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Climate and Forecast Standard Names

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ID Preferred Label Definition Date
acoustic_signal_roundtrip_travel_time_in_sea_water acoustic signal roundtrip travel time in sea water The quantity with standard name acoustic_ signal_ roundtrip_ travel_ time_ in_ sea_ water is the time taken for an acoustic signal to propagate from the emitting instrument to a reflecting surface and back again to the instrument. In the case of an instrument based on the sea floor and measuring the roundtrip time to the sea surface, the data are commonly used as a measure of ocean heat content. 2016-03-08
aerodynamic_particle_diameter aerodynamic particle diameter The diameter of a spherical particle with density 1000 kg m-3 having the same aerodynamic properties as the particles in question. 2015-01-07
aerodynamic_resistance aerodynamic resistance The "aerodynamic_ resistance" is the resistance to mixing through the boundary layer toward the surface by means of the dominant process, turbulent transport. Reference: Wesely, M. L., 1989, doi:10.1016/0004-6981(89)90153-4. 2015-01-07
aerosol_angstrom_exponent aerosol angstrom exponent DEPRECATED 'Aerosol' means the suspended liquid or solid particles in air (except cloud droplets). 2009-07-06
age_of_sea_ice age of sea ice "Age of sea ice" means the length of time elapsed since the ice formed. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
age_of_stratospheric_air age of stratospheric air "Age of stratospheric air" means an estimate of the time since a parcel of stratospheric air was last in contact with the troposphere. 2008-04-15
age_of_surface_snow age of surface snow "Age of surface snow" means the length of time elapsed since the snow accumulated on the earth's surface. Surface snow refers to the snow on the solid ground or on surface ice cover, but excludes, for example, falling snowflakes and snow on plants. 2021-01-18
aggregate_quality_flag aggregate quality flag This flag is an algorithmic combination of the results of all relevant quality tests run for the related ancillary parent data variable. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. The aggregate quality flag provides a summary of all quality tests performed on the data variable (both automated and manual) whether present in the dataset as independent ancillary variables to the parent data variable or not. 2020-03-09
air_density air density 2006-09-26
air_equivalent_potential_temperature air equivalent potential temperature The "equivalent potential temperature" is a thermodynamic quantity, with its natural logarithm proportional to the entropy of moist air, that is conserved in a reversible moist adiabatic process. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_ potential_ temperature. It is the temperature of a parcel of air if all the moisture contained in it were first condensed, releasing latent heat, before moving the parcel dry adiabatically to a standard pressure, typically representative of mean sea level pressure. To specify the standard pressure to which the quantity applies, provide a scalar coordinate variable with standard name reference_ pressure. 2020-03-09
air_equivalent_temperature air equivalent temperature The equivalent temperature is the temperature that an air parcel would have if all water vapor were condensed at contstant pressure and the enthalpy released from the vapor used to heat the air. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_ temperature. It is the isobaric equivalent temperature and not the adiabatic equivalent temperature, also known as pseudoequivalent temperature, which has the standard name air_ pseudo_ equivalent_ temperature. 2020-03-09
air_potential_temperature air potential temperature Air potential temperature is the temperature a parcel of air would have if moved dry adiabatically to a standard pressure, typically representative of mean sea level pressure. To specify the standard pressure to which the quantity applies, provide a scalar coordinate variable with standard name reference_ pressure. 2020-02-03
air_pressure air pressure Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_anomaly air pressure anomaly The term "anomaly" means difference from climatology. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_cloud_base air pressure at cloud base The phrase "cloud_ base" refers to the base of the lowest cloud. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_cloud_top air pressure at cloud top The phrase "cloud_ top" refers to the top of the highest cloud. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_convective_cloud_base air pressure at convective cloud base The phrase "cloud_ base" refers to the base of the lowest cloud. Convective cloud is that produced by the convection schemes in an atmosphere model. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_convective_cloud_top air pressure at convective cloud top The phrase "cloud_ top" refers to the top of the highest cloud. Convective cloud is that produced by the convection schemes in an atmosphere model. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_freezing_level air pressure at freezing level Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pressure_at_mean_sea_level air pressure at mean sea level Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. 2017-07-24
air_pressure_at_sea_level air pressure at sea level DEPRECATED sea_ level means mean sea level, which is close to the geoid in sea areas. Air pressure at sea level is the quantity often abbreviated as MSLP or PMSL. 2017-06-26
air_pressure_at_top_of_atmosphere_model air pressure at top of atmosphere model "Top of atmosphere model" means the upper boundary of the top layer of an atmosphere model. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
air_pseudo_equivalent_potential_temperature air pseudo equivalent potential temperature The pseudoequivalent potential temperature is the temperature a parcel of air would have if it is expanded by a pseudoadiabatic (irreversible moist-adiabatic) process to zero pressure and afterwards compressed by a dry-adiabatic process to a standard pressure, typically representative of mean sea level pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Pseudoequivalent_ potential_ temperature. A pseudoadiabatic process means that the liquid water that condenses is assumed to be removed as soon as it is formed. Reference: AMS Glossary http:/glossary.ametsoc.org/wiki/Pseudoadiabatic_ process. To specify the standard pressure to which the quantity applies, provide a scalar coordinate variable with the standard name reference_ pressure. 2020-03-09
air_pseudo_equivalent_temperature air pseudo equivalent temperature The pseudoequivalent temperature is also known as the adiabatic equivalent temperature. It is the temperature that an air parcel would have after undergoing the following process: dry-adiabatic expansion until saturated; pseudoadiabatic expansion until all moisture is precipitated out; dry-adiabatic compression to the initial pressure. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Equivalent_ temperature. This quantity is distinct from the isobaric equivalent temperature, also known as equivalent temperature, which has the standard name air_ equivalent_ temperature. 2020-03-09
air_temperature air temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. 2006-09-26
air_temperature_anomaly air temperature anomaly 'anomaly' means difference from climatology. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. 2006-09-26
air_temperature_at_cloud_top air temperature at cloud top cloud_ top refers to the top of the highest cloud. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. 2006-09-26
air_temperature_at_effective_cloud_top_defined_by_infrared_radiation air temperature at effective cloud top defined by infrared radiation The "effective cloud top defined by infrared radiation" is (approximately) the geometric height above the surface that is one optical depth at infrared wavelengths (in the region of 11 micrometers) below the cloud top that would be detected by visible and lidar techniques. Reference: Minnis, P. et al 2011 CERES Edition-2 Cloud Property Retrievals Using TRMM VIRS and Terra and Aqua MODIS Data x2014; Part I: Algorithms IEEE Transactions on Geoscience and Remote Sensing, 49(11), 4374-4400. doi: http://dx.doi.org/10.1109/TGRS.2011.2144601. 2016-05-17
air_temperature_lapse_rate air temperature lapse rate Air temperature is the bulk temperature of the air, not the surface (skin) temperature. A lapse rate is the negative derivative of a quantity with respect to increasing height above the surface, or the (positive) derivative with respect to increasing depth. 2006-09-26
air_temperature_threshold air temperature threshold Air temperature is the bulk temperature of the air, not the surface (skin) temperature. Air temperature excess and deficit are calculated relative to the air temperature threshold. 2006-09-26
altimeter_range altimeter range An altimeter operates by sending out a short pulse of radiation and measuring the time required for the pulse to return from the sea surface; this measurement is used to calculate the distance between the instrument and the sea surface. That measurement is called the "altimeter range" and does not include any range corrections. 2008-10-21
altimeter_range_correction_due_to_dry_troposphere altimeter range correction due to dry troposphere The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. To apply the altimeter range correction it must be added to the quantity with standard name altimeter_ range. "Correction_ due_ to_ dry_ troposphere" means a correction for dry gases in the troposphere, i.e. excluding the effect of liquid water. Additional altimeter range corrections are given by the quantities with standard names altimeter_ range_ correction_ due_ to_ wet_ troposphere, altimeter_ range_ correction_ due_ to_ ionosphere, sea_ surface_ height_ correction_ due_ to_ air_ pressure_ at_ low_ frequency and sea_ surface_ height_ correction_ due_ to_ air_ pressure_ and_ wind_ at_ high_ frequency. 2008-10-21
altimeter_range_correction_due_to_ionosphere altimeter range correction due to ionosphere The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. To apply the altimeter range correction it must be added to the quantity with standard name altimeter_ range. "Correction_ due_ to_ ionosphere" means a correction for the atmosphere's electron content in the ionosphere. Additional altimeter range corrections are given by the quantities with standard names altimeter_ range_ correction_ due_ to_ wet_ troposphere, altimeter_ range_ correction_ due_ to_ dry_ troposphere, sea_ surface_ height_ correction_ due_ to_ air_ pressure_ at_ low_ frequency and sea_ surface_ height_ correction_ due_ to_ air_ pressure_ and_ wind_ at_ high_ frequency. 2008-10-21
altimeter_range_correction_due_to_wet_troposphere altimeter range correction due to wet troposphere The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. To apply the altimeter range correction it must be added to the quantity with standard name altimeter_ range. "Correction_ due_ to_ wet_ troposphere" means a correction for the effect of liquid water in the troposphere. Additional altimeter range corrections are given by the quantities with standard names altimeter_ range_ correction_ due_ to_ dry_ troposphere, altimeter_ range_ correction_ due_ to_ ionosphere, sea_ surface_ height_ correction_ due_ to_ air_ pressure_ at_ low_ frequency and sea_ surface_ height_ correction_ due_ to_ air_ pressure_ and_ wind_ at_ high_ frequency. 2008-10-21
altitude altitude Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2006-09-26
altitude_at_top_of_atmosphere_model altitude at top of atmosphere model Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. "Top of atmosphere model" means the upper boundary of the top layer of an atmosphere model. 2017-07-24
altitude_at_top_of_dry_convection altitude at top of dry convection Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2006-09-26
ambient_aerosol_particle_diameter ambient aerosol particle diameter DEPRECATED "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2019-05-14
amplitude_of_global_average_sea_level_change amplitude of global average sea level change Global average sea level change is due to change in volume of the water in the ocean, caused by mass and/or density change, or to change in the volume of the ocean basins, caused by tectonics etc. It is sometimes called "eustatic", which is a term that also has other definitions. It differs from the change in the global average sea surface height relative to the centre of the Earth by the global average vertical movement of the ocean floor. Zero sea level change is an arbitrary level. Amplitude is the magnitude of a wave modelled by a sinusoidal function. A coordinate variable of harmonic_ period should be used to specify the period of the sinusoidal wave. Because global average sea level change quantifies the change in volume of the world ocean, it is not calculated necessarily by considering local changes in mean sea level. 2017-07-24
angle_of_emergence angle of emergence The angle of emergence is that between the direction of a beam of radiation emerging from the surface of a medium and the normal to that surface. 2010-03-11
angle_of_incidence angle of incidence The angle of incidence is that between the direction of approach of a beam of radiation toward a surface and the normal to that surface. 2010-03-11
angle_of_rotation_from_east_to_x angle of rotation from east to x The quantity with standard name angle_ of_ rotation_ from_ east_ to_ x is the angle, anticlockwise reckoned positive, between due East and (dr/di)jk, where r(i,j,k) is the vector 3D position of the point with coordinate indices (i,j,k). It could be used for rotating vector fields between model space and latitude-longitude space. 2008-10-21
angle_of_rotation_from_east_to_y angle of rotation from east to y The quantity with standard name angle_ of_ rotation_ from_ east_ to_ y is the angle, anticlockwise reckoned positive, between due East and (dr/dj)ik, where r(i,j,k) is the vector 3D position of the point with coordinate indices (i,j,k). It could be used for rotating vector fields between model space and latitude-longitude space. 2008-10-21
angle_of_rotation_from_solar_azimuth_to_platform_azimuth angle of rotation from solar azimuth to platform azimuth An angle of rotation is reckoned positive in the anticlockwise direction. The "angle_ of_ rotation_ from_ solar_ azimuth_ to_ platform_ azimuth" is the angle of rotation between the solar azimuth angle and the platform azimuth angle. Solar azimuth angle is the horizontal angle between the line of sight from the observation point to the sun and a reference direction at the observation point, which is often due north. The angle is measured clockwise, starting from the reference direction. Platform azimuth angle is the horizontal angle between the line of sight from the observation point to the platform and a reference direction at the observation point, which is often due north. The angle is measured clockwise, starting from the reference direction. A "platform" is a structure or vehicle that serves as a base for mounting sensors. Platforms include, but are not limited to, satellites, aeroplanes, ships, buoys, instruments, ground stations, and masts. 2018-10-15
angstrom_exponent_of_ambient_aerosol_in_air angstrom exponent of ambient aerosol in air The "Angstrom exponent" appears in the formula relating aerosol optical thickness to the wavelength of incident radiation: T(lambda) = T(lambda0) * [lambda/lambda0] ** (-1 * alpha) where alpha is the Angstrom exponent, lambda is the wavelength of incident radiation, lambda0 is a reference wavelength, T(lambda) and T(lambda0) are the values of aerosol optical thickness at wavelengths lambda and lambda0, respectively. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2015-01-07
apparent_air_temperature apparent air temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The quantity with standard name apparent_ air_ temperature is the perceived air temperature derived from either a combination of temperature and wind (which has standard name wind_ chill_ of_ air_ temperature) or temperature and humidity (which has standard name heat_ index_ of_ air_ temperature) for the hour indicated by the time coordinate variable. When the air temperature falls to 283.15 K or below, wind chill is used for the apparent_ air_ temperature. When the air temperature rises above 299.817 K, the heat index is used for apparent_ air_ temperature. For temperatures above 283.15 and below 299.817K, the apparent_ air_ temperature is the ambient air temperature (which has standard name air_ temperature). References: https://digital.weather.gov/staticpages/definitions.php; WMO codes registry entry http://codes.wmo.int/grib2/codeflag/4.2/_ 0-0-21. 2020-09-14
apparent_oxygen_utilization apparent oxygen utilization Apparent Oxygen Utilization (AOU) is the difference between measured dissolved oxygen concentration in water, and the equilibrium saturation concentration of dissolved oxygen in water with the same physical and chemical properties. Reference: Broecker, W. S. and T. H. Peng (1982), Tracers in the Sea, Lamont-Doherty Earth Observatory, Palisades, N. Y. 2015-07-08
area_fraction area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. To specify which area is quantified by a variable with standard name area_ fraction, provide a coordinate variable or scalar coordinate variable with standard name area_ type. Alternatively, if one is defined, use a more specific standard name of X_ area_ fraction for the fraction of horizontal area occupied by X. 2019-05-14
area_fraction_below_surface area fraction below surface The quantity with standard name area_ fraction_ below_ surface is the fraction of horizontal area where a given isobaric surface is below the (ground or sea) surface. "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The surface called "surface" means the lower boundary of the atmosphere. 2019-05-14
area_fraction_of_day_defined_by_solar_zenith_angle area fraction of day defined by solar zenith angle "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. A coordinate variable of solar_ zenith_ angle indicating the day extent should be specified. Solar zenith angle is the the angle between the line of sight to the sun and the local vertical. 2019-05-14
area_fraction_of_night_defined_by_solar_zenith_angle area fraction of night defined by solar zenith angle "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. A coordinate variable of solar_ zenith_ angle indicating the day extent should be specified. Solar zenith angle is the the angle between the line of sight to the sun and the local vertical. 2019-05-14
area_fraction_of_twilight_defined_by_solar_zenith_angle area fraction of twilight defined by solar zenith angle "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. A coordinate variable of solar_ zenith_ angle indicating the day extent should be specified. Solar zenith angle is the the angle between the line of sight to the sun and the local vertical. 2019-05-14
area_type area type A variable with the standard_ name of area_ type contains either strings which indicate the nature of the surface e.g. land, sea, sea_ ice, or flags which can be translated to strings using flag_ values and flag_ meanings attributes. These strings are standardised. Values must be taken from the area_ type table. 2020-06-22
asymmetry_factor_of_ambient_aerosol_particles asymmetry factor of ambient aerosol particles The asymmetry factor is the angular integral of the aerosol scattering phase function weighted by the cosine of the angle with the incident radiation flux. The asymmetry coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_ wavelength is included to specify the wavelength. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2018-07-03
atmosphere_absolute_vorticity atmosphere absolute vorticity DEPRECATED Absolute vorticity is the sum of relative vorticity and the upward component of vorticity due to the Earth's rotation. 2020-09-14
atmosphere_absorption_optical_thickness_due_to_ambient_aerosol atmosphere absorption optical thickness due to ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_ambient_aerosol_particles atmosphere absorption optical thickness due to ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_black_carbon_ambient_aerosol atmosphere absorption optical thickness due to black carbon ambient aerosol The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2010-03-11
atmosphere_absorption_optical_thickness_due_to_dust_ambient_aerosol atmosphere absorption optical thickness due to dust ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_dust_ambient_aerosol_particles atmosphere absorption optical thickness due to dust ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol atmosphere absorption optical thickness due to particulate organic matter ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol_particles atmosphere absorption optical thickness due to particulate organic matter ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_sea_salt_ambient_aerosol_particles atmosphere absorption optical thickness due to sea salt ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-07-24
atmosphere_absorption_optical_thickness_due_to_seasalt_ambient_aerosol atmosphere absorption optical thickness due to seasalt ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_seasalt_ambient_aerosol_particles atmosphere absorption optical thickness due to seasalt ambient aerosol particles DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_absorption_optical_thickness_due_to_sulfate_ambient_aerosol atmosphere absorption optical thickness due to sulfate ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_absorption_optical_thickness_due_to_sulfate_ambient_aerosol_particles atmosphere absorption optical thickness due to sulfate ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Absorption optical thickness" means that part of the atmosphere optical thickness that is caused by the absorption of incident radiation. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_boundary_layer_thickness atmosphere boundary layer thickness The atmosphere boundary layer thickness is the 'depth' or 'height' of the (atmosphere) planetary boundary layer. 2006-09-26
atmosphere_cloud_condensed_water_content atmosphere cloud condensed water content DEPRECATED 'condensed_ water' means liquid and ice. 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_cloud_ice_content atmosphere cloud ice content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_cloud_liquid_water_content atmosphere cloud liquid water content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_content_of_sulfate_aerosol atmosphere content of sulfate aerosol DEPRECATED 'Content' indicates a quantity per unit area. 'Aerosol' means the suspended liquid or solid particles in air (except cloud droplets). 2009-07-06
atmosphere_convective_available_potential_energy atmosphere convective available potential energy Convective(ly) available potential energy (often abbreviated CAPE) is a stability measure calculated by integrating the positive temperature difference between the surrounding atmosphere and a parcel of air lifted adiabatically from a given starting height to its equilibrium level. A coordinate variable of original_ air_ pressure_ of_ lifted_ parcel should be specified to indicate the starting height of the lifted parcel. CAPE exists under conditions of potential instability, and measures the potential energy per unit mass that would be released by the unstable parcel if it were able to convect upwards to equilibrium. 2013-11-28
atmosphere_convective_available_potential_energy_wrt_surface atmosphere convective available potential energy wrt surface Convective(ly) available potential energy (often abbreviated CAPE) is a stability measure calculated by integrating the positive temperature difference between the surrounding atmosphere and a parcel of air lifted adiabatically from the surface to its equilibrium level. CAPE exists under conditions of potential instability, and measures the potential energy per unit mass that would be released by the unstable parcel if it were able to convect upwards to equilibrium. 2013-11-28
atmosphere_convective_cloud_condensed_water_content atmosphere convective cloud condensed water content DEPRECATED "condensed_ water" means liquid and ice. Convective cloud is that produced by the convection schemes in an atmosphere model. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_convective_cloud_liquid_water_content atmosphere convective cloud liquid water content DEPRECATED Convective cloud is that produced by the convection schemes in an atmosphere model. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_convective_inhibition atmosphere convective inhibition Convective inhibition is the amount of energy per unit mass required to overcome the negatively buoyant energy exerted by the environment on a parcel of air. Convective inhibition is often abbreviated as "CIN" or "CINH". It is calculated by integrating the negative temperature difference between the surrounding atmosphere and a parcel of air lifted adiabatically from a given starting height to its equilibrium level. A coordinate variable of original_ air_ pressure_ of_ lifted_ parcel should be specified to indicate the starting height of the lifted parcel. 2013-11-08
atmosphere_convective_inhibition_wrt_surface atmosphere convective inhibition wrt surface Convective inhibition is the amount of energy per unit mass required to overcome the negatively buoyant energy exerted by the environment on a parcel of air. Convective inhibition is often abbreviated as "CIN" or "CINH". It is calculated by integrating the negative temperature difference between the surrounding atmosphere and a parcel of air lifted adiabatically from the surface to its equilibrium level. 2013-11-08
atmosphere_convective_mass_flux atmosphere convective mass flux DEPRECATED In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts only. 2010-03-11
atmosphere_downdraft_convective_mass_flux atmosphere downdraft convective mass flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts and/or downdrafts only. "Downdraft" means that the flux is positive in the downward direction (negative upward). 2010-03-11
atmosphere_dry_energy_content atmosphere dry energy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Dry energy is the sum of dry static energy and kinetic energy. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
atmosphere_dry_static_energy_content atmosphere dry static energy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
atmosphere_eastward_stress_due_to_gravity_wave_drag atmosphere eastward stress due to gravity wave drag The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Atmosphere_ Xward_ stress is a stress which tends to accelerate the atmosphere in direction X. 2006-09-26
atmosphere_energy_content atmosphere energy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 'Atmosphere energy content' has not yet been precisely defined! Please express your views on this quantity on the CF email list. 2006-09-26
atmosphere_enthalpy_content atmosphere enthalpy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
atmosphere_heat_diffusivity atmosphere heat diffusivity 2006-09-26
atmosphere_helicity atmosphere helicity One-half the scalar product of the air velocity and vorticity vectors, where vorticity refers to the standard name atmosphere_ upward_ absolute_ vorticity. Helicity is proportional to the strength of the flow, the amount of vertical wind shear, and the amount of turning in the flow. 2021-09-20
atmosphere_horizontal_streamfunction atmosphere horizontal streamfunction 'Horizontal' indicates that the streamfunction applies to a horizontal velocity field on a particular vertical level. 2006-09-26
atmosphere_horizontal_velocity_potential atmosphere horizontal velocity potential A velocity is a vector quantity. 'Horizontal' indicates that the velocity potential applies to a horizontal velocity field on a particular vertical level. 2006-09-26
atmosphere_hybrid_height_coordinate atmosphere hybrid height coordinate See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
atmosphere_hybrid_sigma_pressure_coordinate atmosphere hybrid sigma pressure coordinate See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
atmosphere_kinetic_energy_content atmosphere kinetic energy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2006-09-26
atmosphere_layer_thickness_expressed_as_geopotential_height_difference atmosphere layer thickness expressed as geopotential height difference The quantity with standard name atmosphere_ layer_ thickness_ expressed_ as_ geopotential_ height_ difference is the difference of geopotential height between two atmospheric levels. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be "model_ level_ number", but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. "Thickness" means the vertical extent of a layer. Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name "height", which is relative to the surface. 2020-09-14
atmosphere_level_of_free_convection atmosphere level of free convection The level of free convection is the altitude where the temperature of the environment decreases faster than the moist adiabatic lapse rate of a saturated air parcel at the same level. It is calculated by lifting a parcel of air dry adiabatically to the LCL (lifted condensation level), then moist adiabatically until the parcel temperature is equal to the ambient temperature. A coordinate variable of original_ air_ pressure_ of_ lifted_ parcel should be specified to indicate the starting height of the lifted parcel. 2013-11-08
atmosphere_level_of_free_convection_wrt_surface atmosphere level of free convection wrt surface The level of free convection is the altitude where the temperature of the environment decreases faster than the moist adiabatic lapse rate of a saturated air parcel at the same level. It is calculated by lifting a parcel of air dry adiabatically from the surface to the LCL (lifting condensation level), then moist adiabatically until the parcel temperature is equal to the ambient temperature. 2013-11-08
atmosphere_lifting_condensation_level atmosphere lifting condensation level The lifting condensation level is the height at which the relative humidity of an air parcel cooled by dry adiabatic lifting would reach 100%. A coordinate variable of original_ air_ pressure_ of_ lifted_ parcel should be specified to indicate the starting height of the lifted parcel. 2013-11-08
atmosphere_lifting_condensation_level_wrt_surface atmosphere lifting condensation level wrt surface The lifting condensation level is the height at which the relative humidity of an air parcel cooled by dry adiabatic lifting from the surface would reach 100%. 2013-11-08
atmosphere_ln_pressure_coordinate atmosphere ln pressure coordinate "ln_ X" means natural logarithm of X. X must be dimensionless. See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
atmosphere_mass_content_of_acetic_acid atmosphere mass content of acetic acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for acetic_ acid is CH3COOH. The IUPAC name for acetic acid is ethanoic acid. 2009-07-06
atmosphere_mass_content_of_aceto_nitrile atmosphere mass content of aceto nitrile "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for aceto-nitrile is CH3CN. The IUPAC name for aceto-nitrile is ethanenitrile. 2009-07-06
atmosphere_mass_content_of_alkanes atmosphere mass content of alkanes "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Alkanes are saturated hydrocarbons, i.e. they do not contain any chemical double bonds. Alkanes contain only hydrogen and carbon combined in the general proportions C(n)H(2n+2); "alkanes" is the term used in standard names to describe the group of chemical species having this common structure that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for some individual alkane species, e.g., methane and ethane. 2009-07-06
atmosphere_mass_content_of_alkenes atmosphere mass content of alkenes "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Alkenes are unsaturated hydrocarbons as they contain chemical double bonds between adjacent carbon atoms. Alkenes contain only hydrogen and carbon combined in the general proportions C(n)H(2n); "alkenes" is the term used in standard names to describe the group of chemical species having this common structure that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for some individual alkene species, e.g., ethene and propene. 2009-07-06
atmosphere_mass_content_of_alpha_hexachlorocyclohexane atmosphere mass content of alpha hexachlorocyclohexane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for alpha_ hexachlorocyclohexane is C6H6Cl6. 2009-07-06
atmosphere_mass_content_of_alpha_pinene atmosphere mass content of alpha pinene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for alpha_ pinene is C10H16. The IUPAC name for alpha-pinene is (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene. 2009-07-06
atmosphere_mass_content_of_ammonia atmosphere mass content of ammonia "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ammonia is NH3. 2009-07-06
atmosphere_mass_content_of_ammonium_dry_aerosol atmosphere mass content of ammonium dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The chemical formula for ammonium is NH4. 2015-01-07
atmosphere_mass_content_of_ammonium_dry_aerosol_particles atmosphere mass content of ammonium dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for ammonium is NH4. 2015-01-07
atmosphere_mass_content_of_anthropogenic_nmvoc_expressed_as_carbon atmosphere mass content of anthropogenic nmvoc expressed as carbon "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Anthropogenic" means influenced, caused, or created by human activity. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_mass_content_of_aromatic_compounds atmosphere mass content of aromatic compounds "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Aromatic compounds in organic chemistry are compounds that contain at least one benzene ring of six carbon atoms joined by alternating single and double covalent bonds. The simplest aromatic compound is benzene itself. In standard names "aromatic_ compounds" is the term used to describe the group of aromatic chemical species that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for some individual aromatic species, e.g. benzene and xylene. 2009-07-06
atmosphere_mass_content_of_atomic_bromine atmosphere mass content of atomic bromine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical symbol for atomic bromine is Br. 2009-07-06
atmosphere_mass_content_of_atomic_chlorine atmosphere mass content of atomic chlorine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical symbol for atomic chlorine is Cl. 2009-07-06
atmosphere_mass_content_of_atomic_nitrogen atmosphere mass content of atomic nitrogen "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical symbol for atomic nitrogen is N. 2009-07-06
atmosphere_mass_content_of_benzene atmosphere mass content of benzene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for benzene is C6H6. Benzene is the simplest aromatic hydrocarbon and has a ring structure consisting of six carbon atoms joined by alternating single and double chemical bonds. Each carbon atom is additionally bonded to one hydrogen atom. There are standard names that refer to aromatic_ compounds as a group, as well as those for individual species. 2009-07-06
atmosphere_mass_content_of_beta_pinene atmosphere mass content of beta pinene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for beta_ pinene is C10H16. The IUPAC name for beta-pinene is (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane. 2009-07-06
atmosphere_mass_content_of_biogenic_nmvoc_expressed_as_carbon atmosphere mass content of biogenic nmvoc expressed as carbon "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Biogenic" means influenced, caused, or created by natural processes. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_mass_content_of_black_carbon_dry_aerosol atmosphere mass content of black carbon dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. 2015-01-07
atmosphere_mass_content_of_bromine_chloride atmosphere mass content of bromine chloride "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for bromine chloride is BrCl. 2009-07-06
atmosphere_mass_content_of_bromine_monoxide atmosphere mass content of bromine monoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for bromine monoxide is BrO. 2009-07-06
atmosphere_mass_content_of_bromine_nitrate atmosphere mass content of bromine nitrate "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for bromine nitrate is BrONO2. The chemical formula for the nitrate anion is NO3-. 2009-07-06
atmosphere_mass_content_of_brox_expressed_as_bromine atmosphere mass content of brox expressed as bromine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer are used". "Brox" describes a family of chemical species consisting of inorganic bromine compounds with the exception of hydrogen bromide (HBr) and bromine nitrate (BrONO2). The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Brox" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity with a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Inorganic bromine", sometimes referred to as Bry, describes a family of chemical species which result from the degradation of source gases containing bromine (halons, methyl bromide, VSLS) and natural inorganic bromine sources such as volcanoes, sea salt and other aerosols. Standard names that use the term "inorganic_ bromine" are used for quantities that contain all inorganic bromine species including HCl and ClONO2. 2019-03-04
atmosphere_mass_content_of_butane atmosphere mass content of butane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for butane is C4H10. Butane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_carbon_dioxide atmosphere mass content of carbon dioxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for carbon dioxide is CO2. 2009-07-06
atmosphere_mass_content_of_carbon_monoxide atmosphere mass content of carbon monoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula of carbon monoxide is CO. 2009-07-06
atmosphere_mass_content_of_carbon_tetrachloride atmosphere mass content of carbon tetrachloride "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula of carbon tetrachloride is CCl4. The IUPAC name for carbon tetrachloride is tetrachloromethane. 2019-04-08
atmosphere_mass_content_of_cfc11 atmosphere mass content of cfc11 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula of CFC11 is CFCl3. The IUPAC name for CFC11 is trichloro(fluoro)methane. 2019-05-14
atmosphere_mass_content_of_cfc113 atmosphere mass content of cfc113 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula of CFC113 is CCl2FCClF2. The IUPAC name for CFC113 is 1,1,2-trichloro-1,2,2-trifluoroethane. 2019-05-14
atmosphere_mass_content_of_cfc113a atmosphere mass content of cfc113a "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula of CFC113a is CCl3CF3. The IUPAC name for CFC113a is 1,1,1-trichloro-2,2,2-trifluoroethane. 2019-05-14
atmosphere_mass_content_of_cfc114 atmosphere mass content of cfc114 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula of CFC114 is CClF2CClF2. The IUPAC name for CFC114 is 1,2-dichloro-1,1,2,2-tetrafluoroethane. 2019-05-14
atmosphere_mass_content_of_cfc115 atmosphere mass content of cfc115 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula of CFC115 is CClF2CF3. The IUPAC name for CFC115 is 1-chloro-1,1,2,2,2-pentafluoroethane. 2019-05-14
atmosphere_mass_content_of_cfc12 atmosphere mass content of cfc12 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for CFC12 is CF2Cl2. The IUPAC name for CFC12 is dichloro(difluoro)methane. 2019-05-14
atmosphere_mass_content_of_chlorine_dioxide atmosphere mass content of chlorine dioxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for chlorine dioxide is OClO. 2009-07-06
atmosphere_mass_content_of_chlorine_monoxide atmosphere mass content of chlorine monoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for chlorine monoxide is ClO. 2009-07-06
atmosphere_mass_content_of_chlorine_nitrate atmosphere mass content of chlorine nitrate "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for chlorine nitrate is ClONO2. 2009-07-06
atmosphere_mass_content_of_cloud_condensed_water atmosphere mass content of cloud condensed water "condensed_ water" means liquid and ice. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical int egral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_mass_content_of_cloud_ice atmosphere mass content of cloud ice "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_mass_content_of_cloud_liquid_water atmosphere mass content of cloud liquid water "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-02-03
atmosphere_mass_content_of_clox_expressed_as_chlorine atmosphere mass content of clox expressed as chlorine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. "Clox" describes a family of chemical species consisting of inorganic chlorine compounds with the exception of hydrogen chloride (HCl) and chlorine nitrate (ClONO2). The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Clox" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity with a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Inorganic chlorine", sometimes referred to as Cly, describes a family of chemical species which result from the degradation of source gases containing chlorine (CFCs, HCFCs, VSLS) and natural inorganic chlorine sources such as sea salt and other aerosols. Standard names that use the term "inorganic_ chlorine" are used for quantities that contain all inorganic chlorine species including HCl and ClONO2. 2019-03-04
atmosphere_mass_content_of_convective_cloud_condensed_water atmosphere mass content of convective cloud condensed water "condensed_ water" means liquid and ice. Convective cloud is that produced by the convection schemes in an atmosphere model. "Content" indicates a quan tity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-03-23
atmosphere_mass_content_of_convective_cloud_ice atmosphere mass content of convective cloud ice "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Convective cloud is that produced by the convection schemes in an atmosphere model. 2018-04-16
atmosphere_mass_content_of_convective_cloud_liquid_water atmosphere mass content of convective cloud liquid water "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Convective cloud is that produced by the convection schemes in an atmosphere model. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
atmosphere_mass_content_of_dichlorine_peroxide atmosphere mass content of dichlorine peroxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for dichlorine peroxide is Cl2O2. 2009-07-06
atmosphere_mass_content_of_dimethyl_sulfide atmosphere mass content of dimethyl sulfide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for dimethyl sulfide is (CH3)2S. Dimethyl sulfide is sometimes referred to as DMS. 2009-07-06
atmosphere_mass_content_of_dinitrogen_pentoxide atmosphere mass content of dinitrogen pentoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for dinitrogen pentoxide is N2O5. 2009-07-06
atmosphere_mass_content_of_dust_dry_aerosol atmosphere mass content of dust dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. 2015-01-07
atmosphere_mass_content_of_dust_dry_aerosol_particles atmosphere mass content of dust dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. 2015-01-07
atmosphere_mass_content_of_elemental_carbon_dry_aerosol_particles atmosphere mass content of elemental carbon dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. Chemically, "elemental carbon" is the carbonaceous fraction of particulate matter that is thermally stable in an inert atmosphere to high temperatures near 4000K and can only be gasified by oxidation starting at temperatures above 340 C. It is assumed to be inert and non-volatile under atmospheric conditions and insoluble in any solvent (Ogren and Charlson, 1983). 2017-07-24
atmosphere_mass_content_of_ethane atmosphere mass content of ethane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ethane is C2H6. Ethane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_ethanol atmosphere mass content of ethanol "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ethanol is C2H5OH. 2009-07-06
atmosphere_mass_content_of_ethene atmosphere mass content of ethene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ethene is C2H4. Ethene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_ethyne atmosphere mass content of ethyne "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ethyne is HC2H. Ethyne is the IUPAC name for this species, which is also commonly known as acetylene. 2009-07-06
atmosphere_mass_content_of_formaldehyde atmosphere mass content of formaldehyde "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for formaldehyde is CH2O. The IUPAC name for formaldehyde is methanal. 2009-07-06
atmosphere_mass_content_of_formic_acid atmosphere mass content of formic acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for formic acid is HCOOH. The IUPAC name for formic acid is methanoic acid. 2009-07-06
atmosphere_mass_content_of_gaseous_divalent_mercury atmosphere mass content of gaseous divalent mercury "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Divalent mercury" means all compounds in which the mercury has two binding sites to other ion(s) in a salt or to other atom(s) in a molecule. 2009-07-06
atmosphere_mass_content_of_gaseous_elemental_mercury atmosphere mass content of gaseous elemental mercury "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical symbol for mercury is Hg. 2009-07-06
atmosphere_mass_content_of_graupel atmosphere mass content of graupel "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except when the size convention that hail must have a diameter greater than 5 mm is adopted. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. There are also separate standard names for hail. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. 2018-05-15
atmosphere_mass_content_of_graupel_and_hail atmosphere mass content of graupel and hail "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except when the size convention that hail must have a diameter greater than 5 mm is adopted. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. For models that do distinguish between them, separate standard names for hail and graupel are available. 2018-05-15
atmosphere_mass_content_of_hail atmosphere mass content of hail "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. For diameters of less than 5 mm standard names for "graupel" should be used. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. 2018-05-15
atmosphere_mass_content_of_halon1202 atmosphere mass content of halon1202 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula for Halon1202 is CBr2F2. The IUPAC name for Halon1202 is dibromo(difluoro)methane. 2019-05-14
atmosphere_mass_content_of_halon1211 atmosphere mass content of halon1211 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula for Halon1211 is CBrClF2. The IUPAC name for Halon1211 is bromo-chloro-difluoromethane. 2019-05-14
atmosphere_mass_content_of_halon1301 atmosphere mass content of halon1301 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer are used". The mass is the total mass of the molecules. The chemical formula for Halon1301 is CBrF3. The IUPAC name for Halon1301 is bromo(trifluoro)methane. 2019-05-14
atmosphere_mass_content_of_halon2402 atmosphere mass content of halon2402 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The mass is the total mass of the molecules. The chemical formula for Halon2402 is C2Br2F4. The IUPAC name for Halon2402 is 1,2-dibromo-1,1,2,2-tetrafluoroethane. 2019-05-14
atmosphere_mass_content_of_hcc140a atmosphere mass content of hcc140a "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for HCC140a, also called methyl chloroform, is CH3CCl3. The IUPAC name for HCC140a is 1,1,1-trichloroethane. 2019-05-14
atmosphere_mass_content_of_hcfc141b atmosphere mass content of hcfc141b "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for HCFC141b is CH3CCl2F. The IUPAC name for HCFC141b is 1,1-dichloro-1-fluoroethane. 2018-12-17
atmosphere_mass_content_of_hcfc142b atmosphere mass content of hcfc142b "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for HCFC142b is CH3CClF2. The IUPAC name for HCFC142b is 1-chloro-1,1-difluoroethane. 2018-12-17
atmosphere_mass_content_of_hcfc22 atmosphere mass content of hcfc22 "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer are used". The mass is the total mass of the molecules. The chemical formula for HCFC22 is CHClF2. The IUPAC name for HCFC22 is chloro(difluoro)methane. 2019-05-14
atmosphere_mass_content_of_hexachlorobiphenyl atmosphere mass content of hexachlorobiphenyl "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the molecules. The chemical formula for hexachlorobiphenyl is C12H4Cl6. The structure of this species consists of two linked benzene rings, each of which is additionally bonded to three chlorine atoms. 2018-12-17
atmosphere_mass_content_of_hox_expressed_as_hydrogen atmosphere mass content of hox expressed as hydrogen "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "HOx" means a combination of two radical species containing hydrogen and oxygen: OH and HO2. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2018-12-17
atmosphere_mass_content_of_hydrogen_bromide atmosphere mass content of hydrogen bromide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the molecules. The chemical formula for hydrogen bromide is HBr. 2018-12-17
atmosphere_mass_content_of_hydrogen_chloride atmosphere mass content of hydrogen chloride "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for hydrogen chloride is HCl. 2018-12-17
atmosphere_mass_content_of_hydrogen_cyanide atmosphere mass content of hydrogen cyanide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the molecules. The chemical formula for hydrogen cyanide is HCN. 2019-02-04
atmosphere_mass_content_of_hydrogen_peroxide atmosphere mass content of hydrogen peroxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the molecules. The chemical formula for hydrogen peroxide is H2O2. 2019-02-04
atmosphere_mass_content_of_hydroperoxyl_radical atmosphere mass content of hydroperoxyl radical "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for the hydroperoxyl radical is HO2. In chemistry, a 'radical' is a highly reactive, and therefore short lived, species. 2018-12-17
atmosphere_mass_content_of_hydroxyl_radical atmosphere mass content of hydroxyl radical "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for the hydroxyl radical is OH. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_mass_content_of_hypobromous_acid atmosphere mass content of hypobromous acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for hypobromous acid is HOBr. 2019-02-04
atmosphere_mass_content_of_hypochlorous_acid atmosphere mass content of hypochlorous acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for hypochlorous acid is HOCl. 2019-02-04
atmosphere_mass_content_of_inorganic_bromine atmosphere mass content of inorganic bromine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. "Inorganic bromine", sometimes referred to as Bry, describes a family of chemical species which result from the degradation of source gases containing bromine (halons, methyl bromide, VSLS) and natural inorganic bromine sources such as volcanoes, sea salt and other aerosols. "Inorganic bromine" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names that use the term "brox" are used for quantities that contain all inorganic bromine species except HBr and BrONO2. 2019-03-04
atmosphere_mass_content_of_inorganic_chlorine atmosphere mass content of inorganic chlorine "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. "Inorganic chlorine", sometimes referred to as Cly, describes a family of chemical species which result from the degradation of source gases containing chlorine (CFCs, HCFCs, VSLS) and natural inorganic chlorine sources such as sea salt and other aerosols. "Inorganic chlorine" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names that use the term "clox" are used for quantities that contain all inorganic chlorine species except HCl and ClONO2. 2019-03-04
atmosphere_mass_content_of_isoprene atmosphere mass content of isoprene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for isoprene is CH2=C(CH3)CH=CH2. The IUPAC name for isoprene is 2-methylbuta-1,3-diene. Isoprene is a member of the group of hydrocarbons known as terpenes. There are standard names for the terpene group as well as for some of the individual species. 2019-05-14
atmosphere_mass_content_of_limonene atmosphere mass content of limonene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for limonene is C10H16. The IUPAC name for limonene is 1-methyl-4-prop-1-en-2-ylcyclohexene. Limonene is a member of the group of hydrocarbons known as terpenes. There are standard names for the terpene group as well as for some of the individual species. 2019-05-14
atmosphere_mass_content_of_liquid_precipitation atmosphere mass content of liquid precipitation "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. "Liquid_ precipitation" includes both "rain" and "drizzle". "Rain" means drops of water falling through the atmosphere that have a diameter greater than 0.5 mm. "Drizzle" means drops of water falling through the atmosphere that have a diameter typically in the range 0.2-0.5 mm. 2020-03-09
atmosphere_mass_content_of_mercury_dry_aerosol atmosphere mass content of mercury dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. 2015-01-07
atmosphere_mass_content_of_mercury_dry_aerosol_particles atmosphere mass content of mercury dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. 2015-01-07
atmosphere_mass_content_of_methane atmosphere mass content of methane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_methanol atmosphere mass content of methanol "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for methanol is CH3OH. 2009-07-06
atmosphere_mass_content_of_methyl_bromide atmosphere mass content of methyl bromide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for methyl bromide is CH3Br. The IUPAC name for methyl bromide is bromomethane. 2009-07-06
atmosphere_mass_content_of_methyl_chloride atmosphere mass content of methyl chloride "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for methyl chloride is CH3Cl. The IUPAC name for methyl chloride is chloromethane. 2009-07-06
atmosphere_mass_content_of_methyl_hydroperoxide atmosphere mass content of methyl hydroperoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for methyl hydroperoxide is CH3OOH. 2009-07-06
atmosphere_mass_content_of_methyl_peroxy_radical atmosphere mass content of methyl peroxy radical "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for methyl_ peroxy_ radical is CH3O2. In chemistry, a "radical"is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_mass_content_of_molecular_hydrogen atmosphere mass content of molecular hydrogen "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for molecular hydrogen is H2. 2009-07-06
atmosphere_mass_content_of_nitrate_dry_aerosol atmosphere mass content of nitrate dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The chemical formula for the nitrate anion is NO3-. 2015-01-07
atmosphere_mass_content_of_nitrate_dry_aerosol_particles atmosphere mass content of nitrate dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the nitrate anion is NO3-. 2015-01-07
atmosphere_mass_content_of_nitrate_radical atmosphere mass content of nitrate radical "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for nitrate is NO3. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_mass_content_of_nitric_acid atmosphere mass content of nitric acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for nitric acid is HNO3. 2009-07-06
atmosphere_mass_content_of_nitric_acid_trihydrate_ambient_aerosol atmosphere mass content of nitric acid trihydrate ambient aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. Nitric acid trihydrate, sometimes referred to as NAT, is a stable crystalline substance consisting of three molecules of water to one molecule of nitric acid. The chemical formula for nitric acid is HNO3. 2015-01-07
atmosphere_mass_content_of_nitric_acid_trihydrate_ambient_aerosol_particles atmosphere mass content of nitric acid trihydrate ambient aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". Nitric acid trihydrate, sometimes referred to as NAT, is a stable crystalline substance consisting of three molecules of water to one molecule of nitric acid. The chemical formula for nitric acid is HNO3. 2015-01-07
atmosphere_mass_content_of_nitrogen_dioxide atmosphere mass content of nitrogen dioxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for nitrogen dioxide is NO2. 2009-07-06
atmosphere_mass_content_of_nitrogen_monoxide atmosphere mass content of nitrogen monoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for nitrogen monoxide is NO. 2009-07-06
atmosphere_mass_content_of_nitrous_acid atmosphere mass content of nitrous acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for nitrous acid is HNO2. 2009-07-06
atmosphere_mass_content_of_nitrous_oxide atmosphere mass content of nitrous oxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for nitrous oxide is N2O. 2009-07-06
atmosphere_mass_content_of_nmvoc_expressed_as_carbon atmosphere mass content of nmvoc expressed as carbon "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_mass_content_of_nox_expressed_as_nitrogen atmosphere mass content of nox expressed as nitrogen "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Nox" means a combination of two radical species containing nitrogen and oxygen: NO+NO2. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2009-07-06
atmosphere_mass_content_of_noy_expressed_as_nitrogen atmosphere mass content of noy expressed as nitrogen "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Noy" describes a family of chemical species. The family usually includes atomic nitrogen (N), nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), peroxynitric acid (HNO4), bromine nitrate (BrONO2) , chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)). The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2009-07-06
atmosphere_mass_content_of_oxygenated_hydrocarbons atmosphere mass content of oxygenated hydrocarbons "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Oxygenated" means containing oxygen. "Hydrocarbon" means a compound containing hydrogen and carbon. 2009-07-06
atmosphere_mass_content_of_ozone atmosphere mass content of ozone "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for ozone is O3. 2009-07-06
atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol atmosphere mass content of particulate organic matter dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The term "particulate_ organic_ matter_ dry_ aerosol" means all particulate organic matter dry aerosol except black carbon. It is the sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_particulate_organic_matter_dry_aerosol_particles atmosphere mass content of particulate organic matter dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. The term "particulate_ organic_ matter_ dry_ aerosol" means all particulate organic matter dry aerosol except elemental carbon. It is the sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_peroxy_radicals atmosphere mass content of peroxy radicals "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The term "peroxy_ radicals" means all organic and inorganic peroxy radicals. This includes HO2 and all organic peroxy radicals, sometimes referred to as RO2. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_mass_content_of_peroxyacetyl_nitrate atmosphere mass content of peroxyacetyl nitrate "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for peroxyacetyl nitrate, sometimes referred to as PAN, is CH3COO2NO2. The IUPAC name for peroxyacetyl_ nitrate is nitroethaneperoxoate. 2009-07-06
atmosphere_mass_content_of_peroxynitric_acid atmosphere mass content of peroxynitric acid "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for peroxynitric acid, sometimes referred to as PNA, is HO2NO2. 2009-07-06
atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol atmosphere mass content of primary particulate organic matter dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Primary particulate organic matter " means all organic matter emitted directly to the atmosphere as particles except black carbon. The sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol is particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_primary_particulate_organic_matter_dry_aerosol_particles atmosphere mass content of primary particulate organic matter dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol particles" means aerosol particles without any water uptake. "Primary particulate organic matter " means all organic matter emitted directly to the atmosphere as particles except elemental carbon. The sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol is particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_propane atmosphere mass content of propane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for propane is C3H8. Propane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_propene atmosphere mass content of propene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for propene is C3H6. Propene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species. 2009-07-06
atmosphere_mass_content_of_radon atmosphere mass content of radon "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical symbol for radon is Rn. 2009-07-06
atmosphere_mass_content_of_sea_salt_dry_aerosol_particles atmosphere mass content of sea salt dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. 2017-06-26
atmosphere_mass_content_of_sea_salt_dry_aerosol_particles_expressed_as_cations atmosphere mass content of sea salt dry aerosol particles expressed as cations "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The phrase "sea_ salt_ cation" is the term used in standard names to describe collectively the group of cationic species that occur in sea salt. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Sea salt cations are mainly sodium (Na+), but also include potassium (K+), magnesium (Mg2+), calcium (Ca2+) and rarer cations. Where possible, the data variable should be accompanied by a complete description of the ions represented, for example, by using a comment attribute. 2017-06-26
atmosphere_mass_content_of_seasalt_dry_aerosol atmosphere mass content of seasalt dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. 2015-01-07
atmosphere_mass_content_of_seasalt_dry_aerosol_particles atmosphere mass content of seasalt dry aerosol particles DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. 2017-06-26
atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol atmosphere mass content of secondary particulate organic matter dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. "Secondary particulate organic matter " means particulate organic matter formed within the atmosphere from gaseous precursors. The sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol is particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_secondary_particulate_organic_matter_dry_aerosol_particles atmosphere mass content of secondary particulate organic matter dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. "Secondary particulate organic matter " means particulate organic matter formed within the atmosphere from gaseous precursors. The sum of primary_ particulate_ organic_ matter_ dry_ aerosol and secondary_ particulate_ organic_ matter_ dry_ aerosol is particulate_ organic_ matter_ dry_ aerosol. 2015-01-07
atmosphere_mass_content_of_snow atmosphere mass content of snow "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. "Snow" refers to the precipitating part of snow in the atmosphere - the cloud snow content is excluded. 2020-02-03
atmosphere_mass_content_of_sulfate atmosphere mass content of sulfate "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-07-21
atmosphere_mass_content_of_sulfate_ambient_aerosol atmosphere mass content of sulfate ambient aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. 2015-01-07
atmosphere_mass_content_of_sulfate_ambient_aerosol_particles atmosphere mass content of sulfate ambient aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2015-01-07
atmosphere_mass_content_of_sulfate_dry_aerosol atmosphere mass content of sulfate dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The chemical formula for the sulfate anion is SO4(2-). 2015-01-07
atmosphere_mass_content_of_sulfate_dry_aerosol_expressed_as_sulfur atmosphere mass content of sulfate dry aerosol expressed as sulfur DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The chemical formula for the sulfate anion is SO4(2-). 2015-01-07
atmosphere_mass_content_of_sulfate_dry_aerosol_particles atmosphere mass content of sulfate dry aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The mass is the total mass of the particles. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). 2015-01-07
atmosphere_mass_content_of_sulfate_dry_aerosol_particles_expressed_as_sulfur atmosphere mass content of sulfate dry aerosol particles expressed as sulfur "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The chemical formula for the sulfate anion is SO4(2-). 2015-01-07
atmosphere_mass_content_of_sulfate_expressed_as_sulfur_dry_aerosol atmosphere mass content of sulfate expressed as sulfur dry aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2010-07-26
atmosphere_mass_content_of_sulfur_dioxide atmosphere mass content of sulfur dioxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for sulfur dioxide is SO2. 2009-07-06
atmosphere_mass_content_of_terpenes atmosphere mass content of terpenes "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Terpenes are hydrocarbons, that is, they contain only hydrogen and carbon combined in the general proportions (C5H8)n where n is an integer greater than on equal to one. The term "terpenes" is used in standard names to describe the group of chemical species having this common structure that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names exist for some individual terpene species, e.g., isoprene and limonene. 2009-07-06
atmosphere_mass_content_of_toluene atmosphere mass content of toluene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The chemical formula for toluene is C6H5CH3. Toluene has the same structure as benzene, except that one of the hydrogen atoms is replaced by a methyl group. The IUPAC name for toluene is methylbenzene. 2019-03-04
atmosphere_mass_content_of_volcanic_ash atmosphere mass content of volcanic ash "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Volcanic_ ash" means the fine-grained products of explosive volcanic eruptions, such as minerals or crystals, older fragmented rock (e.g. andesite), and glass. Particles within a volcanic ash cloud have diameters less than 2 mm. "Volcanic_ ash" does not include non-volcanic dust. 2013-11-08
atmosphere_mass_content_of_water atmosphere mass content of water "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Water" means water in all phases. 2011-07-21
atmosphere_mass_content_of_water_in_ambient_aerosol atmosphere mass content of water in ambient aerosol DEPRECATED "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Water" means water in all phases. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. 2015-01-07
atmosphere_mass_content_of_water_in_ambient_aerosol_particles atmosphere mass content of water in ambient aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Water" means water in all phases. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2015-01-07
atmosphere_mass_content_of_water_vapor atmosphere mass content of water vapor "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated. 2011-07-21
atmosphere_mass_content_of_xylene atmosphere mass content of xylene "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The chemical formula for xylene is C6H4C2H6. In chemistry, xylene is a generic term for a group of three isomers of dimethylbenzene. The IUPAC names for the isomers are 1,2-dimethylbenzene, 1,3-dimethylbenzene and 1,4-dimethylbenzene. Xylene is an aromatic hydrocarbon. There are standard names that refer to aromatic_ compounds as a group, as well as those for individual species. 2009-07-06
atmosphere_mass_of_air_per_unit_area atmosphere mass of air per unit area "Mass_ of_ air" means the mass due solely to the gaseous constituents of the atmosphere. The standard name for the mass including precipitation and aerosol particles is atmosphere_ mass_ per_ unit_ area. 2007-05-15
atmosphere_mass_of_carbon_dioxide atmosphere mass of carbon dioxide The chemical formula for carbon dioxide is CO2. 2010-10-11
atmosphere_mass_per_unit_area atmosphere mass per unit area 'X_ area' means the horizontal area occupied by X within the grid cell. 2006-09-26
atmosphere_mole_content_of_carbon_monoxide atmosphere mole content of carbon monoxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The construction "atmosphere_ mole_ content_ of_ X" means the vertically integrated number of moles of X above a unit area. The chemical formula of carbon monoxide is CO. 2018-05-15
atmosphere_mole_content_of_methane atmosphere mole content of methane "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The construction "atmosphere_ mole_ content_ of_ X" means the vertically integrated number of moles of X above a unit area. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2018-05-15
atmosphere_mole_content_of_nitrogen_dioxide atmosphere mole content of nitrogen dioxide "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The construction "atmosphere_ mole_ content_ of_ X" means the vertically integrated number of moles of X above a unit area. The chemical formula for nitrogen dioxide is NO2. 2018-05-15
atmosphere_mole_content_of_ozone atmosphere mole content of ozone "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The construction "atmosphere_ mole_ content_ of_ X" means the vertically integrated number of moles of X above a unit area. The chemical formula for ozone is O3. atmosphere_ mole_ content_ of_ ozone is usually measured in Dobson Units which are equivalent to 446.2 micromoles m-2. N.B. Data variables containing column content of ozone can be given the standard name of either equivalent_ thickness_ at_ stp_ of_ atmosphere_ ozone_ content or atmosphere_ mole_ content_ of_ ozone.The latter name is recommended for consistency with mole content names for chemical species other than ozone. 2013-01-11
atmosphere_mole_content_of_water_vapor atmosphere mole content of water vapor "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including "content_ of_ atmosphere_ layer" are used. The construction "atmosphere_ mole_ content_ of_ X" means the vertically integrated number of moles of X above a unit area. Atmosphere water vapor content is sometimes referred to as "precipitable water", although this term does not imply the water could all be precipitated. The chemical formula for water is H2O. 2018-05-15
atmosphere_moles_of_acetic_acid atmosphere moles of acetic acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for acetic_ acid is CH3COOH. The IUPAC name for acetic acid is ethanoic acid. 2009-07-06
atmosphere_moles_of_aceto_nitrile atmosphere moles of aceto nitrile The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for aceto-nitrile is CH3CN. The IUPAC name for aceto-nitrile is ethanenitrile. 2009-07-06
atmosphere_moles_of_alpha_hexachlorocyclohexane atmosphere moles of alpha hexachlorocyclohexane The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for alpha_ hexachlorocyclohexane is C6H6Cl6. 2009-07-06
atmosphere_moles_of_alpha_pinene atmosphere moles of alpha pinene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for alpha_ pinene is C10H16. The IUPAC name for alpha-pinene is (1S,5S)-2,6,6-trimethylbicyclo[3.1.1]hept-2-ene. 2009-07-06
atmosphere_moles_of_ammonia atmosphere moles of ammonia The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ammonia is NH3. 2009-07-06
atmosphere_moles_of_anthropogenic_nmvoc_expressed_as_carbon atmosphere moles of anthropogenic nmvoc expressed as carbon The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Anthropogenic" means influenced, caused, or created by human activity. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_moles_of_atomic_bromine atmosphere moles of atomic bromine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for atomic bromine is Br. 2009-07-06
atmosphere_moles_of_atomic_chlorine atmosphere moles of atomic chlorine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for atomic chlorine is Cl. 2009-07-06
atmosphere_moles_of_atomic_nitrogen atmosphere moles of atomic nitrogen The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for atomic nitrogen is N. 2009-07-06
atmosphere_moles_of_benzene atmosphere moles of benzene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for benzene is C6H6. Benzene is the simplest aromatic hydrocarbon and has a ring structure consisting of six carbon atoms joined by alternating single and double chemical bonds. Each carbon atom is additionally bonded to one hydrogen atom. There are standard names that refer to aromatic_ compounds as a group, as well as those for individual species. 2009-07-06
atmosphere_moles_of_beta_pinene atmosphere moles of beta pinene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for beta_ pinene is C10H16. The IUPAC name for beta-pinene is (1S,5S)-6,6-dimethyl-2-methylenebicyclo[3.1.1]heptane. 2009-07-06
atmosphere_moles_of_biogenic_nmvoc_expressed_as_carbon atmosphere moles of biogenic nmvoc expressed as carbon The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Biogenic" means influenced, caused, or created by natural processes. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_moles_of_bromine_chloride atmosphere moles of bromine chloride The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for bromine chloride is BrCl. 2009-07-06
atmosphere_moles_of_bromine_monoxide atmosphere moles of bromine monoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for bromine monoxide is BrO. 2009-07-06
atmosphere_moles_of_bromine_nitrate atmosphere moles of bromine nitrate The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for bromine nitrate is BrONO2. 2009-07-06
atmosphere_moles_of_brox_expressed_as_bromine atmosphere moles of brox expressed as bromine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Brox" describes a family of chemical species consisting of inorganic bromine compounds with the exception of hydrogen bromide (HBr) and bromine nitrate (BrONO2). The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Brox" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity with a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Inorganic bromine", sometimes referred to as Bry, describes a family of chemical species which result from the degradation of source gases containing bromine (halons, methyl bromide, VSLS) and natural inorganic bromine sources such as volcanoes, sea salt and other aerosols. Standard names that use the term "inorganic_ bromine" are used for quantities that contain all inorganic bromine species including HCl and ClONO2. 2019-03-04
atmosphere_moles_of_butane atmosphere moles of butane The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for butane is C4H10. Butane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_carbon_dioxide atmosphere moles of carbon dioxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for carbon dioxide is CO2. 2009-07-06
atmosphere_moles_of_carbon_monoxide atmosphere moles of carbon monoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of carbon monoxide is CO. 2009-07-06
atmosphere_moles_of_carbon_tetrachloride atmosphere moles of carbon tetrachloride The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for carbon tetrachloride is CCl4. The IUPAC name for carbon tetrachloride is tetrachloromethane. 2019-04-08
atmosphere_moles_of_cfc11 atmosphere moles of cfc11 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of CFC11 is CFCl3. The IUPAC name for CFC11 is trichloro(fluoro)methane. 2019-05-14
atmosphere_moles_of_cfc113 atmosphere moles of cfc113 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of CFC113 is CCl2FCClF2. The IUPAC name for CFC113 is 1,1,2-trichloro-1,2,2-trifluoroethane. 2019-05-14
atmosphere_moles_of_cfc113a atmosphere moles of cfc113a The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of CFC113a is CCl3CF3. The IUPAC name for CFC113a is 1,1,1-trichloro-2,2,2-trifluoroethane. 2019-05-14
atmosphere_moles_of_cfc114 atmosphere moles of cfc114 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of CFC114 is CClF2CClF2. The IUPAC name for CFC114 is 1,2-dichloro-1,1,2,2-tetrafluoroethane. 2019-05-14
atmosphere_moles_of_cfc115 atmosphere moles of cfc115 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula of CFC115 is CClF2CF3. The IUPAC name for CFC115 is 1-chloro-1,1,2,2,2-pentafluoroethane. 2019-05-14
atmosphere_moles_of_cfc12 atmosphere moles of cfc12 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for CFC12 is CF2Cl2. The IUPAC name for CFC12 is dichloro(difluoro)methane. 2019-05-14
atmosphere_moles_of_chlorine_dioxide atmosphere moles of chlorine dioxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for chlorine dioxide is OClO. 2009-07-06
atmosphere_moles_of_chlorine_monoxide atmosphere moles of chlorine monoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for chlorine monoxide is ClO. 2009-07-06
atmosphere_moles_of_chlorine_nitrate atmosphere moles of chlorine nitrate The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for chlorine nitrate is ClONO2. 2009-07-06
atmosphere_moles_of_clox_expressed_as_chlorine atmosphere moles of clox expressed as chlorine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Clox" describes a family of chemical species consisting of inorganic chlorine compounds with the exception of hydrogen chloride (HCl) and chlorine nitrate (ClONO2). The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "Clox" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity with a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. "Inorganic chlorine", sometimes referred to as Cly, describes a family of chemical species which result from the degradation of source gases containing chlorine (CFCs, HCFCs, VSLS) and natural inorganic chlorine sources such as sea salt and other aerosols. Standard names that use the term "inorganic_ chlorine" are used for quantities that contain all inorganic chlorine species including HCl and ClONO2. 2019-03-04
atmosphere_moles_of_dichlorine_peroxide atmosphere moles of dichlorine peroxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for dichlorine peroxide is Cl2O2. 2009-07-06
atmosphere_moles_of_dimethyl_sulfide atmosphere moles of dimethyl sulfide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for dimethyl sulfide is (CH3)2S. Dimethyl sulfide is sometimes referred to as DMS. 2009-07-06
atmosphere_moles_of_dinitrogen_pentoxide atmosphere moles of dinitrogen pentoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for dinitrogen pentoxide is N2O5. 2009-07-06
atmosphere_moles_of_ethane atmosphere moles of ethane The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ethane is C2H6. Ethane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_ethanol atmosphere moles of ethanol The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ethanol is C2H5OH. 2009-07-06
atmosphere_moles_of_ethene atmosphere moles of ethene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ethene is C2H4. Ethene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_ethyne atmosphere moles of ethyne The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ethyne is HC2H. Ethyne is the IUPAC name for this species, which is also commonly known as acetylene. 2009-07-06
atmosphere_moles_of_formaldehyde atmosphere moles of formaldehyde The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for formaldehyde is CH2O. The IUPAC name for formaldehyde is methanal. 2009-07-06
atmosphere_moles_of_formic_acid atmosphere moles of formic acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for formic acid is HCOOH. The IUPAC name for formic acid is methanoic acid. 2009-07-06
atmosphere_moles_of_gaseous_divalent_mercury atmosphere moles of gaseous divalent mercury The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Divalent mercury" means all compounds in which the mercury has two binding sites to other ion(s) in a salt or to other atom(s) in a molecule. 2009-07-06
atmosphere_moles_of_gaseous_elemental_mercury atmosphere moles of gaseous elemental mercury The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for mercury is Hg. 2009-07-06
atmosphere_moles_of_halon1202 atmosphere moles of halon1202 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for Halon1202 is CBr2F2. The IUPAC name for Halon1202 is dibromo(difluoro)methane. 2019-05-14
atmosphere_moles_of_halon1211 atmosphere moles of halon1211 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for Halon1211 is CBrClF2. The IUPAC name for Halon1211 is bromo-chloro-difluoromethane. 2019-05-14
atmosphere_moles_of_halon1301 atmosphere moles of halon1301 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for Halon1301 is CBrF3. The IUPAC name for Halon1301 is bromo(trifluoro)methane. 2019-05-14
atmosphere_moles_of_halon2402 atmosphere moles of halon2402 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for Halon2402 is C2Br2F4. The IUPAC name for Halon2402 is 1,2-dibromo-1,1,2,2-tetrafluoroethane. 2019-05-14
atmosphere_moles_of_hcc140a atmosphere moles of hcc140a The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for HCC140a, also called methyl chloroform, is CH3CCl3. The IUPAC name for HCC140a is 1,1,1-trichloroethane. 2019-05-14
atmosphere_moles_of_hcfc141b atmosphere moles of hcfc141b The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for HCFC141b is CH3CCl2F. The IUPAC name for HCFC141b is 1,1-dichloro-1-fluoroethane. 2009-07-06
atmosphere_moles_of_hcfc142b atmosphere moles of hcfc142b The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for HCFC142b is CH3CClF2. The IUPAC name for HCFC142b is 1-chloro-1,1-difluoroethane. 2009-07-06
atmosphere_moles_of_hcfc22 atmosphere moles of hcfc22 The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for HCFC22 is CHClF2. The IUPAC name for HCFC22 is chloro(difluoro)methane. 2019-05-14
atmosphere_moles_of_hexachlorobiphenyl atmosphere moles of hexachlorobiphenyl The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hexachlorobiphenyl is C12H4Cl6. This structure of this species consists of two linked benzene rings, each of which is additionally bonded to three chlorine atoms. 2009-07-06
atmosphere_moles_of_hox_expressed_as_hydrogen atmosphere moles of hox expressed as hydrogen The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "HOx" means a combination of two radical species containing hydrogen and oxygen: OH and HO2. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2009-07-06
atmosphere_moles_of_hydrogen_bromide atmosphere moles of hydrogen bromide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hydrogen bromide is HBr. 2009-07-06
atmosphere_moles_of_hydrogen_chloride atmosphere moles of hydrogen chloride The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hydrogen chloride is HCl. 2009-07-06
atmosphere_moles_of_hydrogen_cyanide atmosphere moles of hydrogen cyanide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hydrogen cyanide is HCN. 2009-07-06
atmosphere_moles_of_hydrogen_peroxide atmosphere moles of hydrogen peroxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hydrogen peroxide is H2O2. 2009-07-06
atmosphere_moles_of_hydroperoxyl_radical atmosphere moles of hydroperoxyl radical The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for the hydroperoxyl radical is HO2. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_moles_of_hydroxyl_radical atmosphere moles of hydroxyl radical The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for the hydroxyl radical is OH. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_moles_of_hypobromous_acid atmosphere moles of hypobromous acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hypobromous acid is HOBr. 2009-07-06
atmosphere_moles_of_hypochlorous_acid atmosphere moles of hypochlorous acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for hypochlorous acid is HOCl. 2009-07-06
atmosphere_moles_of_inorganic_bromine atmosphere moles of inorganic bromine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Inorganic bromine", sometimes referred to as Bry, describes a family of chemical species which result from the degradation of source gases containing bromine (halons, methyl bromide, VSLS) and natural inorganic bromine sources such as volcanoes, sea salt and other aerosols. "Inorganic bromine" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names that use the term "brox" are used for quantities that contain all inorganic bromine species except HBr and BrONO2. 2019-03-04
atmosphere_moles_of_inorganic_chlorine atmosphere moles of inorganic chlorine The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Inorganic chlorine", sometimes referred to as Cly, describes a family of chemical species which result from the degradation of source gases containing chlorine (CFCs, HCFCs, VSLS) and natural inorganic chlorine sources such as sea salt and other aerosols. "Inorganic chlorine" is the term used in standard names for all species belonging to the family that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. Standard names that use the term "clox" are used for quantities that contain all inorganic chlorine species except HCl and ClONO2. 2019-03-04
atmosphere_moles_of_isoprene atmosphere moles of isoprene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for isoprene is CH2=C(CH3)CH=CH2. The IUPAC name for isoprene is 2-methylbuta-1,3-diene. Isoprene is a member of the group of hydrocarbons known as terpenes. There are standard names for the terpene group as well as for some of the individual species. 2019-05-14
atmosphere_moles_of_limonene atmosphere moles of limonene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for limonene is C10H16. The IUPAC name for limonene is 1-methyl-4-prop-1-en-2-ylcyclohexene. Limonene is a member of the group of hydrocarbons known as terpenes. There are standard names for the terpene group as well as for some of the individual species. 2019-05-14
atmosphere_moles_of_methane atmosphere moles of methane The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methane is CH4. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_methanol atmosphere moles of methanol The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methanol is CH3OH. 2009-07-06
atmosphere_moles_of_methyl_bromide atmosphere moles of methyl bromide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methyl bromide is CH3Br. The IUPAC name for methyl bromide is bromomethane. 2009-07-06
atmosphere_moles_of_methyl_chloride atmosphere moles of methyl chloride The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methyl chloride is CH3Cl. The IUPAC name for methyl chloride is chloromethane. 2009-07-06
atmosphere_moles_of_methyl_hydroperoxide atmosphere moles of methyl hydroperoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methyl hydroperoxide is CH3OOH. 2009-07-06
atmosphere_moles_of_methyl_peroxy_radical atmosphere moles of methyl peroxy radical The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for methyl_ peroxy_ radical is CH3O2. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_moles_of_molecular_hydrogen atmosphere moles of molecular hydrogen The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for molecular hydrogen is H2. 2009-07-06
atmosphere_moles_of_nitrate_radical atmosphere moles of nitrate radical The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. In chemistry, a "radical" is a highly reactive, and therefore short lived, species. 2019-03-04
atmosphere_moles_of_nitric_acid atmosphere moles of nitric acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitric acid is HNO3. 2009-07-06
atmosphere_moles_of_nitric_acid_trihydrate_ambient_aerosol atmosphere moles of nitric acid trihydrate ambient aerosol DEPRECATED "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitric acid is HNO3. Nitric acid trihydrate, sometimes referred to as NAT, is a stable crystalline substance consisting of three molecules of water to one molecule of nitric acid. 2015-01-07
atmosphere_moles_of_nitric_acid_trihydrate_ambient_aerosol_particles atmosphere moles of nitric acid trihydrate ambient aerosol particles The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The chemical formula for nitric acid is HNO3. Nitric acid trihydrate, sometimes referred to as NAT, is a stable crystalline substance consisting of three molecules of water to one molecule of nitric acid. 2015-01-07
atmosphere_moles_of_nitrogen_dioxide atmosphere moles of nitrogen dioxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitrogen dioxide is NO2. 2009-07-06
atmosphere_moles_of_nitrogen_monoxide atmosphere moles of nitrogen monoxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitrogen monoxide is NO. 2009-07-06
atmosphere_moles_of_nitrous_acid atmosphere moles of nitrous acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitrous acid is HNO2. 2009-07-06
atmosphere_moles_of_nitrous_oxide atmosphere moles of nitrous oxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for nitrous oxide is N2O. 2009-07-06
atmosphere_moles_of_nmvoc_expressed_as_carbon atmosphere moles of nmvoc expressed as carbon The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "nmvoc" means non methane volatile organic compounds; "nmvoc" is the term used in standard names to describe the group of chemical species having this classification that are represented within a given model. The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2015-01-07
atmosphere_moles_of_nox_expressed_as_nitrogen atmosphere moles of nox expressed as nitrogen The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Nox" means a combination of two radical species containing nitrogen and oxygen: NO+NO2. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2009-07-06
atmosphere_moles_of_noy_expressed_as_nitrogen atmosphere moles of noy expressed as nitrogen The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. "Noy" describes a family of chemical species. The family usually includes atomic nitrogen (N), nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen pentoxide (N2O5), nitric acid (HNO3), peroxynitric acid (HNO4), bromine nitrate (BrONO2) , chlorine nitrate (ClONO2) and organic nitrates (most notably peroxyacetyl nitrate, sometimes referred to as PAN, (CH3COO2NO2)). The list of individual species that are included in a quantity having a group chemical standard name can vary between models. Where possible, the data variable should be accompanied by a complete description of the species represented, for example, by using a comment attribute. The phrase 'expressed_ as' is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2009-07-06
atmosphere_moles_of_ozone atmosphere moles of ozone The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for ozone is O3. 2009-07-06
atmosphere_moles_of_peroxyacetyl_nitrate atmosphere moles of peroxyacetyl nitrate The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for peroxyacetyl nitrate, sometimes referred to as PAN, is CH3COO2NO2. The IUPAC name for peroxyacetyl_ nitrate is nitroethaneperoxoate. 2009-07-06
atmosphere_moles_of_peroxynitric_acid atmosphere moles of peroxynitric acid The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for peroxynitric acid, sometimes referred to as PNA, is HO2NO2. 2009-07-06
atmosphere_moles_of_propane atmosphere moles of propane The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for propane is C3H8. Propane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_propene atmosphere moles of propene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for propene is C3H6. Propene is a member of the group of hydrocarbons known as alkenes. There are standard names for the alkene group as well as for some of the individual species. 2009-07-06
atmosphere_moles_of_radon atmosphere moles of radon The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for radon is Rn. 2009-07-06
atmosphere_moles_of_sulfur_dioxide atmosphere moles of sulfur dioxide The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for sulfur dioxide is SO2. 2009-07-06
atmosphere_moles_of_toluene atmosphere moles of toluene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for toluene is C6H5CH3. Toluene has the same structure as benzene, except that one of the hydrogen atoms is replaced by a methyl group. The IUPAC name for toluene is methylbenzene. 2019-03-04
atmosphere_moles_of_water_vapor atmosphere moles of water vapor The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. 2009-07-06
atmosphere_moles_of_xylene atmosphere moles of xylene The construction "atmosphere_ moles_ of_ X" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical formula for xylene is C6H4C2H6. In chemistry, xylene is a generic term for a group of three isomers of dimethylbenzene. The IUPAC names for the isomers are 1,2-dimethylbenzene, 1,3-dimethylbenzene and 1,4-dimethylbenzene. Xylene is an aromatic hydrocarbon. There are standard names that refer to aromatic_ compounds as a group, as well as those for individual species. 2009-07-06
atmosphere_momentum_diffusivity atmosphere momentum diffusivity 2006-09-26
atmosphere_net_rate_of_absorption_of_longwave_energy atmosphere net rate of absorption of longwave energy 'longwave' means longwave radiation. Net absorbed radiation is the difference between absorbed and emitted radiation. 2006-09-26
atmosphere_net_rate_of_absorption_of_shortwave_energy atmosphere net rate of absorption of shortwave energy 'shortwave' means shortwave radiation. Net absorbed radiation is the difference between absorbed and emitted radiation. 2006-09-26
atmosphere_net_upward_convective_mass_flux atmosphere net upward convective mass flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. Net upward convective mass flux is the difference between the updraft mass flux and the downdraft mass flux. "Upward" indicates a vector component which is positive when directed upward (negative downward). For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts and/or downdrafts only. 2010-03-11
atmosphere_net_upward_deep_convective_mass_flux atmosphere net upward deep convective mass flux "Upward" indicates a vector component which is positive when directed upward (negative downward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts and/or downdrafts only. Net upward convective mass flux is the difference between the updraft mass flux and the downdraft mass flux. 2010-03-11
atmosphere_net_upward_shallow_convective_mass_flux atmosphere net upward shallow convective mass flux "Upward" indicates a vector component which is positive when directed upward (negative downward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts and/or downdrafts only. Net upward convective mass flux is the difference between the updraft mass flux and the downdraft mass flux. 2010-03-11
atmosphere_northward_stress_due_to_gravity_wave_drag atmosphere northward stress due to gravity wave drag The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'Northward' indicates a vector component which is positive when directed northward (negative southward). Atmosphere_ Xward_ stress is a stress which tends to accelerate the atmosphere in direction X. 2006-09-26
atmosphere_number_content_of_aerosol_particles atmosphere number content of aerosol particles "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. 2015-01-07
atmosphere_number_content_of_cloud_droplets atmosphere number content of cloud droplets "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2009-07-06
atmosphere_number_content_of_ice_crystals atmosphere number content of ice crystals "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2009-07-06
atmosphere_optical_thickness_due_to_aerosol atmosphere optical thickness due to aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. 'Aerosol' means the suspended liquid or solid particles in air (except cloud droplets). 2010-03-11
atmosphere_optical_thickness_due_to_ambient_aerosol atmosphere optical thickness due to ambient aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_ambient_aerosol_particles atmosphere optical thickness due to ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_ammonium_ambient_aerosol_particles atmosphere optical thickness due to ammonium ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_ thickness") on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_black_carbon_ambient_aerosol atmosphere optical thickness due to black carbon ambient aerosol The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. Black carbon aerosol is composed of elemental carbon. It is strongly light absorbing. 2007-11-21
atmosphere_optical_thickness_due_to_cloud atmosphere optical thickness due to cloud The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Cloud" means the component of extinction owing to the presence of liquid or ice water particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-07-08
atmosphere_optical_thickness_due_to_convective_cloud atmosphere optical thickness due to convective cloud The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. Convective cloud is that produced by the convection schemes in an atmosphere model. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2009-07-06
atmosphere_optical_thickness_due_to_dust_ambient_aerosol atmosphere optical thickness due to dust ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. 2015-01-07
atmosphere_optical_thickness_due_to_dust_ambient_aerosol_particles atmosphere optical thickness due to dust ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_dust_dry_aerosol atmosphere optical thickness due to dust dry aerosol DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_ thickness") on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). Aerosol takes up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the aerosol. "Dry aerosol" means aerosol without water. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_dust_dry_aerosol_particles atmosphere optical thickness due to dust dry aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_ thickness") on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. Aerosol particles take up ambient water (a process known as hygroscopic growth) depending on the relative humidity and the composition of the particles. "Dry aerosol particles" means aerosol particles without any water uptake. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_nitrate_ambient_aerosol_particles atmosphere optical thickness due to nitrate ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_ thickness") on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The chemical formula for the nitrate anion is NO3-. 2015-01-07
atmosphere_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol atmosphere optical thickness due to particulate organic matter ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. 2015-01-07
atmosphere_optical_thickness_due_to_particulate_organic_matter_ambient_aerosol_particles atmosphere optical thickness due to particulate organic matter ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_pm10_ambient_aerosol atmosphere optical thickness due to pm10 ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. "Pm10 aerosol" is an air pollutant with an aerodynamic diameter of less than or equal to 10 micrometers. 2015-01-07
atmosphere_optical_thickness_due_to_pm10_ambient_aerosol_particles atmosphere optical thickness due to pm10 ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. "Pm10 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 10 micrometers. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_optical_thickness_due_to_pm1_ambient_aerosol atmosphere optical thickness due to pm1 ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. "Pm1 aerosol" is an air pollutant with an aerodynamic diameter of less than or equal to 1 micrometer. 2015-01-07
atmosphere_optical_thickness_due_to_pm1_ambient_aerosol_particles atmosphere optical thickness due to pm1 ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. "Pm1 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 1 micrometer. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_optical_thickness_due_to_pm2p5_ambient_aerosol atmosphere optical thickness due to pm2p5 ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. "Pm2p5 aerosol" is an air pollutant with an aerodynamic diameter of less than or equal to 2.5 micrometers. 2015-01-07
atmosphere_optical_thickness_due_to_pm2p5_ambient_aerosol_particles atmosphere optical thickness due to pm2p5 ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. "Pm2p5 aerosol" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_optical_thickness_due_to_sea_salt_ambient_aerosol_particles atmosphere optical thickness due to sea salt ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_optical_thickness_due_to_seasalt_ambient_aerosol atmosphere optical thickness due to seasalt ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "Ambient aerosol" is aerosol that has taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the aerosol. 2015-01-07
atmosphere_optical_thickness_due_to_seasalt_ambient_aerosol_particles atmosphere optical thickness due to seasalt ambient aerosol particles DEPRECATED The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2017-06-26
atmosphere_optical_thickness_due_to_stratiform_cloud atmosphere optical thickness due to stratiform cloud The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2009-07-06
atmosphere_optical_thickness_due_to_sulfate_ambient_aerosol_particles atmosphere optical thickness due to sulfate ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-"optical_ thickness") on traversing the path. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_optical_thickness_due_to_water_in_ambient_aerosol atmosphere optical thickness due to water in ambient aerosol DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. "Aerosol" means the suspended liquid or solid particles in air (except cloud droplets). "atmosphere_ optical_ thickness_ due_ to_ water_ in_ ambient_ aerosol" refers to the optical thickness due to the water that is associated with aerosol particles due to hygroscopic growth in ambient air, affecting the particle's radius and refractive index. It corresponds to the difference between the total dry aerosol optical thickness and the total ambient aerosol optical thickness. 2015-01-07
atmosphere_optical_thickness_due_to_water_in_ambient_aerosol_particles atmosphere optical thickness due to water in ambient aerosol particles The optical thickness is the integral along the path of radiation of a volume scattering/absorption/attenuation coefficient. The radiative flux is reduced by a factor exp(-optical_ thickness) on traversing the path. The atmosphere optical thickness applies to radiation passing through the entire atmosphere. A coordinate variable of radiation_ wavelength or radiation_ frequency can be specified to indicate that the optical thickness applies at specific wavelengths or frequencies. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. "atmosphere_ optical_ thickness_ due_ to_ water_ in_ ambient_ aerosol" refers to the optical thickness due to the water that is associated with aerosol particles due to hygroscopic growth in ambient air, affecting the radius and refractive index of the particle. It corresponds to the difference between the total dry aerosol optical thickness and the total ambient aerosol optical thickness. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2015-01-07
atmosphere_potential_energy_content atmosphere potential energy content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Potential energy is the sum of the gravitational potential energy relative to the geoid and the centripetal potential energy. (The geopotential is the specific potential energy.) 2006-09-26
atmosphere_relative_vorticity atmosphere relative vorticity DEPRECATED Relative vorticity is the upward component of the vorticity vector i.e. the component which arises from horizontal velocity. 2020-09-14
atmosphere_sigma_coordinate atmosphere sigma coordinate See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
atmosphere_sleve_coordinate atmosphere sleve coordinate See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
atmosphere_so4_content atmosphere so4 content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2006-09-26
atmosphere_specific_convective_available_potential_energy atmosphere specific convective available potential energy DEPRECATED 'specific' means per unit mass. Potential energy is the sum of the gravitational potential energy relative to the geoid and the centripetal potential energy. (The geopotential is the specific potential energy.) Convective(ly) available potential energy is often abbreviated as 'CAPE'. 2013-11-28
atmosphere_stability_k_index atmosphere stability k index The atmosphere_ stability_ k_ index is an index that indicates the potential of severe convection and is often referred to a simply the k index. The index is derived from the difference in air temperature between 850 and 500 hPa, the dew point temperature at 850 hPa, and the difference between the air temperature and the dew point temperature at 700 hPa. 2013-11-08
atmosphere_stability_showalter_index atmosphere stability showalter index The atmosphere_ stability_ showalter_ index is an index used to determine convective and thunderstorm potential and is often referred to as simply the showalter index. The index is defined as the temperature difference between a parcel of air lifted from 850 to 500 hPa (wet adiabatically) and the ambient air temperature at 500 hPa. 2013-11-08
atmosphere_stability_total_totals_index atmosphere stability total totals index The atmosphere_ stability_ total_ totals_ index indicates the likelihood of severe convection and is often referred to as simply the total totals index. The index is derived from the difference in air temperature between 850 and 500 hPa (the vertical totals) and the difference between the dew point temperature at 850 hPa and the air temperature at 500 hPa (the cross totals). The vertical totals and cross totals are summed to obtain the index. 2013-11-08
atmosphere_sulfate_content atmosphere sulfate content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 2011-07-21
atmosphere_surface_drag_coefficient atmosphere surface drag coefficient DEPRECATED The surface called 'surface' means the lower boundary of the atmosphere. 2006-09-26
atmosphere_surface_drag_coefficient_of_heat atmosphere surface drag coefficient of heat DEPRECATED The surface called 'surface' means the lower boundary of the atmosphere. 2006-09-26
atmosphere_surface_drag_coefficient_of_momentum atmosphere surface drag coefficient of momentum DEPRECATED The surface called 'surface' means the lower boundary of the atmosphere. 2006-09-26
atmosphere_transformed_eulerian_mean_meridional_overturning_mass_streamfunction atmosphere transformed eulerian mean meridional overturning mass streamfunction The "meridional mass streamfunction" is a streamfunction of the zonally averaged mass transport in the meridional plane. The "Transformed Eulerian Mean" refers to a formulation of the mean equations which incorporates some eddy terms into the definition of the mean, described in Andrews et al (1987): Middle Atmospheric Dynamics. Academic Press. 2018-05-29
atmosphere_updraft_convective_mass_flux atmosphere updraft convective mass flux The atmosphere convective mass flux is the vertical transport of mass for a field of cumulus clouds or thermals, given by the product of air density and vertical velocity. For an area-average, cell_ methods should specify whether the average is over all the area or the area of updrafts and/or downdrafts only. "Updraft" means that the flux is positive in the updward direction (negative downward). upward. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2019-03-04
atmosphere_upward_absolute_vorticity atmosphere upward absolute vorticity Atmosphere upward absolute vorticity is the sum of the atmosphere upward relative vorticity and the vertical component of vorticity due to the Earth’s rotation. In contrast, the quantity with standard name atmosphere_ upward_ relative_ vorticity excludes the Earth's rotation. Vorticity is a vector quantity. "Upward" indicates a vector component which is positive when directed upward (negative downward). A positive value of atmosphere_ upward_ absolute_ vorticity indicates anticlockwise rotation when viewed from above. 2020-09-14
atmosphere_upward_relative_vorticity atmosphere upward relative vorticity Atmosphere upward relative vorticity is the vertical component of the 3D air vorticity vector. The vertical component arises from horizontal velocity only. "Relative" in this context means the vorticity of the air relative to the rotating solid earth reference frame, i.e. excluding the Earth's own rotation. In contrast, the quantity with standard name atmosphere_ upward_ absolute_ vorticity includes the Earth's rotation. "Upward" indicates a vector component which is positive when directed upward (negative downward). A positive value of atmosphere_ upward_ relative_ vorticity indicates anticlockwise rotation when viewed from above. 2020-09-14
atmosphere_water_content atmosphere water content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. 'Water' means water in all phases. 2011-07-21
atmosphere_water_vapor_content atmosphere water vapor content DEPRECATED 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. Atmosphere water vapor content is sometimes referred to as 'precipitable water', although this term does not imply the water could all be precipitated. 2011-03-23
atmosphere_x_relative_vorticity atmosphere x relative vorticity Atmosphere x relative vorticity is the x component of the 3D air vorticity vector. "Relative" in this context means the vorticity of the air relative to the rotating solid earth reference frame, i.e. excluding the Earth's own rotation. "x" indicates a vector component along the grid x-axis, positive with increasing x. A positive value of atmosphere_ x_ relative_ vorticity indicates anticlockwise rotation when viewed by an observer looking along the axis in the direction of decreasing x, i.e. consistent with the "right hand screw" rule. 2020-10-13
atmosphere_y_relative_vorticity atmosphere y relative vorticity Atmosphere y relative vorticity is the y component of the 3D air vorticity vector. "Relative" in this context means the vorticity of the air relative to the rotating solid earth reference frame, i.e. excluding the Earth's own rotation. "y" indicates a vector component along the grid y-axis, positive with increasing y. A positive value of atmosphere_ y_ relative_ vorticity indicates anticlockwise rotation when viewed by an observer looking along the axis in the direction of decreasing y, i.e. consistent with the "right hand screw" rule. 2020-10-13
attenuated_signal_test_quality_flag attenuated signal test quality flag A quality flag that reports the result of the Attenuated Signal test, which checks for near-flat-line conditions using a range or standard deviation. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. There are standard names for other specific quality tests which take the form of X_ quality_ flag. Quality information that does not match any of the specific quantities should be given the more general standard name of quality_ flag. 2020-03-09
automated_tropical_cyclone_forecasting_system_storm_identifier automated tropical cyclone forecasting system storm identifier The Automated Tropical Cyclone Forecasting System (ATCF) storm identifier is an 8 character string which identifies a tropical cyclone. The storm identifier has the form BBCCYYYY, where BB is the ocean basin, specifically: AL - North Atlantic basin, north of the Equator; SL - South Atlantic basin, south of the Equator; EP - North East Pacific basin, eastward of 140 degrees west longitude; CP - North Central Pacific basin, between the dateline and 140 degrees west longitude; WP - North West Pacific basin, westward of the dateline; IO - North Indian Ocean basin, north of the Equator between 40 and 100 degrees east longitude; SH - South Pacific Ocean basin and South Indian Ocean basin. CC is the cyclone number. Numbers 01 through 49 are reserved for tropical and subtropical cyclones. A cyclone number is assigned to each tropical or subtropical cyclone in each basin as it develops. Numbers are assigned in chronological order. Numbers 50 through 79 are reserved for internal use by operational forecast centers. Numbers 80 through 89 are reserved for training, exercises and testing. Numbers 90 through 99 are reserved for tropical disturbances having the potential to become tropical or subtropical cyclones. The 90's are assigned sequentially and reused throughout the calendar year. YYYY is the four-digit year. This is calendar year for the northern hemisphere. For the southern hemisphere, the year begins July 1, with calendar year plus one. Reference: Miller, R.J., Schrader, A.J., Sampson, C.R., & Tsui, T.L. (1990), The Automated Tropical Cyclone Forecasting System (ATCF), American Meteorological Society Computer Techniques, 5, 653 - 660. 2017-07-24
backscattering_ratio backscattering ratio DEPRECATED Scattering of radiation is its deflection from its incident path without loss of energy. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_ angle exceeding pi/2 radians. A scattering_ angle should not be specified with this quantity. "Backscattering ratio" is the ratio of the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air to the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air_ assuming_ no_ aerosol_ or_ cloud. 2019-05-14
backscattering_ratio_in_air backscattering ratio in air Scattering of radiation is its deflection from its incident path without loss of energy. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_ angle exceeding pi/2 radians. A scattering_ angle should not be specified with this quantity. "Backscattering ratio" is the ratio of the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air to the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air_ assuming_ no_ aerosol_ or_ cloud. 2019-05-14
baroclinic_eastward_sea_water_velocity baroclinic eastward sea water velocity A velocity is a vector quantity. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). 2006-09-26
baroclinic_northward_sea_water_velocity baroclinic northward sea water velocity A velocity is a vector quantity. 'Northward' indicates a vector component which is positive when directed northward (negative southward). 2006-09-26
barometric_altitude barometric altitude Barometric altitude is the altitude determined by a pressure measurement which is converted to altitude through interpolation of the International Standard Atmosphere (ICAO, 1976). A mean sea level pressure of 1013.25 hPa is used for the surface pressure. 2013-11-08
barotropic_eastward_sea_water_velocity barotropic eastward sea water velocity A velocity is a vector quantity. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). 2006-09-26
barotropic_northward_sea_water_velocity barotropic northward sea water velocity A velocity is a vector quantity. 'Northward' indicates a vector component which is positive when directed northward (negative southward). 2006-09-26
barotropic_sea_water_x_velocity barotropic sea water x velocity A velocity is a vector quantity. "x" indicates a vector component along the grid x-axis, positive with increasing x. 2013-01-11
barotropic_sea_water_y_velocity barotropic sea water y velocity A velocity is a vector quantity. "y" indicates a vector component along the grid y-axis, positive with increasing y. 2013-01-11
basal_downward_heat_flux_in_sea_ice basal downward heat flux in sea ice "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
baseflow_amount baseflow amount Baseflow is subsurface runoff which takes place below the level of the water table. Runoff is the liquid water which drains from land. "Amount" means mass per unit area. 2007-02-20
beam_consistency_indicator_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water beam consistency indicator from multibeam acoustic doppler velocity profiler in sea water The "beam_ consistency_ indicator" is the degree to which the received acoustic pulse is correlated with the transmitted pulse. It is used as a data quality assessment parameter in ADCP (acoustic doppler current profiler) instruments and is frequently referred to as "correlation magnitude". Convention is that the larger the value, the higher the signal to noise ratio and therefore the better the quality of the current vector measurements; the maximum value of the indicator is 128. 2021-09-20
beaufort_wind_force beaufort wind force "Beaufort wind force" is an index assigned on the Beaufort wind force scale and relates a qualitative description of the degree of disturbance or destruction caused by wind to the speed of the wind. The Beaufort wind scale varies between 0 (qualitatively described as calm, smoke rises vertically, sea appears glassy) (wind speeds in the range 0 - 0.2 m s-1) and 12 (hurricane, wave heights in excess of 14 m) (wind speeds in excess of 32.7 m s-1). 2007-11-21
bedrock_altitude bedrock altitude Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 'Bedrock' is the solid Earth surface beneath land ice, ocean water or soil. 2020-06-22
bedrock_altitude_change_due_to_isostatic_adjustment bedrock altitude change due to isostatic adjustment The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 'Bedrock' is the solid Earth surface beneath land ice, ocean water or soil. The zero of bedrock altitude change is arbitrary. Isostatic adjustment is the vertical movement of the lithosphere due to changing surface ice and water loads. 2020-06-22
biological_taxon_identifier biological taxon identifier DEPRECATED "Biological taxon" is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy. The quantity with standard name biological_ taxon_ identifier is the machine-readable identifier for the taxon registration in either WoRMS (the AphiaID) or ITIS (the taxonomic serial number or TSN), including namespace. The namespace strings are 'aphia:' or 'tsn:'. For example, Calanus finmarchicus is encoded as either 'aphia:104464' or 'tsn:85272'. For the marine domain WoRMS has more complete coverage and so aphia Ids are preferred. See Section 6.1.2 of the CF convention (version 1.8 or later) for information about biological taxon auxiliary coordinate variables. 2021-09-20
biological_taxon_lsid biological taxon lsid "Biological taxon" is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy. The quantity with standard name biological_ taxon_ lsid is the machine-readable identifier based on a taxon registration system using the syntax convention specified for the Life Science Identifier (LSID) - urn:lsid:<Authority>:<Namespace>:<ObjectID>[:<Version>]. This includes the reference classification in the element and these are restricted by the LSID governance. It is strongly recommended in CF that the authority chosen is World Register of Marine Species (WoRMS) for oceanographic data and Integrated Taxonomic Information System (ITIS) for freshwater and terrestrial data. See Section 6.1.2 of the CF convention (version 1.8 or later) for information about biological taxon auxiliary coordinate variables. This identifier is a narrower equivalent to the scientificNameID field in the Darwin Core Standard. 2021-09-20
biological_taxon_name biological taxon name "Biological taxon" is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy. The quantity with standard name biological_ taxon_ name is the human-readable label for the taxon such as Calanus finmarchicus. The label should be registered in either WoRMS (http://www.marinespecies.org) or ITIS (https://www.itis.gov/) and spelled exactly as registered. See Section 6.1.2 of the CF convention (version 1.8 or later) for information about biological taxon auxiliary coordinate variables. 2020-02-03
bioluminescent_photon_rate_in_sea_water bioluminescent photon rate in sea water 2006-09-26
biomass_burning_carbon_flux biomass burning carbon flux 'Biomass burning carbon' refers to the rate at which biomass is burned by forest fires etc., expressed as the mass of carbon which it contains. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
bolus_eastward_sea_water_velocity bolus eastward sea water velocity DEPRECATED Bolus velocity in an ocean model means the velocity due to a scheme representing eddy-induced effects which are not resolved on the grid scale of the model. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). 2017-11-28
bolus_northward_sea_water_velocity bolus northward sea water velocity DEPRECATED Bolus velocity in an ocean model means the velocity due to a scheme representing eddy-induced effects which are not resolved on the grid scale of the model. "Northward" indicates a vector component which is positive when directed northward (negative southward). 2017-11-28
bolus_sea_water_x_velocity bolus sea water x velocity DEPRECATED A velocity is a vector quantity. "x" indicates a vector component along the grid x-axis, positive with increasing x. Bolus velocity in an ocean model means the velocity due to a scheme representing eddy-induced effects which are not resolved on the grid scale of the model. bolus_ sea_ water_ x_ velocity is used in some parameterisations of lateral diffusion in the ocean. 2017-11-28
bolus_sea_water_y_velocity bolus sea water y velocity DEPRECATED A velocity is a vector quantity. "y" indicates a vector component along the grid y-axis, positive with increasing y. Bolus velocity in an ocean model means the velocity due to a scheme representing eddy-induced effects which are not resolved on the grid scale of the model. bolus_ sea_ water_ y_ velocity is used in some parameterisations of lateral diffusion in the ocean. 2017-11-28
bolus_upward_sea_water_velocity bolus upward sea water velocity DEPRECATED Bolus velocity in an ocean model means the velocity due to a scheme representing eddy-induced effects which are not resolved on the grid scale of the model. "Upward" indicates a vector component which is positive when directed upward (negative downward). 2017-11-28
brightness_temperature brightness temperature The brightness temperature of a body is the temperature of a black body which radiates the same power per unit solid angle per unit area. 2006-09-26
brightness_temperature_anomaly brightness temperature anomaly The brightness temperature of a body is the temperature of a black body which radiates the same power per unit solid angle per unit area. "anomaly" means difference from climatology. 2012-04-27
brightness_temperature_at_cloud_top brightness temperature at cloud top cloud_ top refers to the top of the highest cloud. brightness_ temperature of a body is the temperature of a black body which radiates the same power per unit solid angle per unit area. A coordinate variable of radiation_ wavelength, sensor_ band_ central_ radiation_ wavelength, or radiation_ frequency may be specified to indicate that the brightness temperature applies at specific wavelengths or frequencies. 2015-07-08
brunt_vaisala_frequency_in_air brunt vaisala frequency in air Frequency is the number of oscillations of a wave per unit time. Brunt-Vaisala frequency is also sometimes called "buoyancy frequency" and is a measure of the vertical stratification of the medium. 2017-05-22
burned_area burned area "X_ area" means the horizontal area occupied by X within the grid cell. The extent of an individual grid cell is defined by the horizontal coordinates and any associated coordinate bounds or by a string valued auxiliary coordinate variable with a standard name of "region". "Burned area" means the area of burned vegetation. 2017-02-21
burned_area_fraction burned area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Burned area" means the area of burned vegetation. 2019-05-14
canopy_albedo canopy albedo Albedo is the ratio of outgoing to incoming shortwave irradiance, where 'shortwave irradiance' means that both the incoming and outgoing radiation are integrated across the solar spectrum. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. The surface_ albedo restricted to the area type "vegetation" is related to canopy_ albedo, but the former also includes the effect of radiation being reflected from the ground underneath the canopy. 2018-07-03
canopy_and_surface_water_amount canopy and surface water amount The surface called "surface" means the lower boundary of the atmosphere. "Amount" means mass per unit area. "Water" means water in all phases, including frozen i.e. ice and snow. "Canopy and surface water" means the sum of water on the ground and on the canopy. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-10
canopy_height canopy height Height is the vertical distance above the surface. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-10
canopy_resistance_to_ozone_dry_deposition canopy resistance to ozone dry deposition "Canopy" means the plant or vegetation canopy. The "canopy_ resistance" is the resistance of a compound to uptake by the vegetation canopy. It varies both with the surface and the chemical species or physical state (gas or particle). Canopy resistance is a function of the canopy stomatal resistance (Rstom), the canopy cuticle resistance (Rcuticle), and the soil resistance (Rsoil). In the case of ozone the uptake by the cuticle is small compared to the uptake through the stomata. Reference: Kerstiens and Lendzian, 1989. This means that the cuticle transfer pathway can be neglected in model parameterizations. Reference: Ganzeveld and Jos Lelieveld , 1995, doi/10.1029/95JD02266/pdf. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. The chemical formula for ozone is O3. The IUPAC name for ozone is trioxygen. 2018-07-10
canopy_snow_amount canopy snow amount "Amount" means mass per unit area. The phrase "canopy_ snow" means snow lying on the canopy. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-03
canopy_temperature canopy temperature "Canopy temperature" is the bulk temperature of the canopy, not the surface (skin) temperature. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-10
canopy_throughfall_flux canopy throughfall flux "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. "Throughfall" is the part of the precipitation flux that reaches the ground directly through the vegetative canopy, through spaces in the canopy, and as drip from the leaves, twigs, and stems (but not including snowmelt). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2019-02-04
canopy_water_amount canopy water amount "Amount" means mass per unit area. "Water" means water in all phases, including frozen i.e. ice and snow. The canopy water is the water on the canopy. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-10
carbon_content_of_forestry_and_agricultural_products carbon content of forestry and agricultural products DEPRECATED "Content" indicates a quantity per unit area. Examples of "forestry and agricultural products" are paper, cardboard, furniture, timber for construction, biofuels and food for both humans and livestock. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. 2018-04-16
carbon_content_of_products_of_anthropogenic_land_use_change carbon content of products of anthropogenic land use change DEPRECATED "Content" indicates a quantity per unit area. "products_ of_ anthropogenic_ land_ use_ change" means the different end-products of wood which has been removed from the environment by deforestation. Examples are paper, cardboard, furniture and timber for construction. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic" means influenced, caused, or created by human activity. 2016-12-13
carbon_mass_content_of_forestry_and_agricultural_products carbon mass content of forestry and agricultural products "Content" indicates a quantity per unit area. Examples of "forestry and agricultural products" are paper, cardboard, furniture, timber for construction, biofuels and food for both humans and livestock. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. 2018-04-16
carbon_mass_flux_into_forestry_and_agricultural_products_due_to_anthropogenic_land_use_or_land_cover_change carbon mass flux into forestry and agricultural products due to anthropogenic land use or land cover change In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Anthropogenic" means influenced, caused, or created by human activity. Examples of "forestry and agricultural products" are paper, cardboard, furniture, timber for construction, biofuels and food for both humans and livestock. Models that simulate land use changes have one or more pools of carbon that represent these products in order to conserve carbon and allow its eventual release into the atmosphere, for example, when the products decompose in landfill sites. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. 2016-12-13
carbon_mass_flux_into_litter_and_soil_due_to_anthropogenic_land_use_or_land_cover_change carbon mass flux into litter and soil due to anthropogenic land use or land cover change In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Anthropogenic" means influenced, caused, or created by human activity. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. 2019-05-14
carbon_mass_flux_into_soil_and_litter_due_to_anthropogenic_land_use_or_land_cover_change carbon mass flux into soil and litter due to anthropogenic land use or land cover change DEPRECATED In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Anthropogenic" means influenced, caused, or created by human activity. "Anthropogenic land use change" means human changes to land, excluding forest regrowth. It includes fires ignited by humans for the purpose of land use change and the processes of eventual disposal and decomposition of wood products such as paper, cardboard, furniture and timber for construction. 2019-05-14
carbon_mass_flux_into_soil_from_litter carbon mass flux into soil from litter In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Litter" is dead plant material in or above the soil. 2010-10-11
carbon_mass_flux_into_soil_from_vegetation_excluding_litter carbon mass flux into soil from vegetation excluding litter "Vegetation" means any plants e.g. trees, shrubs, grass. "Litter" is dead plant material in or above the soil. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2010-10-11
cell_area cell area "Cell_ area" is the horizontal area of a gridcell. 2008-10-21
cell_thickness cell thickness "Thickness" means the vertical extent of a layer. "Cell" refers to a model grid-cell. 2009-07-06
change_in_atmosphere_energy_content_due_to_change_in_sigma_coordinate_wrt_surface_pressure change in atmosphere energy content due to change in sigma coordinate wrt surface pressure The surface called "surface" means the lower boundary of the atmosphere. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "wrt" means with respect to. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Atmosphere energy content" has not yet been precisely defined! Please express your views on this quantity on the CF email list. See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
change_in_energy_content_of_atmosphere_layer_due_to_change_in_sigma_coordinate_wrt_surface_pressure change in energy content of atmosphere layer due to change in sigma coordinate wrt surface pressure "Content" indicates a quantity per unit area. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The abbreviation "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. See Appendix D of the CF convention for information about parametric vertical coordinates. 2019-05-14
change_in_land_ice_amount change in land ice amount "Amount" means mass per unit area. Zero change in land ice amount is an arbitrary level. "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock and also includes ice-shelves. 2016-03-08
change_in_land_ice_mass change in land ice mass Zero change in land ice mass is an arbitrary level. "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock and also includes ice-shelves. The horizontal domain over which the quantity is calculated is described by the associated coordinate variables and coordinate bounds or by a coordinate variable or scalar coordinate variable with the standard name of "region" supplied according to section 6.1.1 of the CF conventions. 2021-09-20
change_over_time_in_amount_of_ice_and_snow_on_land change over time in amount of ice and snow on land The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Amount" means mass per unit area. The phrase "ice_ and_ snow_ on_ land" means ice in glaciers, ice caps, ice sheets and shelves, river and lake ice, any other ice on a land surface, such as frozen flood water, and snow lying on such ice or on the land surface. 2018-08-06
change_over_time_in_atmosphere_mass_content_of_water_due_to_advection change over time in atmosphere mass content of water due to advection "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Water" means water in all phases. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2011-07-21
change_over_time_in_atmosphere_water_content_due_to_advection change over time in atmosphere water content due to advection DEPRECATED "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. "Water" means water in all phases. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2011-07-21
change_over_time_in_atmospheric_water_content_due_to_advection change over time in atmospheric water content due to advection DEPRECATED The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'change_ over_ time_ in_ X' means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. 'Content' indicates a quantity per unit area. 'Water' means water in all phases. 2010-03-11
change_over_time_in_canopy_water_amount change over time in canopy water amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Canopy water is the water on the canopy. "Water" means water in all phases, including frozen, i.e. ice and snow. "Amount" means mass per unit area. "Canopy" means the vegetative covering over a surface. The canopy is often considered to be the outer surfaces of the vegetation. Plant height and the distribution, orientation and shape of plant leaves within a canopy influence the atmospheric environment and many plant processes within the canopy. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Canopy. 2018-07-10
change_over_time_in_groundwater_amount change over time in groundwater amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Water" means water in all phases. Groundwater is subsurface water below the depth of the water table. "Amount" means mass per unit area. 2018-07-03
change_over_time_in_land_surface_liquid_water_amount change over time in land surface liquid water amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. The surface called "surface" means the lower boundary of the atmosphere. "Amount" means mass per unit area. "Land surface liquid water amount" includes water in rivers, wetlands, lakes, reservoirs and liquid precipitation intercepted by the vegetation canopy. 2018-07-10
change_over_time_in_land_water_amount change over time in land water amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Amount" means mass per unit area. "Water" means water in all phases. The phrase "land_ water_ amount", often known as "Terrestrial Water Storage", includes: surface liquid water (water in rivers, wetlands, lakes, reservoirs, rainfall intercepted by the canopy); surface ice and snow (glaciers, ice caps, grounded ice sheets not displacing sea water, river and lake ice, other surface ice such as frozen flood water, snow lying on the surface and intercepted by the canopy); subsurface water (liquid and frozen soil water, groundwater). 2018-07-10
change_over_time_in_mass_content_of_water_in_soil change over time in mass content of water in soil The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Content" indicates a quantity per unit area. The mass content of water in soil refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including "content_ of_ soil_ layer" are used. "Water" means water in all phases. 2018-05-29
change_over_time_in_river_water_amount change over time in river water amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Water" means water in all phases. "River" refers to the water in the fluvial system (stream and floodplain). "Amount" means mass per unit area. 2018-07-03
change_over_time_in_sea_water_absolute_salinity change over time in sea water absolute salinity "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Absolute Salinity, S_ A, is defined as part of the Thermodynamic Equation of Seawater 2010 (TEOS-10) which was adopted in 2010 by the Intergovernmental Oceanographic Commission (IOC). It is the mass fraction of dissolved material in sea water. Absolute Salinity incorporates the spatial variations in the composition of sea water. This type of Absolute Salinity is also called "Density Salinity". TEOS-10 estimates Absolute Salinity as the salinity variable that, when used with the TEOS-10 expression for density, yields the correct density of a sea water sample even when the sample is not of Reference Composition. In practice, Absolute Salinity is often calculated from Practical Salinity using a spatial lookup table of pre-defined values of the Absolute Salinity Anomaly. It is recommended that the version of (TEOS-10) software and the associated Absolute Salinity Anomaly climatology be specified within metadata by attaching a comment attribute to the data variable. Reference: www.teos-10.org; Millero et al., 2008 doi: 10.1016/j.dsr.2007.10.001. There are also standard names for the precisely defined salinity quantities sea_ water_ knudsen_ salinity, S_ K (used for salinity observations between 1901 and 1966), sea_ water_ cox_ salinity, S_ C (used for salinity observations between 1967 and 1977), sea_ water_ practical_ salinity, S_ P (used for salinity observations from 1978 onwards), sea_ water_ preformed_ salinity, S_ *, and sea_ water_ reference_ salinity. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_ water_ salinity. 2012-04-27
change_over_time_in_sea_water_conservative_temperature change over time in sea water conservative temperature "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Conservative Temperature is defined as part of the Thermodynamic Equation of Seawater 2010 (TEOS-10) which was adopted in 2010 by the International Oceanographic Commission (IOC). Conservative Temperature is specific potential enthalpy (which has the standard name sea_ water_ specific_ potential_ enthalpy) divided by a fixed value of the specific heat capacity of sea water, namely cp_ 0 = 3991.86795711963 J kg-1 K-1. Conservative Temperature is a more accurate measure of the "heat content" of sea water, by a factor of one hundred, than is potential temperature. Because of this, it can be regarded as being proportional to the heat content of sea water per unit mass. Reference: www.teos-10.org; McDougall, 2003 doi: 10.1175/1520-0485(2003)033<0945:PEACOV>2.0.CO;2. 2013-11-08
change_over_time_in_sea_water_density change over time in sea water density Sea water density is the in-situ density (not the potential density). If 1000 kg m-3 is subtracted, the standard name "sea_ water_ sigma_ t" should be chosen instead. "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. 2011-07-21
change_over_time_in_sea_water_neutral_density change over time in sea water neutral density "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Neutral density" is a variable designed so that a surface of constant neutral density everywhere has a local slope that is close to the local slope of the neutral tangent plane. At the sea surface in the equatorial Pacific neutral density is very close to the potential density anomaly. At other locations, this is not the case. For example, along a neutral density surface there is a difference of up to 0.14 kg/m^3 in the potential density anomaly at the outcrops in the Southern and Northern hemispheres. Refer to Jackett &amp; McDougall (1997; Journal of Physical Oceanography, Vol 27, doi: 10.1175/1520-0485(1997)027&lt;0237:ANDVFT&gt;2.0.CO;2) for more information. 2011-07-21
change_over_time_in_sea_water_potential_density change over time in sea water potential density The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time interval, which should be defined by the bounds of the time coordinate. Sea water potential density is the density a parcel of sea water would have if moved adiabatically to a reference pressure, by default assumed to be sea level pressure. To specify the reference pressure to which the quantity applies, provide a scalar coordinate variable with standard name reference_ pressure. The density of a substance is its mass per unit volume. For sea water potential density, if 1000 kg m-3 is subtracted, the standard name "sea_ water_ sigma_ theta" should be chosen instead. 2020-02-03
change_over_time_in_sea_water_potential_temperature change over time in sea water potential temperature Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. 2011-07-21
change_over_time_in_sea_water_practical_salinity change over time in sea water practical salinity The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time interval, which should be defined by the bounds of the time coordinate. Practical Salinity, S_ P, is a determination of the salinity of sea water, based on its electrical conductance. The measured conductance, corrected for temperature and pressure, is compared to the conductance of a standard potassium chloride solution, producing a value on the Practical Salinity Scale of 1978 (PSS-78). This name should not be used to describe salinity observations made before 1978, or ones not based on conductance measurements. Conversion of Practical Salinity to other precisely defined salinity measures should use the appropriate formulas specified by TEOS-10. Other standard names for precisely defined salinity quantities are sea_ water_ absolute_ salinity (S_ A); sea_ water_ preformed_ salinity (S_ *), sea_ water_ reference_ salinity (S_ R); sea_ water_ cox_ salinity (S_ C), used for salinity observations between 1967 and 1977; and sea_ water_ knudsen_ salinity (S_ K), used for salinity observations between 1901 and 1966. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_ water_ salinity. Reference: www.teos-10.org; Lewis, 1980 doi:10.1109/JOE.1980.1145448. 2019-03-04
change_over_time_in_sea_water_preformed_salinity change over time in sea water preformed salinity "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Preformed Salinity, S*, is defined as part of the Thermodynamic Equation of Seawater 2010 (TEOS-10) which was adopted in 2010 by the Intergovernmental Oceanographic Commission (IOC). Preformed Salinity is a salinity variable that is designed to be as conservative as possible, by removing the estimated biogeochemical influences on the sea water composition. Preformed Salinity is Absolute Salinity, S_ A (which has the standard name sea_ water_ absolute_ salinity), minus all contributions to sea water composition from biogeochemical processes. Preformed Salinity is the mass fraction of dissolved material in sea water. Reference: www.teos-10.org; Pawlowicz et al., 2011 doi: 10.5194/os-7-363-2011; Wright et al., 2011 doi: 10.5194/os-7-1-2011. There are also standard names for the precisely defined salinity quantities sea_ water_ knudsen_ salinity, S_ K (used for salinity observations between 1901 and 1966), sea_ water_ cox_ salinity, S_ C (used for salinity observations between 1967 and 1977), sea_ water_ practical_ salinity, S_ P (used for salinity observations from 1978 onwards), and sea_ water_ reference_ salinity. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_ water_ salinity. 2012-04-27
change_over_time_in_sea_water_salinity change over time in sea water salinity "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Sea water salinity is the salt content of sea water, often on the Practical Salinity Scale of 1978. However, the unqualified term &amp;apos;salinity&amp;apos; is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. There are standard names for the more precisely defined salinity quantities: sea_ water_ knudsen_ salinity, S_ K (used for salinity observations between 1901 and 1966), sea_ water_ cox_ salinity, S_ C (used for salinity observations between 1967 and 1977), sea_ water_ practical_ salinity, S_ P (used for salinity observations from 1978 to the present day), sea_ water_ absolute_ salinity, S_ A, sea_ water_ preformed_ salinity, S_ *, and sea_ water_ reference_ salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows: S_ P = (S_ K - 0.03) * (1.80655 / 1.805) and S_ P = S_ C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_ C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_ water_ salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_ water_ practical_ salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. The unit "parts per thousand" was used for sea_ water_ knudsen_ salinity and sea_ water_ cox_ salinity. 2012-04-27
change_over_time_in_sea_water_specific_potential_enthalpy change over time in sea water specific potential enthalpy "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. The potential enthalpy of a sea water parcel is the specific enthalpy after an adiabatic and isohaline change in pressure from its in situ pressure to the sea pressure p = 0 dbar. "specific" means per unit mass. Reference: www.teos-10.org; McDougall, 2003 doi: 10.1175/1520-0485(2003)033&lt;0945:PEACOV&gt;2.0.CO;2. 2012-04-27
change_over_time_in_sea_water_temperature change over time in sea water temperature "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate.Sea water temperature is the in situ temperature of the sea water. To specify the depth at which the temperature applies use a vertical coordinate variable or scalar coordinate variable. There are standard names for sea_ surface_ temperature, sea_ surface_ skin_ temperature, sea_ surface_ subskin_ temperature and sea_ surface_ foundation_ temperature which can be used to describe data located at the specified surfaces. For observed data, depending on the period during which the observation was made, the measured in situ temperature was recorded against standard "scales". These historical scales include the International Practical Temperature Scale of 1948 (IPTS-48; 1948-1967), the International Practical Temperature Scale of 1968 (IPTS-68, Barber, 1969; 1968-1989) and the International Temperature Scale of 1990 (ITS-90, Saunders 1990; 1990 onwards). Conversion of data between these scales follows t68 = t48 - (4.4 x 10e-6) * t48(100 - t - 48); t90 = 0.99976 * t68. Observations made prior to 1948 (IPTS-48) have not been documented and therefore a conversion cannot be certain. Differences between t90 and t68 can be up to 0.01 at temperatures of 40 C and above; differences of 0.002-0.007 occur across the standard range of ocean temperatures (-10 - 30 C). The International Equation of State of Seawater 1980 (EOS-80, UNESCO, 1981) and the Practical Salinity Scale (PSS-78) were both based on IPTS-68, while the Thermodynamic Equation of Seawater 2010 (TEOS-10) is based on ITS-90. References: Barber, 1969, doi: 10.1088/0026-1394/5/2/001; UNESCO, 1981; Saunders, 1990, WOCE Newsletter, 10, September 1990. 2012-04-27
change_over_time_in_surface_snow_amount change over time in surface snow amount The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Amount" means mass per unit area. Surface snow amount refers to the amount on the solid ground or on surface ice cover, but excludes, for example, falling snowflakes and snow on plants. 2021-01-18
change_over_time_in_thermal_energy_content_of_ice_and_snow_on_land change over time in thermal energy content of ice and snow on land The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. Thermal energy is the total vibrational energy, kinetic and potential, of all the molecules and atoms in a substance. The phrase "ice_ and_ snow_ on_ land" means ice in glaciers, ice caps, ice sheets and shelves, river and lake ice, any other ice on a land surface, such as frozen flood water, and snow lying on such ice or on the land surface. 2018-08-06
change_over_time_in_thermal_energy_content_of_vegetation_and_litter_and_soil change over time in thermal energy content of vegetation and litter and soil The phrase "change_ over_ time_ in_ X" means change in a quantity X over a time-interval, which should be defined by the bounds of the time coordinate. "Content" indicates a quantity per unit area. Thermal energy is the total vibrational energy, kinetic and potential, of all the molecules and atoms in a substance. "Vegetation" means any living plants e.g. trees, shrubs, grass. The term "plants" refers to the kingdom of plants in the modern classification which excludes fungi. Plants are autotrophs i.e. "producers" of biomass using carbon obtained from carbon dioxide. "Litter" is dead plant material in or above the soil. It is distinct from coarse wood debris. The precise distinction between "fine" and "coarse" is model dependent. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including "content_ of_ soil_ layer" are used. 2018-05-29
charnock_coefficient_for_surface_roughness_length_for_momentum_in_air charnock coefficient for surface roughness length for momentum in air Coefficient value, based on the Charnock (1955) empirical expression for deriving the quantity with standard name surface_ roughness_ length_ for_ momentum_ in_ air over the ocean. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Charnock%27s_ relation. The surface called "surface" means the lower boundary of the atmosphere. 2018-10-15
chlorophyll_concentration_in_sea_water chlorophyll concentration in sea water DEPRECATED 2006-09-26
clear_sky_area_fraction clear sky area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The clear_ sky area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. "Clear sky" means in the absence of clouds. 2019-05-14
climatology_test_quality_flag climatology test quality flag A quality flag that reports the result of the Climatology test, which checks that values are within reasonable range bounds for a given time and location. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. There are standard names for other specific quality tests which take the form of X_ quality_ flag. Quality information that does not match any of the specific quantities should be given the more general standard name of quality_ flag. 2020-03-09
cloud_albedo cloud albedo The albedo of cloud. Albedo is the ratio of outgoing to incoming shortwave irradiance, where 'shortwave irradiance' means that both the incoming and outgoing radiation are integrated across the solar spectrum. 2018-07-03
cloud_area_fraction cloud area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_ area_ fraction_ in_ atmosphere_ layer" are used. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
cloud_area_fraction_in_atmosphere_layer cloud area fraction in atmosphere layer "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Standard names referring only to "cloud_ area_ fraction" should be used for quantities for the whole atmosphere column. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
cloud_base_altitude cloud base altitude cloud_ base refers to the base of the lowest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2006-09-26
cloud_binary_mask cloud binary mask X_ binary_ mask has 1 where condition X is met, 0 elsewhere. 1 = cloud present, 0 = cloud absent (clear). If no threshold is supplied, the binary mask is 1 if there is any non-zero amount of cloud. if a threshold is supplied, it should be specified by associating a coordinate variable or scalar coordinate variable with the data variable and giving the coordinate variable a standard name of cloud_ area_ fraction. The values of the coordinate variable are the threshold values for the corresponding subarrays of the data variable. 2015-07-08
cloud_condensed_water_content_of_atmosphere_layer cloud condensed water content of atmosphere layer DEPRECATED 'condensed_ water' means liquid and ice. 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. 2011-07-21
cloud_ice_content_of_atmosphere_layer cloud ice content of atmosphere layer DEPRECATED 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. 2011-07-21
cloud_ice_mixing_ratio cloud ice mixing ratio Cloud ice mixing ratio of a parcel of air is the ratio of the mass of ice to the mass of dry air. 2008-11-11
cloud_liquid_water_content_of_atmosphere_layer cloud liquid water content of atmosphere layer DEPRECATED 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. 2011-07-21
cloud_liquid_water_mixing_ratio cloud liquid water mixing ratio Cloud liquid water mixing ratio of a parcel of air is the ratio of the mass of liquid water to the mass of dry air. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
cloud_longwave_emissivity cloud longwave emissivity Emissivity is the ratio of the power emitted by an object to the power that would be emitted by a perfect black body having the same temperature as the object. The emissivity is assumed to be an integral over all wavelengths, unless a coordinate of radiation_ wavelength or radiation_ frequency is included to specify either the wavelength or frequency. "longwave" means longwave radiation. 2009-07-06
cloud_top_altitude cloud top altitude cloud_ top refers to the top of the highest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2006-09-26
colony_forming_unit_number_concentration_of_biological_taxon_in_sea_water colony forming unit number concentration of biological taxon in sea water "Colony forming unit" means an estimate of the viable bacterial or fungal numbers determined by counting colonies grown from a sample. "Number concentration" means the number of particles or other specified objects per unit volume. "Biological taxon" is a name or other label identifying an organism or a group of organisms as belonging to a unit of classification in a hierarchical taxonomy. There must be an auxiliary coordinate variable with standard name biological_ taxon_ name to identify the taxon in human readable format and optionally an auxiliary coordinate variable with standard name biological_ taxon_ lsid to provide a machine-readable identifier. See Section 6.1.2 of the CF convention (version 1.8 or later) for information about biological taxon auxiliary coordinate variables. 2021-09-20
compressive_strength_of_sea_ice compressive strength of sea ice "Compressive strength" is a measure of the capacity of a material to withstand compressive forces. If compressive forces are exerted on a material in excess of its compressive strength, fracturing will occur. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
concentration_of_chlorophyll_in_sea_water concentration of chlorophyll in sea water DEPRECATED 2009-07-06
concentration_of_colored_dissolved_organic_matter_in_sea_water_expressed_as_equivalent_mass_fraction_of_quinine_sulfate_dihydrate concentration of colored dissolved organic matter in sea water expressed as equivalent mass fraction of quinine sulfate dihydrate The quantity with standard name concentration_ of_ colored_ dissolved_ organic_ matter_ in_ sea_ water_ expressed_ as_ equivalent_ mass_ fraction_ of_ quinine_ sulfate_ dihydrate is also commonly known as Chromophoric Dissolved Organic Matter (CDOM). CDOM plays an important role in the carbon cycling and biogeochemistry of coastal waters. It occurs naturally in aquatic environments primarily as a result of tannins released from decaying plant and animal matter, which can enter coastal areas in river run-off containing organic materials leached from soils. When present in high concentrations, it imparts a brown or yellowish color to water. Its presence can negatively impact fish populations by reducing dissolved oxygen concentrations to harmful levels and by releasing nutrients and metals that contaminate the water. Increased understanding of the role of CDOM will further our ability to manage and protect coastal ecosystems. Sensors are commonly calibrated against a 100 parts per billion (ppb) quinine sulfate dihydrate solution, a fluorescent reference standard commonly used with CDOM sensors. CDOM sensors therefore report in "QSDE" (quinine sulfate dihydrate equivalents). It is important to note, however, that CDOM concentrations in QSDE are not necessarily equivalent to the in situ CDOM concentrations in ppb. 2016-05-17
concentration_of_suspended_matter_in_sea_water concentration of suspended matter in sea water DEPRECATED 2009-07-06
convection_time_fraction convection time fraction "Time fraction" means a fraction of a time interval. The interval in question must be specified by the values or bounds of the time coordinate variable associated with the data. "X_ time_ fraction" means the fraction of the time interval during which X occurs. 2010-10-11
convective_cloud_area_fraction convective cloud area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_ area_ fraction_ in_ atmosphere_ layer" are used. Standard names also exist for high, medium and low cloud types. Convective cloud is that produced by the convection schemes in an atmosphere model. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
convective_cloud_area_fraction_in_atmosphere_layer convective cloud area fraction in atmosphere layer "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Standard names referring only to "cloud_ area_ fraction" should be used for quantities for the whole atmosphere column. Standard names also exist for high, medium and low cloud types. Convective cloud is that produced by the convection schemes in an atmosphere model. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
convective_cloud_base_altitude convective cloud base altitude cloud_ base refers to the base of the lowest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. Convective cloud is that produced by the convection schemes in an atmosphere model. 2006-09-26
convective_cloud_base_height convective cloud base height cloud_ base refers to the base of the lowest cloud. Height is the vertical distance above the surface. Convective cloud is that produced by the convection schemes in an atmosphere model. 2006-09-26
convective_cloud_longwave_emissivity convective cloud longwave emissivity Emissivity is the ratio of the power emitted by an object to the power that would be emitted by a perfect black body having the same temperature as the object. The emissivity is assumed to be an integral over all wavelengths, unless a coordinate of radiation_ wavelength or radiation_ frequency is included to specify either the wavelength or frequency. Convective cloud is that produced by the convection schemes in an atmosphere model. "longwave" means longwave radiation. 2009-07-06
convective_cloud_top_altitude convective cloud top altitude cloud_ top refers to the top of the highest cloud. Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. Convective cloud is that produced by the convection schemes in an atmosphere model. 2006-09-26
convective_cloud_top_height convective cloud top height cloud_ top refers to the top of the highest cloud. Height is the vertical distance above the surface. Convective cloud is that produced by the convection schemes in an atmosphere model. 2006-09-26
convective_precipitation_amount convective precipitation amount "Amount" means mass per unit area. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. Convective precipitation is that produced by the convection schemes in an atmosphere model. 2018-08-06
convective_precipitation_flux convective precipitation flux Convective precipitation is that produced by the convection schemes in an atmosphere model. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-08-06
convective_precipitation_rate convective precipitation rate "Precipitation rate" means the depth or thickness of the layer formed by precipitation per unit time. Convective precipitation is that produced by the convection schemes in an atmosphere model. "Precipitation" in the earth's atmosphere means precipitation of water in all phases. 2018-08-06
convective_rainfall_amount convective rainfall amount 'Amount' means mass per unit area. 2006-09-26
convective_rainfall_flux convective rainfall flux In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
convective_rainfall_rate convective rainfall rate 2006-09-26
convective_snowfall_amount convective snowfall amount 'Amount' means mass per unit area. 2006-09-26
convective_snowfall_flux convective snowfall flux In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
coriolis_parameter coriolis parameter The Coriolis parameter is twice the component of the earth's angular velocity about the local vertical i.e. 2 W sin L, where L is latitude and W the angular speed of the earth. 2006-09-26
correction_for_model_negative_specific_humidity correction for model negative specific humidity A numerical correction which is added to modelled negative specific humidities in order to obtain a value of zero. 2007-02-20
covariance_over_longitude_of_northward_wind_and_air_temperature covariance over longitude of northward wind and air temperature Covariance refers to the sample covariance rather than the population covariance. The quantity with standard name covariance_ over_ longitude_ of_ northward_ wind_ and_ air_ temperature is the covariance of the deviations of meridional air velocity and air temperature about their respective zonal mean values. The data variable must be accompanied by a vertical coordinate variable or scalar coordinate variable and is calculated on an isosurface of that vertical coordinate. "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity"). Air temperature is the bulk temperature of the air, not the surface (skin) temperature. 2019-10-14
depth depth Depth is the vertical distance below the surface. 2006-09-26
depth_at_base_of_unfrozen_ground depth at base of unfrozen ground The phrase depth_ at_ base_ of_ unfrozen_ ground is the instantaneous depth of the downward penetration of thaw from the ground surface at a given time. Permafrost is soil or rock that has remained at a temperature at or below zero degrees Celsius throughout the seasonal cycle for two or more consecutive years. The maximum measurable depth_ at_ base_ of_ unfrozen_ ground value as recorded at the end of a thawing season corresponds to the permafrost_ active_ layer_ thickness. 2021-09-20
depth_at_maximum_upward_derivative_of_sea_water_potential_temperature depth at maximum upward derivative of sea water potential temperature This quantity, often used to indicate the "thermocline depth", is the depth of the maximum vertical gradient of sea water potential temperature. Depth is the vertical distance below the surface. Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. 2008-10-21
depth_at_shallowest_isotherm_defined_by_soil_temperature depth at shallowest isotherm defined by soil temperature Depth is the vertical distance below the surface. A soil temperature profile may go through one or more local minima or maxima. The "depth at shallowest isotherm" is the depth of the occurrence closest to the soil surface of an isotherm of the temperature specified by a coordinate variable or scalar coordinate variable with standard name soil_ temperature. 2018-07-10
depth_at_shallowest_local_minimum_in_vertical_profile_of_mole_concentration_of_dissolved_molecular_oxygen_in_sea_water depth at shallowest local minimum in vertical profile of mole concentration of dissolved molecular oxygen in sea water Depth is the vertical distance below the surface. 'Mole concentration' means number of moles per unit volume, also called "molarity", and is used in the construction mole_ concentration_ of_ X_ in_ Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as 'nitrogen' or a phrase such as 'nox_ expressed_ as_ nitrogen'. The concentration of any chemical species, whether particulate or dissolved, may vary with depth in the ocean. A depth profile may go through one or more local minima in concentration. The depth_ at_ shallowest_ local_ minimum_ in_ vertical_ profile_ of_ mole_ concentration_ of_ dissolved_ molecular_ oxygen_ in_ sea_ water is the depth of the local minimum in the oxygen concentration that occurs closest to the sea surface. 2010-05-12
depth_below_geoid depth below geoid The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. (The volume enclosed between the geoid and the sea floor equals the mean volume of water in the ocean). In an ocean GCM the geoid is the surface of zero depth, or the rigid lid if the model uses that approximation. To specify which geoid or geopotential datum is being used as a reference level, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. "Depth_ below_ X" means the vertical distance below the named surface X. 2017-07-24
depth_below_sea_floor depth below sea floor "Depth_ below_ X" means the vertical distance below the named surface X. 2016-05-17
depth_of_isosurface_of_sea_water_potential_temperature depth of isosurface of sea water potential temperature This quantity, sometimes called the "isotherm depth", is the depth (if it exists) at which the sea water potential temperature equals some specified value. This value should be specified in a scalar coordinate variable. Depth is the vertical distance below the surface. Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. 2008-10-21
dew_point_depression dew point depression Dew point depression is also called dew point deficit. It is the amount by which the air temperature exceeds its dew point temperature. Dew point temperature is the temperature at which a parcel of air reaches saturation upon being cooled at constant pressure and specific humidity. 2006-09-26
dew_point_temperature dew point temperature Dew point temperature is the temperature at which a parcel of air reaches saturation upon being cooled at constant pressure and specific humidity. 2006-09-26
diameter_of_ambient_aerosol_particles diameter of ambient aerosol particles "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2019-05-14
difference_between_sea_surface_temperature_and_air_temperature difference between sea surface temperature and air temperature Sea surface temperature is usually abbreviated as "SST". It is the temperature of sea water near the surface (including the part under sea-ice, if any), not the skin or interface temperature, whose standard names are sea_ surface_ skin_ temperature and surface_ temperature, respectively. For the temperature of sea water at a particular depth or layer, a data variable of "sea_ water_ temperature" with a vertical coordinate axis should be used. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. 2021-09-20
difference_of_air_pressure_from_model_reference difference of air pressure from model reference In some atmosphere models, the difference of air pressure from model reference is a prognostic variable, instead of the air pressure itself. The model reference air pressure is a model-dependent constant. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
diffuse_downwelling_shortwave_flux_in_air diffuse downwelling shortwave flux in air "Diffuse" radiation is radiation that has been scattered by gas molecules in the atmosphere and by particles such as cloud droplets and aerosols. Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
diffuse_downwelling_shortwave_flux_in_air_assuming_clear_sky diffuse downwelling shortwave flux in air assuming clear sky "Diffuse" radiation is radiation that has been scattered by gas molecules in the atmosphere and by particles such as cloud droplets and aerosols. Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A phrase assuming_ condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds. 2018-07-03
dimensionless_exner_function dimensionless exner function The term "Exner function" is applied to various quantities in the literature. "Dimensionless Exner function" is the standard name of (p/p0)^(R/Cp), where p is pressure, p0 a reference pressure, R the gas constant and Cp the specific heat at constant pressure. This quantity is also the ratio of in-situ to potential temperature. Standard names for other variants can be defined on request. To specify the reference pressure to which the quantity applies, provide a scalar coordinate variable with standard name reference_ pressure. 2020-02-03
direct_downwelling_shortwave_flux_in_air direct downwelling shortwave flux in air "Direct" (also known as "beam") radiation is radiation that has followed a direct path from the sun and is alternatively known as "direct insolation". Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
direction_of_radial_vector_away_from_instrument direction of radial vector away from instrument The phrase "direction_ of_ X" means direction of a vector, a bearing. The direction is measured positive clockwise from due north. The direction_ of_ radial_ vector_ away_ from_ instrument is the direction in which the instrument itself is pointing. The "instrument" (examples are radar and lidar) is the device used to make an observation. The standard name direction_ of_ radial_ vector_ toward_ instrument should be used for a data variable having the opposite sign convention. 2019-06-17
direction_of_radial_vector_toward_instrument direction of radial vector toward instrument The phrase "direction_ of_ X" means direction of a vector, a bearing. The direction is measured positive clockwise from due north. The direction_ of_ radial_ vector_ toward_ instrument is the direction opposite to that in which the instrument itself is pointing. The "instrument" (examples are radar and lidar) is the device used to make an observation. The standard name direction_ of_ radial_ vector_ away_ from_ instrument should be used for a data variable having the opposite sign convention. 2019-06-17
direction_of_sea_ice_displacement direction of sea ice displacement The phrase "direction_ of_ X" means direction of a vector, a bearing. "Displacement" means the change in geospatial position of an object that has moved over time. If possible, the time interval over which the motion took place should be specified using a bounds variable for the time coordinate variable. A displacement can be represented as a vector. Such a vector should however not be interpreted as describing a rectilinear, constant speed motion but merely as an indication that the start point of the vector is found at the tip of the vector after the time interval associated with the displacement variable. A displacement does not prescribe a trajectory. Sea ice displacement can be defined as a two-dimensional vector, with no vertical component. In that case, "displacement" is also the distance across the earth's surface calculated from the change in a moving object's geospatial position between the start and end of the time interval associated with the displacement variable. The "direction of displacement" is the angle between due north and the displacement vector. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
direction_of_sea_ice_velocity direction of sea ice velocity The phrase "direction_ of_ X" means direction of a vector, a bearing. A velocity is a vector quantity. Sea ice velocity is defined as a two-dimensional vector, with no vertical component. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
direction_of_sea_water_velocity direction of sea water velocity DEPRECATED 'direction_ of_ X' means direction of a vector, a bearing. A velocity is a vector quantity. 2017-09-18
direction_of_swell_wave_velocity direction of swell wave velocity DEPRECATED Swell waves are waves on the ocean surface. 'to_ direction' is used in the construction X_ to_ direction and indicates the direction towards which the velocity vector of X is headed. 2006-09-26
direction_of_wind_wave_velocity direction of wind wave velocity DEPRECATED Wind waves are waves on the ocean surface. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) 'to_ direction' is used in the construction X_ to_ direction and indicates the direction towards which the velocity vector of X is headed. 2006-09-26
dissipation_in_atmosphere_boundary_layer dissipation in atmosphere boundary layer DEPRECATED 2010-07-26
distance_from_geocenter distance from geocenter A measure of distance from the Earth's geocenter, commonly used in satellite tracks. 2016-04-05
distance_from_sun distance from sun The distance from the sun to the point of observation. 2015-07-08
distance_from_tropical_cyclone_center_to_leading_edge_of_displaced_convection distance from tropical cyclone center to leading edge of displaced convection The great circle distance measured from the tropical cyclone center to the leading edge of displaced convection, which is defined as the closest point that exceeds a threshold brightness temperature at top of atmosphere limit. The threshold applied should be recorded in a coordinate variable having the standard name of toa_ brightness_ temperature. A coordinate variable with standard name of radiation_ wavelength, sensor_ band_ central_ radiation_ wavelength, or radiation_ frequency may be specified to indicate that the brightness temperature applies at specific wavelengths or frequencies. 2015-07-08
divergence_of_sea_ice_velocity divergence of sea ice velocity The phrase "[horizontal_ ]divergence_ of_ X" means [horizontal] divergence of a vector X; if X does not have a vertical component then "horizontal" should be omitted. A velocity is a vector quantity. Sea ice velocity is defined as a two-dimensional vector, with no vertical component. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
divergence_of_wind divergence of wind '[horizontal_ ]divergence_ of_ X' means [horizontal] divergence of a vector X; if X does not have a vertical component then 'horizontal' should be omitted. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) 2006-09-26
downward_air_velocity downward air velocity A velocity is a vector quantity."Downward" indicates a vector component which is positive when directed downward (negative upward). Downward air velocity is the vertical component of the 3D air velocity vector. The standard name upward_ air_ velocity may be used for a vector component with the opposite sign convention. 2017-07-24
downward_dry_static_energy_flux_due_to_diffusion downward dry static energy flux due to diffusion The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'Downward' indicates a vector component which is positive when directed downward (negative upward). Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_eastward_momentum_flux_in_air downward eastward momentum flux in air 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). 'Downward' indicates a vector component which is positive when directed downward (negative upward). 'Downward eastward' indicates the ZX component of a tensor. Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_eastward_momentum_flux_in_air_due_to_diffusion downward eastward momentum flux in air due to diffusion "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2019-02-04
downward_eastward_stress_at_sea_ice_base downward eastward stress at sea ice base "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_heat_flux_at_ground_level_in_snow downward heat flux at ground level in snow ground_ level means the land surface (beneath the snow and surface water, if any). 'Downward' indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_heat_flux_at_ground_level_in_soil downward heat flux at ground level in soil ground_ level means the land surface (beneath the snow and surface water, if any). 'Downward' indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_heat_flux_in_air downward heat flux in air 'Downward' indicates a vector component which is positive when directed downward (negative upward). The vertical heat flux in air is the sum of all heat fluxes i.e. radiative, latent and sensible. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_heat_flux_in_floating_ice downward heat flux in floating ice "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Floating ice" means any ice that is floating on water, e.g. on a sea or lake surface. 2008-11-11
downward_heat_flux_in_sea_ice downward heat flux in sea ice "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_heat_flux_in_soil downward heat flux in soil 'Downward' indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_liquid_water_mass_flux_into_groundwater downward liquid water mass flux into groundwater In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Groundwater is subsurface water below the depth of the water table. The quantity with standard name liquid_ water_ mass_ flux_ from_ soil_ to_ groundwater is the downward flux of liquid water within soil at the depth of the water table, or downward flux from the base of the soil model if the water table depth is greater. 2018-07-03
downward_northward_momentum_flux_in_air downward northward momentum flux in air 'Northward' indicates a vector component which is positive when directed northward (negative southward). 'Downward' indicates a vector component which is positive when directed downward (negative upward). 'Downward northward' indicates the ZY component of a tensor. Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_northward_momentum_flux_in_air_due_to_diffusion downward northward momentum flux in air due to diffusion "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2010-05-12
downward_northward_stress_at_sea_ice_base downward northward stress at sea ice base "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_sea_ice_basal_salt_flux downward sea ice basal salt flux "Downward" indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_water_vapor_flux_in_air_due_to_diffusion downward water vapor flux in air due to diffusion The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 'Downward' indicates a vector component which is positive when directed downward (negative upward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
downward_x_stress_at_sea_ice_base downward x stress at sea ice base "x" indicates a vector component along the grid x-axis, positive with increasing x. "Downward" indicates a vector component which is positive when directed downward (negative upward). "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_x_stress_at_sea_water_surface downward x stress at sea water surface "Downward" indicates a vector component which is positive when directed downward (negative upward). "x" indicates a vector component along the grid x-axis, positive with increasing x. A downward x stress is a downward flux of momentum towards the positive direction of the model's x-axis. The phrase "sea water surface" means the upper boundary of the liquid portion of an ocean or sea, including the boundary to floating ice if present. 2019-06-17
downward_x_stress_correction_at_sea_water_surface downward x stress correction at sea water surface "Downward" indicates a vector component which is positive when directed downward (negative upward). "x" indicates a vector component along the grid x-axis, positive with increasing x. A downward x stress is a downward flux of momentum towards the positive direction of the model's x-axis. A positive correction is downward i.e. added to the ocean. The phrase "sea water surface" means the upper boundary of the liquid portion of an ocean or sea, including the boundary to floating ice if present. 2019-06-17
downward_y_stress_at_sea_ice_base downward y stress at sea ice base "y" indicates a vector component along the grid y-axis, positive with increasing y. "Downward" indicates a vector component which is positive when directed downward (negative upward). "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downward_y_stress_at_sea_water_surface downward y stress at sea water surface "Downward" indicates a vector component which is positive when directed downward (negative upward). "y" indicates a vector component along the grid y-axis, positive with increasing y. A downward y stress is a downward flux of momentum towards the positive direction of the model's y-axis. The phrase "sea water surface" means the upper boundary of the liquid portion of an ocean or sea, including the boundary to floating ice if present. 2019-06-17
downward_y_stress_correction_at_sea_water_surface downward y stress correction at sea water surface "Downward" indicates a vector component which is positive when directed downward (negative upward). "y" indicates a vector component along the grid y-axis, positive with increasing y. A downward y stress is a downward flux of momentum towards the positive direction of the model's y-axis. A positive correction is downward i.e. added to the ocean. The phrase "sea water surface" means the upper boundary of the liquid portion of an ocean or sea, including the boundary to floating ice if present. 2019-06-17
downwelling_longwave_flux_in_air downwelling longwave flux in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "longwave" means longwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_longwave_flux_in_air_assuming_clear_sky downwelling longwave flux in air assuming clear sky Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "longwave" means longwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A phrase assuming_ condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds. 2018-07-03
downwelling_longwave_radiance_in_air downwelling longwave radiance in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "longwave" means longwave radiation. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2018-07-03
downwelling_photon_flux_in_sea_water downwelling photon flux in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. A photon flux is specified in terms of numbers of photons expressed in moles. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_photon_flux_per_unit_wavelength_in_sea_water downwelling photon flux per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. A photon flux is specified in terms of numbers of photons expressed in moles. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. 2018-07-03
downwelling_photon_radiance_in_sea_water downwelling photon radiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Photon radiance is the photon flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. A photon flux is specified in terms of numbers of photons expressed in moles. 2018-07-03
downwelling_photon_radiance_per_unit_wavelength_in_sea_water downwelling photon radiance per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Photon radiance is the photon flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. A photon flux is specified in terms of numbers of photons expressed in moles. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. 2018-07-03
downwelling_photon_spherical_irradiance_in_sea_water downwelling photon spherical irradiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Photon spherical irradiance is the photon flux incident on unit area of a hemispherical (or "2-pi") collector. Radiation incident on a 4-pi collector has a standard name referring to "omnidirectional spherical irradiance". A photon flux is specified in terms of numbers of photons expressed in moles. 2018-07-03
downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water downwelling photon spherical irradiance per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. Photon spherical irradiance is the photon flux incident on unit area of a hemispherical (or "2-pi") collector. The direction ("up/downwelling") is specified. Radiation incident on a 4-pi collector has a standard name referring to "omnidirectional spherical irradiance". A photon flux is specified in terms of numbers of photons expressed in moles. 2018-07-03
downwelling_photosynthetic_photon_flux_in_sea_water downwelling photosynthetic photon flux in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. A photon flux is specified in terms of numbers of photons expressed in moles. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_photosynthetic_photon_radiance_in_sea_water downwelling photosynthetic photon radiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Photon radiance is the photon flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. A photon flux is specified in terms of numbers of photons expressed in moles. 2018-07-03
downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water downwelling photosynthetic photon spherical irradiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. Photon spherical irradiance is the photon flux incident on unit area of a hemispherical (or "2-pi") collector. The direction ("up/downwelling") is specified. Radiation incident on a 4-pi collector has a standard name referring to "omnidirectional spherical irradiance". A photon flux is specified in terms of numbers of photons expressed in moles. 2018-07-03
downwelling_photosynthetic_radiance_in_sea_water downwelling photosynthetic radiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. 2018-07-03
downwelling_photosynthetic_radiative_flux_in_sea_water downwelling photosynthetic radiative flux in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_photosynthetic_spherical_irradiance_in_sea_water downwelling photosynthetic spherical irradiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_ wavelength. Spherical irradiance is the radiation incident on unit area of a hemispherical (or "2-pi") collector. It is sometimes called "scalar irradiance". The direction (up/downwelling) is specified. Radiation incident on a 4-pi collector has standard names of "omnidirectional spherical irradiance". 2018-07-03
downwelling_radiance_in_sea_water downwelling radiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2018-07-03
downwelling_radiance_per_unit_wavelength_in_air downwelling radiance per unit wavelength in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2018-07-03
downwelling_radiance_per_unit_wavelength_in_sea_water downwelling radiance per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2018-07-03
downwelling_radiative_flux_in_sea_water downwelling radiative flux in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Radiative flux is the sum of shortwave and longwave radiative fluxes. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_radiative_flux_per_unit_wavelength_in_air downwelling radiative flux per unit wavelength in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. 2018-07-03
downwelling_radiative_flux_per_unit_wavelength_in_sea_water downwelling radiative flux per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. 2018-07-03
downwelling_shortwave_flux_in_air downwelling shortwave flux in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_shortwave_flux_in_air_assuming_clean_clear_sky downwelling shortwave flux in air assuming clean clear sky DEPRECATED Downwelling radiation is radiation from above. It does not mean "net downward". The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A phrase "assuming_ condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clean sky" means in the absence of atmospheric aerosol. "Clear sky" means in the absence of clouds. 2018-05-30
downwelling_shortwave_flux_in_air_assuming_clear_sky downwelling shortwave flux in air assuming clear sky Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A phrase assuming_ condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds. 2018-07-03
downwelling_shortwave_flux_in_air_assuming_clear_sky_and_no_aerosol downwelling shortwave flux in air assuming clear sky and no aerosol Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A phrase "assuming_ condition" indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. "Clear sky" means in the absence of clouds. 2018-07-03
downwelling_shortwave_flux_in_sea_water downwelling shortwave flux in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2018-07-03
downwelling_shortwave_flux_in_sea_water_at_sea_ice_base downwelling shortwave flux in sea water at sea ice base Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
downwelling_shortwave_radiance_in_air downwelling shortwave radiance in air Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The term "shortwave" means shortwave radiation. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2018-07-03
downwelling_spectral_photon_flux_in_sea_water downwelling spectral photon flux in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. A photon flux is specified in terms of numbers of photons expressed in moles. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2013-06-27
downwelling_spectral_photon_radiance_in_sea_water downwelling spectral photon radiance in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. Photon radiance is the photon flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. A photon flux is specified in terms of numbers of photons expressed in moles. 2013-06-27
downwelling_spectral_photon_spherical_irradiance_in_sea_water downwelling spectral photon spherical irradiance in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. Photon spherical irradiance is the photon flux incident on unit area of a hemispherical (or '2-pi') collector. A photon flux is specified in terms of numbers of photons expressed in moles. 2013-06-27
downwelling_spectral_radiance_in_air downwelling spectral radiance in air DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2013-06-27
downwelling_spectral_radiance_in_sea_water downwelling spectral radiance in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_ angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. 2013-06-27
downwelling_spectral_radiative_flux_in_air downwelling spectral radiative flux in air DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. When thought of as being incident on a surface, a radiative flux is sometimes called 'irradiance'. In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called 'vector irradiance'. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2013-06-27
downwelling_spectral_radiative_flux_in_sea_water downwelling spectral radiative flux in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. When thought of as being incident on a surface, a radiative flux is sometimes called 'irradiance'. In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called 'vector irradiance'. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2013-06-27
downwelling_spectral_spherical_irradiance_in_sea_water downwelling spectral spherical irradiance in sea water DEPRECATED Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_ wavelength. Spherical irradiance is the radiation incident on unit area of a hemispherical (or '2-pi') collector. It is sometimes called 'scalar irradiance'. The direction (up/downwelling) is specified. Radiation incident on a 4-pi collector has standard names of 'omnidirectional spherical irradiance'. 2013-06-27
downwelling_spherical_irradiance_in_sea_water downwelling spherical irradiance in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Spherical irradiance is the radiation incident on unit area of a hemispherical (or "2-pi") collector. It is sometimes called "scalar irradiance". The direction (up/downwelling) is specified. Radiation incident on a 4-pi collector has standard names of "omnidirectional spherical irradiance". 2018-07-03
downwelling_spherical_irradiance_per_unit_wavelength_in_sea_water downwelling spherical irradiance per unit wavelength in sea water Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. Spherical irradiance is the radiation incident on unit area of a hemispherical (or "2-pi") collector. It is sometimes called "scalar irradiance". The direction (up/downwelling) is specified. Radiation incident on a 4-pi collector has standard names of "omnidirectional spherical irradiance". A coordinate variable for radiation wavelength should be given the standard name radiation_ wavelength. 2018-07-03
dry_atmosphere_mole_fraction_of_carbon_dioxide dry atmosphere mole fraction of carbon dioxide Mole fraction is used in the construction "mole_ fraction_ of_ X_ in_ Y", where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_ expressed_ as_ nitrogen". The construction "dry_ atmosphere_ mole_ fraction" means that the quantity refers to the whole atmospheric column and is calculated as the total number of particles of X in the column divided by the number of dry air particles in the same column, i.e. the effect of water vapor is excluded. For localized values within the atmospheric medium, standard names including "in_ air" are used. The chemical formula for carbon dioxide is CO2. 2016-03-08
dry_atmosphere_mole_fraction_of_methane dry atmosphere mole fraction of methane Mole fraction is used in the construction "mole_ fraction_ of_ X_ in_ Y", where X is a material constituent of Y. A chemical species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_ expressed_ as_ nitrogen". The construction "dry_ atmosphere_ mole_ fraction" means that the quantity refers to the whole atmospheric column and is calculated as the total number of particles of X in the column divided by the number of dry air particles in the same column, i.e. the effect of water vapor is excluded. For localized values within the atmospheric medium, standard names including "in_ air" are used. Methane is a member of the group of hydrocarbons known as alkanes. There are standard names for the alkane group as well as for some of the individual species. The chemical formula for methane is CH4. 2016-03-08
dry_energy_content_of_atmosphere_layer dry energy content of atmosphere layer 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Dry energy is the sum of dry static energy and kinetic energy. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
dry_static_energy_content_of_atmosphere_layer dry static energy content of atmosphere layer 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
duration_of_sunshine duration of sunshine The WMO definition of sunshine is that the surface incident radiative flux from the solar beam (i.e. excluding diffuse skylight) exceeds 120 W m-2. 'Duration' is the length of time for which a condition holds. 2006-09-26
dvorak_tropical_cyclone_current_intensity_number dvorak tropical cyclone current intensity number "Dvorak current intensity number" indicates the ranking of tropical cyclone strength (ranging from 1.0 to 8.0, increasing with storm intensity). The current intensity (CI) number is derived using the Advanced Dvorak Technique based on satellite observations over time. The CI number maps to a maximum sustained 1-minute wind speed and is derived by applying a series of intensity constraints to previous Dvorak-calculated trends of the same storm. Reference: Olander, T. L., and Velden, C. S., The Advanced Dvorak Technique: Continued Development of an Objective Scheme to Estimate Tropical Cyclone Intensity Using Geostationary Infrared Satellite Imagery (2007). American Meteorological Society Weather and Forecasting, 22, 287-298. 2015-07-08
dvorak_tropical_number dvorak tropical number The Advanced Dvorak Technique (ADT) is used to derive a set of Dvorak Tropical numbers using an objective pattern recognition algorithm to determine the intensity of a tropical cyclone by matching observed brightness temperature patterns, maximum sustained winds and minimum sea level pressure to a set of pre-defined tropical cyclone structures. Dvorak Tropical numbers range from 1.0 to 8.0, increasing with storm intensity. Reference: Olander, T. L., & Velden, C. S., The Advanced Dvorak Technique: Continued Development of an Objective Scheme to Estimate Tropical Cyclone Intensity Using Geostationary Infrared Satellite Imagery (2007). American Meteorological Society Weather and Forecasting, 22, 287-298. 2019-02-04
dynamic_tropopause_potential_temperature dynamic tropopause potential temperature The dynamical tropopause used in interpreting the dynamics of the upper troposphere and lower stratosphere. There are various definitions of dynamical tropopause in the scientific literature. 2008-04-15
eastward_air_velocity_relative_to_sea_water eastward air velocity relative to sea water The eastward motion of air, relative to near-surface eastward current; calculated as eastward_ wind minus eastward_ sea_ water_ velocity. A vertical coordinate variable or scalar coordinate with standard name "depth" should be used to indicate the depth of sea water velocity used in the calculation. Similarly, a vertical coordinate variable or scalar coordinate with standard name "height" should be used to indicate the height of the the wind component. A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). 2021-01-18
eastward_atmosphere_dry_static_energy_transport_across_unit_distance eastward atmosphere dry static energy transport across unit distance 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Transport across_ unit_ distance means expressed per unit distance normal to the direction of transport. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
eastward_atmosphere_water_transport_across_unit_distance eastward atmosphere water transport across unit distance 'Water' means water in all phases. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Transport across_ unit_ distance means expressed per unit distance normal to the direction of transport. 2006-09-26
eastward_atmosphere_water_vapor_transport_across_unit_distance eastward atmosphere water vapor transport across unit distance 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Transport across_ unit_ distance means expressed per unit distance normal to the direction of transport. 2006-09-26
eastward_derivative_of_eastward_wind eastward derivative of eastward wind The quantity with standard name eastward_ derivative_ of_ eastward_ wind is the derivative of the eastward component of wind with respect to distance in the eastward direction for a given atmospheric level. The phrase "component_ derivative_ of_ X" means derivative of X with respect to distance in the component direction, which may be "northward", "southward", "eastward", "westward", "upward", "downward", "x" or "y". The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. A positive value indicates that X is increasing with distance along the positive direction of the axis. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity"). 2020-09-14
eastward_derivative_of_northward_sea_ice_velocity eastward derivative of northward sea ice velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Northward" indicates a vector component which is positive when directed northward (negative southward). Sea ice velocity is defined as a two-dimensional vector, with no vertical component. "component_ derivative_ of_ X" means derivative of X with respect to distance in the component direction, which may be northward, southward, eastward, westward, x or y. The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. The named quantity is a component of the strain rate tensor for sea ice. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
eastward_derivative_of_northward_wind eastward derivative of northward wind The quantity with standard name eastward_ derivative_ of_ northward_ wind is the derivative of the northward component of wind with respect to distance in the eastward direction for a given atmospheric level. The phrase "component_ derivative_ of_ X" means derivative of X with respect to distance in the component direction, which may be "northward", "southward", "eastward", "westward", "upward", "downward", "x" or "y". The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. A positive value indicates that X is increasing with distance along the positive direction of the axis. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity"). 2020-09-14
eastward_derivative_of_wind_from_direction eastward derivative of wind from direction The quantity with standard name eastward_ derivative_ of_ wind_ from_ direction is the derivative of wind from_ direction with respect to the change in eastward lateral position for a given atmospheric level. The phrase "component_ derivative_ of_ X" means derivative of X with respect to distance in the component direction, which may be "northward", "southward", "eastward", "westward", "upward", "downward", "x" or "y". The last two indicate derivatives along the axes of the grid, in the case where they are not true longitude and latitude. A positive value indicates that X is increasing with distance along the positive direction of the axis. The phrase "from_ direction" is used in the construction X_ from_ direction and indicates the direction from which the velocity vector of X is coming. The direction is a bearing in the usual geographical sense, measured positive clockwise from due north. In meteorological reports, the direction of the wind vector is usually (but not always) given as the direction from which it is blowing ("wind_ from_ direction") (westerly, northerly, etc.). In other contexts, such as atmospheric modelling, it is often natural to give the direction in the usual manner of vectors as the heading or the direction to which it is blowing ("wind_ to_ direction") (eastward, southward, etc.). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity"). 2020-09-14
eastward_flood_water_velocity eastward flood water velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Flood water is water that covers land which is normally not covered by water. 2016-05-17
eastward_friction_velocity_in_air eastward friction velocity in air A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Friction velocity is a reference wind velocity derived from the relationship between air density and downward stress and is usually applied at a level close to the surface where stress is assumed to independent of height and approximately proportional to the square of mean velocity. 2021-09-20
eastward_land_ice_velocity eastward land ice velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Land ice velocity is defined as a two-dimensional vector, with no vertical component. "Land ice" means glaciers, ice-caps and ice-sheets resting on bedrock and also includes ice-shelves. 2016-03-08
eastward_mass_flux_of_air eastward mass flux of air 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
eastward_momentum_flux_correction eastward momentum flux correction 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Momentum flux is dimensionally equivalent to stress and pressure. It is a tensor quantity. Flux correction is also called 'flux adjustment'. A positive flux correction is downward i.e. added to the ocean. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
eastward_sea_ice_displacement eastward sea ice displacement "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Displacement" means the change in geospatial position of an object that has moved over time. If possible, the time interval over which the motion took place should be specified using a bounds variable for the time coordinate variable. A displacement can be represented as a vector. Such a vector should however not be interpreted as describing a rectilinear, constant speed motion but merely as an indication that the start point of the vector is found at the tip of the vector after the time interval associated with the displacement variable. A displacement does not prescribe a trajectory. Sea ice displacement can be defined as a two-dimensional vector, with no vertical component. An eastward displacement is the distance calculated from the change in a moving object's longitude between the start and end of the time interval associated with the displacement variable. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
eastward_sea_ice_velocity eastward sea ice velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Sea ice velocity is defined as a two-dimensional vector, with no vertical component. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
eastward_sea_water_velocity eastward sea water velocity A velocity is a vector quantity. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). 2006-09-26
eastward_sea_water_velocity_assuming_no_tide eastward sea water velocity assuming no tide A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). A phrase assuming_ condition indicates that the named quantity is the value which would obtain if all aspects of the system were unaltered except for the assumption of the circumstances specified by the condition. 2010-03-11
eastward_sea_water_velocity_at_sea_floor eastward sea water velocity at sea floor A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The velocity at the sea floor is that adjacent to the ocean bottom, which would be the deepest grid cell in an ocean model and within the benthic boundary layer for measurements. 2019-12-09
eastward_sea_water_velocity_due_to_parameterized_mesoscale_eddies eastward sea water velocity due to parameterized mesoscale eddies "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. Parameterized mesoscale eddies occur on a spatial scale of many tens of kilometres and an evolutionary time of weeks. Reference: James C. McWilliams 2016, Submesoscale currents in the ocean, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, volume 472, issue 2189. DOI: 10.1098/rspa.2016.0117. Parameterized mesoscale eddies are represented in ocean models using schemes such as the Gent-McWilliams scheme. 2017-11-28
eastward_sea_water_velocity_due_to_tides eastward sea water velocity due to tides A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Due to tides" means due to all astronomical gravity changes which manifest as tides. No distinction is made between different tidal components. 2019-12-09
eastward_transformed_eulerian_mean_air_velocity eastward transformed eulerian mean air velocity "Eastward" indicates a vector component which is positive when directed eastward (negative westward). The "Transformed Eulerian Mean" refers to a formulation of the mean equations which incorporates some eddy terms into the definition of the mean, described in Andrews et al (1987): Middle Atmospheric Dynamics. Academic Press. 2018-04-16
eastward_transformed_eulerian_mean_velocity eastward transformed eulerian mean velocity DEPRECATED Eastward indicates a vector component which is positive when directed eastward (negative westward). 2008-06-10
eastward_water_vapor_flux eastward water vapor flux DEPRECATED 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2010-07-26
eastward_water_vapor_flux_in_air eastward water vapor flux in air "Eastward" indicates a vector component which is positive when directed eastward (negative westward). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2010-07-26
eastward_water_vapor_transport_across_unit_distance_in_atmosphere_layer eastward water vapor transport across unit distance in atmosphere layer 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Transport across_ unit_ distance means expressed per unit distance normal to the direction of transport. 2006-09-26
eastward_wind eastward wind 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) 2006-09-26
eastward_wind_shear eastward wind shear 'Eastward' indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) Wind shear is the derivative of wind with respect to height. 2006-09-26
effective_radius_of_cloud_condensed_water_particles_at_cloud_top effective radius of cloud condensed water particles at cloud top The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals,is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. "cloud_ top" refers to the top of the highest cloud. "condensed_ water" means liquid and ice. 2013-06-27
effective_radius_of_cloud_liquid_water_particle effective radius of cloud liquid water particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. 2019-09-17
effective_radius_of_cloud_liquid_water_particle_at_liquid_water_cloud_top effective radius of cloud liquid water particle at liquid water cloud top DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. cloud_ top refers to the top of the highest cloud. 2019-05-14
effective_radius_of_cloud_liquid_water_particles effective radius of cloud liquid water particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
effective_radius_of_cloud_liquid_water_particles_at_liquid_water_cloud_top effective radius of cloud liquid water particles at liquid water cloud top The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. The phrase "cloud_ top" refers to the top of the highest cloud. 2020-03-09
effective_radius_of_convective_cloud_ice_particle effective radius of convective cloud ice particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_ice_particles effective radius of convective cloud ice particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_liquid_water_particle effective radius of convective cloud liquid water particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_liquid_water_particle_at_convective_liquid_water_cloud_top effective radius of convective cloud liquid water particle at convective liquid water cloud top DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. The phrase "convective_ liquid_ water_ cloud_ top" refers to the top of the highest convective liquid water cloud. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_liquid_water_particles effective radius of convective cloud liquid water particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
effective_radius_of_convective_cloud_liquid_water_particles_at_convective_liquid_water_cloud_top effective radius of convective cloud liquid water particles at convective liquid water cloud top The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. The phrase "convective_ liquid_ water_ cloud_ top" refers to the top of the highest convective liquid water cloud. Convective cloud is that produced by the convection schemes in an atmosphere model. "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
effective_radius_of_convective_cloud_rain_particle effective radius of convective cloud rain particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_rain_particles effective radius of convective cloud rain particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_snow_particle effective radius of convective cloud snow particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_convective_cloud_snow_particles effective radius of convective cloud snow particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. Convective cloud is that produced by the convection schemes in an atmosphere model. 2019-05-14
effective_radius_of_stratiform_cloud_graupel_particle effective radius of stratiform cloud graupel particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_graupel_particles effective radius of stratiform cloud graupel particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_ice_particle effective radius of stratiform cloud ice particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_ice_particles effective radius of stratiform cloud ice particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_liquid_water_particle effective radius of stratiform cloud liquid water particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_liquid_water_particle_at_stratiform_liquid_water_cloud_top effective radius of stratiform cloud liquid water particle at stratiform liquid water cloud top DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. The phrase "stratiform_ liquid_ water_ cloud_ top" refers to the top of the highest stratiform liquid water cloud. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_liquid_water_particles effective radius of stratiform cloud liquid water particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
effective_radius_of_stratiform_cloud_liquid_water_particles_at_stratiform_liquid_water_cloud_top effective radius of stratiform cloud liquid water particles at stratiform liquid water cloud top The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. The phrase "stratiform_ liquid_ water_ cloud_ top" refers to the top of the highest stratiform liquid water cloud. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). "Cloud liquid water" refers to the liquid phase of cloud water. A diameter of 0.2 mm has been suggested as an upper limit to the size of drops that shall be regarded as cloud drops; larger drops fall rapidly enough so that only very strong updrafts can sustain them. Any such division is somewhat arbitrary, and active cumulus clouds sometimes contain cloud drops much larger than this. Reference: AMS Glossary http://glossary.ametsoc.org/wiki/Cloud_ drop. 2020-03-09
effective_radius_of_stratiform_cloud_rain_particle effective radius of stratiform cloud rain particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_rain_particles effective radius of stratiform cloud rain particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_snow_particle effective radius of stratiform cloud snow particle DEPRECATED The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
effective_radius_of_stratiform_cloud_snow_particles effective radius of stratiform cloud snow particles The effective radius of a size distribution of particles, such as aerosols, cloud droplets or ice crystals, is the area weighted mean radius of particle size. It is calculated as the ratio of the third to the second moment of the particle size distribution. In an atmosphere model, stratiform cloud is that produced by large-scale convergence (not the convection schemes). 2019-05-14
electrical_mobility_diameter_of_ambient_aerosol_particles electrical mobility diameter of ambient aerosol particles The diameter of an aerosol particle as selected by its electrical mobility. "Aerosol" means the system of suspended liquid or solid particles in air (except cloud droplets) and their carrier gas, the air itself. "Ambient_ aerosol" means that the aerosol is measured or modelled at the ambient state of pressure, temperature and relative humidity that exists in its immediate environment. "Ambient aerosol particles" are aerosol particles that have taken up ambient water through hygroscopic growth. The extent of hygroscopic growth depends on the relative humidity and the composition of the particles. To specify the relative humidity and temperature at which the quantity described by the standard name applies, provide scalar coordinate variables with standard names of "relative_ humidity" and "air_ temperature". 2019-05-14
electrical_mobility_particle_diameter electrical mobility particle diameter DEPRECATED The diameter of an aerosol particle as selected by its electrical mobility. 2019-05-14
electromagnetic_wavelength electromagnetic wavelength DEPRECATED The radiation wavelength can refer to any electromagnetic wave, such as light, heat radiation and radio waves. 2006-09-26
enrichment_of_14C_in_carbon_dioxide_in_air_expressed_as_uppercase_delta_14C enrichment of 14C in carbon dioxide in air expressed as uppercase delta 14C Isotopic enrichment of 14C, often called d14C or delta14C (lower case delta), is used to calculate the fossil fuel contribution to atmospheric carbon dioxide using isotopic ratios of carbon. It is a parameterisation of the 14C/12C isotopic ratio in the sample with respect to the isotopic ratio in a reference standard. It is computed using the formula (((14C/12C)sample / (14C/12C)standard) - 1) * 1000. The quantity called D14C, or Delta14C (upper case delta) is d14C corrected for isotopic fractionation using the 13C/12C ratio as follows: D14C = d14C - 2(dC13 + 25)(1+d14C/1000). If the sample is enriched in 14C relative to the standard, then the data value is positive. Reference: Stuiver, M. and H.A. Polach, 1977, Discussion reporting of 14C data, Radiocarbon, Volume 19, No. 3, 355-363, doi: 10.1017/S0033822200003672. The reference standard used in the calculation of delta14C should be specified by attaching a long_ name attribute to the data variable. "C" means the element carbon and "14C" is the radioactive isotope "carbon-14", having six protons and eight neutrons and used in radiocarbon dating. 2019-03-04
enthalpy_content_of_atmosphere_layer enthalpy content of atmosphere layer 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
equilibrium_line_altitude equilibrium line altitude Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. The equilibrium line is the locus of points on a land ice surface at which ice accumulation balances ice ablation over the year. 2006-09-26
equivalent_potential_temperature equivalent potential temperature DEPRECATED Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. 2020-03-09
equivalent_pressure_of_atmosphere_ozone_content equivalent pressure of atmosphere ozone content 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The equivalent pressure of a particular constituent of the atmosphere is the surface pressure exerted by the weight of that constituent alone. 2006-09-26
equivalent_reflectivity_factor equivalent reflectivity factor "Equivalent reflectivity factor" is the radar reflectivity factor that is calculated from the measured radar return power assuming the target is composed of liquid water droplets whose diameter is less than one tenth of the radar wavelength, i.e., treating the droplets as Rayleigh scatterers. The actual radar reflectivity factor would depend on the size distribution and composition of the particles within the target volume and these are often unknown. 2010-07-26
equivalent_temperature equivalent temperature DEPRECATED 2020-03-09
equivalent_thickness_at_stp_of_atmosphere_o3_content equivalent thickness at stp of atmosphere o3 content DEPRECATED 'stp' means standard temperature (0 degC) and pressure (101325 Pa). 'Content' indicates a quantity per unit area. The 'atmosphere content' of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The equivalent thickness at STP of a particular constituent of the atmosphere is the thickness of the layer that the gas would occupy if it was separated from the other constituents and gathered together at STP. 2006-09-26
equivalent_thickness_at_stp_of_atmosphere_ozone_content equivalent thickness at stp of atmosphere ozone content "stp" means standard temperature (0 degC) and pressure (101325 Pa). "Content" indicates a quantity per unit area. The "atmosphere content" of a quantity refers to the vertical integral from the surface to the top of the atmosphere. For the content between specified levels in the atmosphere, standard names including content_ of_ atmosphere_ layer are used. The equivalent thickness at STP of a particular constituent of the atmosphere is the thickness of the layer that the gas would occupy if it was separated from the other constituents and gathered together at STP. equivalent_ thickness_ at_ stp_ of_ atmosphere_ ozone_ content is usually measured in Dobson Units which are equivalent to 446.2 micromoles m-2 or an equivalent thickness at STP of 10 micrometers. N.B. Data variables containing column content of ozone can be given the standard name of either equivalent_ thickness_ at_ stp_ of_ atmosphere_ ozone_ content or atmosphere_ mole_ content_ of_ ozone. The latter name is recommended for consistency with mole content names for chemical species other than ozone. 2013-01-11
ertel_potential_vorticity ertel potential vorticity The Ertel potential vorticity is the scalar product of the atmospheric absolute vorticity vector and the gradient of potential temperature. It is a conserved quantity in the absence of friction and heat sources [AMS Glossary, http://glossary.ametsoc.org/wiki/Ertel_ potential_ vorticity]. A frequently used simplification of the general Ertel potential vorticity considers the Earth rotation vector to have only a vertical component. Then, only the vertical contribution of the scalar product is calculated. 2020-06-22
fast_soil_pool_carbon_content fast soil pool carbon content DEPRECATED "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_ of_ soil_ layer are used. "Soil carbon" is the organic matter present in soil quantified by the mass of carbon it contains. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. 2018-04-16
fast_soil_pool_mass_content_of_carbon fast soil pool mass content of carbon "Content" indicates a quantity per unit area. The "soil content" of a quantity refers to the vertical integral from the surface down to the bottom of the soil model. For the content between specified levels in the soil, standard names including content_ of_ soil_ layer are used. Soil carbon is returned to the atmosphere as the organic matter decays. The decay process takes varying amounts of time depending on the composition of the organic matter, the temperature and the availability of moisture. A carbon "soil pool" means the carbon contained in organic matter which has a characteristic period over which it decays and releases carbon into the atmosphere. "Fast soil pool" refers to the decay of organic matter in soil with a characteristic period of less than ten years under reference climate conditions of a temperature of 20 degrees Celsius and no water limitations. 2018-04-16
final_air_pressure_of_lifted_parcel final air pressure of lifted parcel Various stability and convective potential indices are calculated by "lifting" a parcel of air: moving it dry adiabatically from a starting height (often the surface) to the Lifting Condensation Level, and then wet adiabatically from there to an ending height (often the top of the data/model/atmosphere). The quantities with standard names original_ air_ pressure_ of_ lifted_ parcel and final_ air_ pressure_ of_ lifted_ parcel are the ambient air pressure at the start and end of lifting, respectively. Air pressure is the force per unit area which would be exerted when the moving gas molecules of which the air is composed strike a theoretical surface of any orientation. 2017-07-24
fire_area fire area "X_ area" means the horizontal area occupied by X within the grid cell. The extent of an individual grid cell is defined by the horizontal coordinates and any associated coordinate bounds or by a string valued auxiliary coordinate variable with a standard name of "region". "Fire area" means the area of detected biomass fire. 2017-02-21
fire_radiative_power fire radiative power The product of the irradiance (the power per unit area) of a biomass fire and the corresponding fire area. A data variable containing the area affected by fire should be given the standard name fire_ area. 2015-07-08
fire_temperature fire temperature The overall temperature of a fire area due to contributions from smoldering and flaming biomass. A data variable containing the area affected by fire should be given the standard name fire_ area. 2015-07-08
flat_line_test_quality_flag flat line test quality flag A quality flag that reports the result of the Flat Line test, which checks for consecutively repeated values within a tolerance. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. There are standard names for other specific quality tests which take the form of X_ quality_ flag. Quality information that does not match any of the specific quantities should be given the more general standard name of quality_ flag. 2020-03-09
floating_ice_sheet_area_fraction floating ice sheet area fraction DEPRECATED "X_ area_ fraction" means the fraction of horizontal area occupied by X. A "floating ice sheet", sometimes called an "ice shelf", indicates where the ice sheet is flowing over sea water. 2017-02-21
floating_ice_shelf_area floating ice shelf area "X_ area" means the horizontal area occupied by X within the grid cell. The extent of an individual grid cell is defined by the horizontal coordinates and any associated coordinate bounds or by a string valued auxiliary coordinate variable with a standard name of "region". A "floating ice shelf", sometimes called a "floating ice sheet", indicates where an ice sheet extending from a land area flows over sea water. 2017-02-21
floating_ice_shelf_area_fraction floating ice shelf area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. A "floating ice shelf", sometimes called a "floating ice sheet", indicates where an ice sheet extending from a land area flows over sea water. 2019-05-14
floating_ice_thickness floating ice thickness "Floating ice" means any ice that is floating on water, e.g. on a sea or lake surface. "Thickness" means the vertical extent of the ice. 2008-11-11
flood_water_duration_above_threshold flood water duration above threshold The quantity with standard name flood_ water_ duration_ above_ threshold is the time elapsed between the instant when the flood depth first rises above a given threshold until the time falls below the same threshold for the last time at a given point in space. If a threshold is supplied, it should be specified by associating a coordinate variable or scalar coordinate variable with the data variable and giving the coordinate variable a standard name of flood_ water_ thickness. The values of the coordinate variable are the threshold values for the corresponding subarrays of the data variable. If no threshold is specified, its value is taken to be zero. Flood water is water that covers land which is normally not covered by water. 2016-05-17
flood_water_speed flood water speed Speed is the magnitude of velocity. Flood water is water that covers land which is normally not covered by water. 2016-05-17
flood_water_thickness flood water thickness The flood_ water_ thickness is the vertical distance between the surface of the flood water and the surface of the solid ground, as measured at a given point in space. The standard name ground_ level_ altitude is used for a data variable giving the geometric height of the ground surface above the geoid. "Flood water" is water that covers land which is normally not covered by water. 2016-05-17
fog_area_fraction fog area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. Fog means water droplets or minute ice crystals close to the surface which reduce visibility in air to less than 1000m. 2019-05-14
forecast_period forecast period Forecast period is the time interval between the forecast reference time and the validity time. A period is an interval of time, or the time-period of an oscillation. 2006-09-26
forecast_reference_time forecast reference time The forecast reference time in NWP is the 'data time', the time of the analysis from which the forecast was made. It is not the time for which the forecast is valid; the standard name of time should be used for that time. 2006-09-26
fraction_of_surface_downwelling_photosynthetic_radiative_flux_absorbed_by_vegetation fraction of surface downwelling photosynthetic radiative flux absorbed by vegetation Downwelling radiation is radiation from above. It does not mean "net downward". The sign convention is that "upwelling" is positive upwards and "downwelling" is positive downwards. The surface called "surface" means the lower boundary of the atmosphere. The quantity with standard name fraction_ of_ surface_ downwelling_ photosynthetic_ radiative_ flux_ absorbed_ by_ vegetation, often called Fraction of Absorbed Photosynthetically Active Radiation (FAPAR), is the fraction of incoming solar radiation in the photosynthetically active radiation spectral region that is absorbed by a vegetation canopy. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of "radiation_ wavelength". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. "Vegetation" means any plants e.g. trees, shrubs, grass. The term "plants" refers to the kingdom of plants in the modern classification which excludes fungi. Plants are autotrophs i.e. "producers" of biomass using carbon obtained from carbon dioxide. 2018-07-03
fraction_of_time_with_sea_ice_area_fraction_above_threshold fraction of time with sea ice area fraction above threshold "Fraction of time" is the fraction of a time period defined by the bounds of the time coordinate variable for which a characteristic of interest exists. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. Sea ice area fraction is area of the sea surface occupied by sea ice. The area threshold value must be specified by supplying a coordinate variable or scalar coordinate variable with the standard name of sea_ ice_ area_ fraction. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2019-05-14
fractional_saturation_of_oxygen_in_sea_water fractional saturation of oxygen in sea water Fractional saturation is the ratio of some measure of concentration to the saturated value of the same quantity. 2006-09-26
freezing_level_altitude freezing level altitude Altitude is the (geometric) height above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2006-09-26
freezing_temperature_of_sea_water freezing temperature of sea water 2006-09-26
frequency_of_lightning_flashes_per_unit_area frequency of lightning flashes per unit area A lightning flash is a compound event, usually consisting of several discharges. Frequency is the number of oscillations of a wave, or the number of occurrences of an event, per unit time. 2018-05-29
frozen_water_content_of_soil_layer frozen water content of soil layer 'frozen_ water' means ice. 'Content' indicates a quantity per unit area. 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Quantities defined for a soil layer must have a vertical coordinate variable with boundaries indicating the extent of the layer(s). 2006-09-26
fugacity_of_carbon_dioxide_in_sea_water fugacity of carbon dioxide in sea water The fugacity is the measured pressure (or partial pressure) of a real gas corrected for the intermolecular forces of that gas, which allows that corrected quantity to be treated like the pressure of an ideal gas in the ideal gas equation PV = nRT. The partial pressure of a dissolved gas in sea water is the partial pressure in air with which it would be in equilibrium. The partial pressure of a gaseous constituent of air is the pressure that it would exert if all other gaseous constituents were removed, assuming the volume, the temperature, and its number of moles remain unchanged. The chemical formula for carbon dioxide is CO2. 2018-10-15
gap_test_quality_flag gap test quality flag A quality flag that reports the result of the Timing/Gap test, which checks that data have been received within the expected time window and have the correct time stamp. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. There are standard names for other specific quality tests which take the form of X_ quality_ flag. Quality information that does not match any of the specific quantities should be given the more general standard name of quality_ flag. 2020-03-09
geoid_height_above_reference_ellipsoid geoid height above reference ellipsoid The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. (The volume enclosed between the geoid and the sea floor equals the mean volume of water in the ocean). In an ocean GCM the geoid is the surface of zero depth, or the rigid lid if the model uses that approximation. A reference ellipsoid is a regular mathematical figure that approximates the irregular shape of the geoid. A number of reference ellipsoids are defined for use in the field of geodesy. To specify which reference ellipsoid is being used, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2017-07-24
geopotential geopotential Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. 2006-09-26
geopotential_height geopotential height Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. 2006-09-26
geopotential_height_anomaly geopotential height anomaly 'anomaly' means difference from climatology. Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name height, which is relative to the surface. 2006-09-26
geopotential_height_at_cloud_top geopotential height at cloud top Cloud_ top refers to the top of the highest cloud. Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name "height", which is relative to the surface. 2015-07-08
geopotential_height_at_volcanic_ash_cloud_top geopotential height at volcanic ash cloud top Geopotential is the sum of the specific gravitational potential energy relative to the geoid and the specific centripetal potential energy. Geopotential height is the geopotential divided by the standard acceleration due to gravity. It is numerically similar to the altitude (or geometric height) and not to the quantity with standard name "height", which is relative to the surface. "Volcanic_ ash" means the fine-grained products of explosive volcanic eruptions, such as minerals or crystals, older fragmented rock (e.g. andesite), and glass. Particles within a volcanic ash cloud have diameters less than 2 mm. "Volcanic_ ash" does not include non-volcanic dust. 2013-11-08
geostrophic_eastward_sea_water_velocity geostrophic eastward sea water velocity A velocity is a vector quantity. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Geostrophic" indicates that geostrophic balance is assumed, i.e. that the pressure gradient force and the Coriolis force are balanced and the large scale fluid flow is parallel to the isobars. 2017-02-21
geostrophic_eastward_wind geostrophic eastward wind "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) "Geostrophic" indicates that geostrophic balance is assumed, i.e. that the pressure gradient force and the Coriolis force are balanced and the large scale fluid flow is parallel to the isobars. 2017-02-21
geostrophic_northward_sea_water_velocity geostrophic northward sea water velocity A velocity is a vector quantity. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Geostrophic" indicates that geostrophic balance is assumed, i.e. that the pressure gradient force and the Coriolis force are balanced and the large scale fluid flow is parallel to the isobars. 2017-02-21
geostrophic_northward_wind geostrophic northward wind "Northward" indicates a vector component which is positive when directed northward (negative southward). Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) "Geostrophic" indicates that geostrophic balance is assumed, i.e. that the pressure gradient force and the Coriolis force are balanced and the large scale fluid flow is parallel to the isobars. 2017-02-21
global_average_sea_level_change global average sea level change Global average sea level change is due to change in volume of the water in the ocean, caused by mass and/or density change, or to change in the volume of the ocean basins, caused by tectonics etc. It is sometimes called "eustatic", which is a term that also has other definitions. It differs from the change in the global average sea surface height relative to the centre of the Earth by the global average vertical movement of the ocean floor. Zero sea level change is an arbitrary level. Because global average sea level change quantifies the change in volume of the world ocean, it is not calculated necessarily by considering local changes in mean sea level. 2017-07-24
global_average_steric_sea_level_change global average steric sea level change Global average steric sea level change is caused by changes in sea water density due to changes in temperature (thermosteric) and salinity (halosteric). This in turn results in a change in volume of the world ocean. Zero sea level change is an arbitrary level. Because global average sea level change quantifies the change in volume of the world ocean, it is not calculated necessarily by considering local changes in mean sea level. 2017-07-24
global_average_thermosteric_sea_level_change global average thermosteric sea level change Global average thermosteric sea level change is the part caused by change in density due to change in temperature i.e. thermal expansion. This in turn results in a change in volume of the world ocean. Zero sea level change is an arbitrary level. Because global average sea level change quantifies the change in volume of the world ocean, it is not calculated necessarily by considering local changes in mean sea level. 2017-07-24
graupel_and_hail_fall_amount graupel and hail fall amount "Amount" means mass per unit area. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except when the size convention that hail must have a diameter greater than 5 mm is adopted. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. For models that do distinguish between them, separate standard names for hail and graupel are available. 2018-05-15
graupel_and_hail_fall_flux graupel and hail fall flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except when the size convention that hail must have a diameter greater than 5 mm is adopted. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. For models that do distinguish between them, separate standard names for hail and graupel are available. 2018-05-15
graupel_fall_amount graupel fall amount "Amount" means mass per unit area. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except for the size convention that hail must have a diameter greater than 5 mm. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. 2017-11-28
graupel_fall_flux graupel fall flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Graupel consists of heavily rimed snow particles, often called snow pellets; often indistinguishable from very small soft hail except when the size convention that hail must have a diameter greater than 5 mm is adopted. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Graupel. There are also separate standard names for hail. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. 2018-05-15
grid_eastward_wind grid eastward wind DEPRECATED 'x' indicates a vector component along the grid x-axis, when this is not true longitude, positive with increasing x. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) 2006-09-26
grid_latitude grid latitude Latitude is positive northward; its units of degree_ north (or equivalent) indicate this explicitly. In a latitude-longitude system defined with respect to a rotated North Pole, the standard name of grid_ latitude should be used instead of latitude. Grid latitude is positive in the grid-northward direction, but its units should be plain degree. 2006-09-26
grid_longitude grid longitude Longitude is positive eastward; its units of degree_ east (or equivalent) indicate this explicitly. In a latitude-longitude system defined with respect to a rotated North Pole, the standard name of grid_ longitude should be used instead of longitude. Grid longitude is positive in the grid-eastward direction, but its units should be plain degree. 2006-09-26
grid_northward_wind grid northward wind DEPRECATED 'y' indicates a vector component along the grid y-axis, when this is not true latitude, positive with increasing y. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name upward_ air_ velocity.) 2006-09-26
gross_primary_productivity_of_biomass_expressed_as_13C gross primary productivity of biomass expressed as 13C "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Gross primary production is the rate of synthesis of biomass from inorganic precursors by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton. The producers also respire some of this biomass and the difference is "net_ primary_ production". "Productivity" means production per unit area. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "C" means the element carbon and "13C" is the stable isotope "carbon-13", having six protons and seven neutrons. 2018-05-15
gross_primary_productivity_of_biomass_expressed_as_14C gross primary productivity of biomass expressed as 14C "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Gross primary production is the rate of synthesis of biomass from inorganic precursors by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton. The producers also respire some of this biomass and the difference is "net_ primary_ production". "Productivity" means production per unit area. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. "C" means the element carbon and "14C" is the radioactive isotope "carbon-14", having six protons and eight neutrons and used in radiocarbon dating. 2018-05-15
gross_primary_productivity_of_biomass_expressed_as_carbon gross primary productivity of biomass expressed as carbon "Production of carbon" means the production of biomass expressed as the mass of carbon which it contains. Gross primary production is the rate of synthesis of biomass from inorganic precursors by autotrophs ("producers"), for example, photosynthesis in plants or phytoplankton. The producers also respire some of this biomass and the difference is "net_ primary_ production". "Productivity" means production per unit area. The phrase "expressed_ as" is used in the construction A_ expressed_ as_ B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A. 2013-11-28
gross_primary_productivity_of_carbon gross primary productivity of carbon DEPRECATED Gross primary productivity is the rate of synthesis of biomass per unit area from inorganic precursors by autotrophs, especially by photosynthesising plants using sunlight for energy. The producers also respire some of this biomass and the difference is net_ primary_ productivity. "Productivity of carbon" refers to the production of biomass expressed as the mass of carbon which it contains. "Productivity" means production per unit area. 2013-11-28
gross_range_test_quality_flag gross range test quality flag A quality flag that reports the result of the Gross Range test, which checks that values are within reasonable range bounds. The linkage between the data variable and this variable is achieved using the ancillary_ variables attribute. There are standard names for other specific quality tests which take the form of X_ quality_ flag. Quality information that does not match any of the specific quantities should be given the more general standard name of quality_ flag. 2020-03-09
gross_rate_of_decrease_in_area_fraction gross rate of decrease in area fraction The "gross rate of decrease in area fraction" is the fraction of a grid cell that transitions from a given area type per unit time, for example, as a result of land use changes. The quantity described by this standard name is a gross decrease because it includes only land where the use transitions away from the given area type and excludes land that transitions to that area type during the same period. The area type should be specified using a coordinate of scalar coordinate variable with standard name area_ type. There is also a standard name for gross_ rate_ of_ increase_ in_ area_ fraction. "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area 2019-05-14
gross_rate_of_increase_in_area_fraction gross rate of increase in area fraction The "rate of increase in area fraction" is the fraction of a grid cell that transitions to a given area type per unit time, for example, as a result of land use changes. The quantity described by this standard name is a gross increase because it includes only land where the use transitions to the given area type and excludes land that transitions away from that area type during the same period. The area type should be specified using a coordinate or scalar coordinate variable with standard name area_ type. There is also a standard name for gross_ rate_ of_ decrease_ in_ area_ fraction. "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. 2019-05-14
ground_level_altitude ground level altitude The ground_ level_ altitude is the geometric height of the upper boundary of the solid Earth above the geoid, which is the reference geopotential surface. The geoid is similar to mean sea level. 2016-05-17
grounded_ice_sheet_area grounded ice sheet area "X_ area" means the horizontal area occupied by X within the grid cell. The extent of an individual grid cell is defined by the horizontal coordinates and any associated coordinate bounds or by a string valued auxiliary coordinate variable with a standard name of "region". "Grounded ice sheet" indicates where the ice sheet rests over bedrock and is thus grounded. It excludes ice-caps, glaciers and floating ice shelves. 2017-02-21
grounded_ice_sheet_area_fraction grounded ice sheet area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Grounded ice sheet" indicates where the ice sheet rests over bedrock and is thus grounded. It excludes ice-caps, glaciers and floating ice shelves. 2019-05-14
growth_limitation_of_calcareous_phytoplankton_due_to_solar_irradiance growth limitation of calcareous phytoplankton due to solar irradiance "Calcareous phytoplankton" are phytoplankton that produce calcite. Calcite is a mineral that is a polymorph of calcium carbonate. The chemical formula of calcite is CaCO3. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. 2016-11-15
growth_limitation_of_diatoms_due_to_solar_irradiance growth limitation of diatoms due to solar irradiance Diatoms are phytoplankton with an external skeleton made of silica. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. 2016-11-15
growth_limitation_of_diazotrophic_phytoplankton_due_to_solar_irradiance growth limitation of diazotrophic phytoplankton due to solar irradiance "Growth limitation due to solar irradiance" means the ratio of the growth rate of a biological population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. Diazotrophic phytoplankton are phytoplankton (predominantly from Phylum Cyanobacteria) that are able to fix molecular nitrogen (gas or solute) in addition to nitrate and ammonium. 2020-03-09
growth_limitation_of_diazotrophs_due_to_solar_irradiance growth limitation of diazotrophs due to solar irradiance DEPRECATED In ocean modelling, diazotrophs are phytoplankton of the phylum cyanobacteria distinct from other phytoplankton groups in their ability to fix nitrogen gas in addition to nitrate and ammonium. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. 2020-03-09
growth_limitation_of_miscellaneous_phytoplankton_due_to_solar_irradiance growth limitation of miscellaneous phytoplankton due to solar irradiance Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. "Miscellaneous phytoplankton" are all those phytoplankton that are not diatoms, diazotrophs, calcareous phytoplankton, picophytoplankton or other separately named components of the phytoplankton population. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. 2016-11-15
growth_limitation_of_picophytoplankton_due_to_solar_irradiance growth limitation of picophytoplankton due to solar irradiance Picophytoplankton are phytoplankton of less than 2 micrometers in size. Phytoplankton are algae that grow where there is sufficient light to support photosynthesis. The specification of a physical process by the phrase "due_ to_ " process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Irradiance" means the power per unit area (called radiative flux in other standard names), the area being normal to the direction of flow of the radiant energy. Solar irradiance is essential to the photosynthesis reaction and its presence promotes the growth of phytoplankton populations. "Growth limitation due to solar irradiance" means the ratio of the growth rate of a species population in the environment (where the amount of sunlight reaching a location may be limited) to the theoretical growth rate if there were no such limit on solar irradiance. 2016-11-15
hail_fall_amount hail fall amount "Amount" means mass per unit area. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. For diameters of less than 5 mm standard names for "graupel" should be used. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. 2018-05-15
hail_fall_flux hail fall flux In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. For diameters of less than 5 mm standard names for "graupel" should be used. Standard names for "graupel_ and_ hail" should be used to describe data produced by models that do not distinguish between hail and graupel. 2018-05-15
halosteric_change_in_mean_sea_level halosteric change in mean sea level Halosteric sea level change is the part caused by change in sea water density due to change in salinity. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. Zero mean sea level change is an arbitrary level. The sum of the quantities with standard names thermosteric_ change_ in_ mean_ sea_ level and halosteric_ change_ in_ mean_ sea_ level has the standard name steric_ change_ in_ mean_ sea_ level. 2017-06-26
halosteric_change_in_sea_surface_height halosteric change in sea surface height "Sea surface height" is a time-varying quantity. The halosteric change in sea surface height is the change in height that a water column of standard practical salinity S=35.0 would undergo when its salinity is changed to the observed value. The sum of the quantities with standard names thermosteric_ change_ in_ sea_ surface_ height and halosteric_ change_ in_ sea_ surface_ height is the total steric change in the water column height, which has the standard name of steric_ change_ in_ sea_ surface_ height. 2017-06-26
harmonic_period harmonic period A period is an interval of time, or the time-period of an oscillation. 2013-11-08
heat_flux_correction heat flux correction Flux correction is also called 'flux adjustment'. A positive flux correction is downward i.e. added to the ocean. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2006-09-26
heat_flux_into_sea_water_due_to_freezing_of_frazil_ice heat flux into sea water due to freezing of frazil ice In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Frazil" consists of needle like crystals of ice, typically between three and four millimeters in diameter, which form as sea water begins to freeze. Salt is expelled during the freezing process and frazil ice consists of nearly pure fresh water. 2010-10-11
heat_flux_into_sea_water_due_to_iceberg_thermodynamics heat flux into sea water due to iceberg thermodynamics In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. " Iceberg thermodynamics" refers to the addition or subtraction of mass due to surface and basal fluxes, i.e., due to melting, sublimation and fusion. 2009-07-06
heat_flux_into_sea_water_due_to_newtonian_relaxation heat flux into sea water due to newtonian relaxation The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. The heat_ flux_ into_ sea_ water_ due_ to_ newtonian_ relaxation is the heat flux resulting from the Newtonian relaxation of the sea surface temperature. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2008-10-21
heat_flux_into_sea_water_due_to_sea_ice_thermodynamics heat flux into sea water due to sea ice thermodynamics In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Sea ice thermodynamics" refers to the addition or subtraction of mass due to surface and basal fluxes, i.e., due to melting, sublimation and fusion. "Sea ice" means all ice floating in the sea which has formed from freezing sea water, rather than by other processes such as calving of land ice to form icebergs. 2018-07-03
heat_flux_into_sea_water_due_to_snow_thermodynamics heat flux into sea water due to snow thermodynamics In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. "Snow thermodynamics" refers to the addition or subtraction of mass due to surface and basal fluxes, i.e., due to melting, sublimation and fusion. 2009-07-06
heat_index_of_air_temperature heat index of air temperature Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The quantity with standard name heat_ index_ of_ air_ temperature is the perceived air temperature when relative humidity is taken into consideration (which makes it feel hotter than the actual air temperature). Heat index is only defined when the ambient air temperature is at or above 299.817 K. References: https://www.weather.gov/safety/heat-index; WMO codes registry entry http://codes.wmo.int/grib2/codeflag/4.2/_ 0-0-12. 2020-09-14
height height Height is the vertical distance above the surface. 2006-09-26
height_above_geopotential_datum height above geopotential datum "Height_ above_ X" means the vertical distance above the named surface X. The "geopotential datum" is any estimated surface of constant geopotential used as a datum i.e. a reference level; for the geoid as a datum, specific standard names are available. To specify which geoid or geopotential datum is being used as a reference level, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2017-07-24
height_above_geopotential_datum_at_top_of_atmosphere_model height above geopotential datum at top of atmosphere model "Height_ above_ X" means the vertical distance above the named surface X. The "geopotential datum" is any estimated surface of constant geopotential used as a datum i.e. a reference level; for the geoid as a datum, specific standard names are available. To specify which geoid or geopotential datum is being used as a reference level, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. "Top of atmosphere model" means the upper boundary of the top layer of an atmosphere model. 2017-07-24
height_above_mean_sea_level height above mean sea level "Height_ above_ X" means the vertical distance above the named surface X. "Mean sea level" means the time mean of sea surface elevation at a given location over an arbitrary period sufficient to eliminate the tidal signals. 2017-07-24
height_above_reference_ellipsoid height above reference ellipsoid "Height_ above_ X" means the vertical distance above the named surface X. A reference ellipsoid is a mathematical figure that approximates the geoid. The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. The ellipsoid is an approximation because the geoid is an irregular shape. A number of reference ellipsoids are defined for use in the field of geodesy. To specify which reference ellipsoid is being used, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2017-07-24
height_above_sea_floor height above sea floor 2006-09-26
height_at_cloud_top height at cloud top cloud_ top refers to the top of the highest cloud. Height is the vertical distance above the surface. 2006-09-26
height_at_effective_cloud_top_defined_by_infrared_radiation height at effective cloud top defined by infrared radiation The "effective cloud top defined by infrared radiation" is (approximately) the geometric height above the surface that is one optical depth at infrared wavelengths (in the region of 11 micrometers) below the cloud top that would be detected by visible and lidar techniques. Reference: Minnis, P. et al 2011 CERES Edition-2 Cloud Property Retrievals Using TRMM VIRS and Terra and Aqua MODIS Data x2014; Part I: Algorithms IEEE Transactions on Geoscience and Remote Sensing, 49(11), 4374-4400. doi: http://dx.doi.org/10.1109/TGRS.2011.2144601. 2016-05-17
heterotrophic_respiration_carbon_flux heterotrophic respiration carbon flux DEPRECATED 'Respiration carbon' refers to the rate at which biomass is respired expressed as the mass of carbon which it contains. Heterotrophic respiration is respiration by heterotrophs ('consumers'), which are organisms (including animals and decomposers) that consume other organisms or dead organic material, rather than synthesising organic material from inorganic precursors using energy from the environment (especially sunlight) as autotrophs ('producers') do. Heterotrophic respiration goes on both above and within the soil. In accordance with common usage in geophysical disciplines, 'flux' implies per unit area, called 'flux density' in physics. 2018-04-16
high_type_cloud_area_fraction high type cloud area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. High type clouds are: Cirrus, Cirrostratus, Cirrocumulus. X_ type_ cloud_ area_ fraction is generally determined on the basis of cloud type, though Numerical Weather Prediction (NWP) models often calculate them based on the vertical location of the cloud. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_ area_ fraction_ in_ atmosphere_ layer" are used. Standard names referring only to "cloud_ area_ fraction" should be used for quantities for the whole atmosphere column. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
histogram_of_backscattering_ratio_in_air_over_height_above_reference_ellipsoid histogram of backscattering ratio in air over height above reference ellipsoid Scattering of radiation is its deflection from its incident path without loss of energy. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_ angle exceeding pi/2 radians. A scattering_ angle should not be specified with this quantity. "Backscattering ratio" is the ratio of the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air to the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air_ assuming_ no_ aerosol_ or_ cloud. "histogram_ of_ X[_ over_ Z]" means histogram (i.e. number of counts for each range of X) of variations (over Z) of X. The data variable should have an axis for X. A reference ellipsoid is a regular mathematical figure that approximates the irregular shape of the geoid. A number of reference ellipsoids are defined for use in the field of geodesy. The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. To specify which reference ellipsoid is being used, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2019-05-14
histogram_of_backscattering_ratio_over_height_above_reference_ellipsoid histogram of backscattering ratio over height above reference ellipsoid DEPRECATED Scattering of radiation is its deflection from its incident path without loss of energy. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_ angle exceeding pi/2 radians. A scattering_ angle should not be specified with this quantity. "Backscattering ratio" is the ratio of the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air to the quantity with standard name volume_ attenuated_ backwards_ scattering_ function_ in_ air_ assuming_ no_ aerosol_ or_ cloud. "histogram_ of_ X[_ over_ Z]" means histogram (i.e. number of counts for each range of X) of variations (over Z) of X. The data variable should have an axis for X. A reference ellipsoid is a regular mathematical figure that approximates the irregular shape of the geoid. A number of reference ellipsoids are defined for use in the field of geodesy. The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. To specify which reference ellipsoid is being used, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2019-05-14
histogram_of_equivalent_reflectivity_factor_over_height_above_reference_ellipsoid histogram of equivalent reflectivity factor over height above reference ellipsoid "Equivalent reflectivity factor" is the radar reflectivity factor that is calculated from the measured radar return power assuming the target is composed of liquid water droplets whose diameter is less than one tenth of the radar wavelength, i.e., treating the droplets as Rayleigh scatterers. The actual radar reflectivity factor would depend on the size distribution and composition of the particles within the target volume and these are often unknown. "histogram_ of_ X[_ over_ Z]" means histogram (i.e. number of counts for each range of X) of variations (over Z) of X. The data variable should have an axis for X. A reference ellipsoid is a regular mathematical figure that approximates the irregular shape of the geoid. A number of reference ellipsoids are defined for use in the field of geodesy. The geoid is a surface of constant geopotential with which mean sea level would coincide if the ocean were at rest. To specify which reference ellipsoid is being used, a grid_ mapping variable should be attached to the data variable as described in Chapter 5.6 of the CF Convention. 2017-07-24
horizontal_atmosphere_dry_energy_transport horizontal atmosphere dry energy transport Dry energy is the sum of dry static energy and kinetic energy. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
horizontal_dry_energy_transport_in_atmosphere_layer horizontal dry energy transport in atmosphere layer 'Layer' means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Dry energy is the sum of dry static energy and kinetic energy. Dry static energy is the sum of enthalpy and potential energy (itself the sum of gravitational and centripetal potential energy). Enthalpy can be written either as (1) CpT, where Cp is heat capacity at constant pressure, T is absolute temperature, or (2) U+pV, where U is internal energy, p is pressure and V is volume. 2006-09-26
humidity_mixing_ratio humidity mixing ratio Humidity mixing ratio of a parcel of moist air is the ratio of the mass of water vapor to the mass of dry air. 2006-09-26
ice_cloud_area_fraction ice cloud area fraction "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. The cloud area fraction is for the whole atmosphere column, as seen from the surface or the top of the atmosphere. For the cloud area fraction between specified levels in the atmosphere, standard names including "cloud_ area_ fraction_ in_ atmosphere_ layer" are used. Standard names also exist for high, medium and low cloud types. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
ice_cloud_area_fraction_in_atmosphere_layer ice cloud area fraction in atmosphere layer "Area fraction" is the fraction of a grid cell's horizontal area that has some characteristic of interest. It is evaluated as the area of interest divided by the grid cell area. It may be expressed as a fraction, a percentage, or any other dimensionless representation of a fraction. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be "model_ level_ number", but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Standard names also exist for high, medium and low cloud types. Standard names referring only to "cloud_ area_ fraction" should be used for quantities for the whole atmosphere column. Cloud area fraction is also called "cloud amount" and "cloud cover". 2019-05-14
ice_volume_in_frozen_ground_in_excess_of_pore_volume_in_unfrozen_ground_expressed_as_fraction_of_frozen_ground_volume ice volume in frozen ground in excess of pore volume in unfrozen ground expressed as fraction of frozen ground volume ice_ volume_ in_ frozen_ ground_ in_ excess_ of_ pore_ volume_ in_ unfrozen_ ground_ expressed_ as_ fraction_ of_ frozen_ ground_ volume represents the fractional amount of "excess ice" in frozen ground. Excess ice is the volume of ice in the ground which exceeds the total pore volume that the ground would have under natural unfrozen conditions. Due to the presence of ground ice, the total water content of a frozen soil may exceed that corresponding to its normally consolidated state when unfrozen. As a result, upon thawing, a soil containing excess ice will settle under its own weight until it attains its consolidated state. Reference: van Everdingen, R. O. editor 1998: Multi-language glossary of permafrost and related ground ice terms. International Permafrost Association. 2021-09-20
incoming_water_volume_transport_along_river_channel incoming water volume transport along river channel "Water" means water in all phases. "River" refers to water in the fluvial system (stream and floodplain). 2018-07-10
indicative_error_from_multibeam_acoustic_doppler_velocity_profiler_in_sea_water indicative error from multibeam acoustic doppler velocity profiler in sea water Sea water velocity is a vector quantity that is the speed at which water travels in a specified direction. The "indicative error" is an estimate of the quality of a sea water velocity profile measured using an ADCP (acoustic doppler current profiler). It is determined by the difference between the vertical velocity calculated from two 3-beam solutions. The parameter is frequently referred to as the "error velocity". 2021-09-20
institution institution An auxiliary coordinate variable with a standard name of institution contains string values which specify where the original data, with which the coordinate variable is associated, were produced. The use of institution as the standard name for an auxiliary coordinate variable permits the aggregation of data from multiple institutions within a single data file. 2015-12-03
integral_of_air_temperature_deficit_wrt_time integral of air temperature deficit wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The air temperature deficit is the air temperature threshold minus the air temperature, where only positive values are included in the integral. Its integral with respect to time is often called after its units of "degree-days". The air_ temperature variable, which is the data variable of the integral should have a scalar coordinate variable or a size-one coordinate variable with the standard name of air_ temperature_ threshold, to indicate the threshold. 2017-11-28
integral_of_air_temperature_excess_wrt_time integral of air temperature excess wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The air temperature excess is the air temperature minus the air temperature threshold, where only positive values are included in the integral. Its integral with respect to time is often called after its units of "degree-days". The air_ temperature variable, which is the data variable of the integral should have a scalar coordinate variable or a size-one coordinate variable with the standard name of air_ temperature_ threshold, to indicate the threshold. 2017-11-28
integral_of_product_of_eastward_wind_and_specific_humidity_wrt_height integral of product of eastward wind and specific humidity wrt height DEPRECATED The phrase "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". Height is the vertical distance above the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity".) "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Specific humidity is the mass fraction of water vapor in (moist) air. 2017-11-28
integral_of_product_of_northward_wind_and_specific_humidity_wrt_height integral of product of northward wind and specific humidity wrt height DEPRECATED The phrase "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". Height is the vertical distance above the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity".) "Northward" indicates a vector component which is positive when directed northward (negative southward). Specific humidity is the mass fraction of water vapor in (moist) air. 2017-11-28
integral_of_sea_ice_temperature_wrt_depth_expressed_as_heat_content integral of sea ice temperature wrt depth expressed as heat content DEPRECATED "Content" indicates a quantity per unit area. Depth is the vertical distance below the surface. The quantity with standard name integral_ of_ sea_ ice_ temperature_ wrt_ depth_ expressed_ as_ heat_ content is calculated relative to the heat content of ice at zero degrees Celsius, which is assumed to have a heat content of zero Joules. "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. 2017-11-28
integral_of_sea_water_potential_temperature_wrt_depth_expressed_as_heat_content integral of sea water potential temperature wrt depth expressed as heat content DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. "expressed_ as_ heat_ content" means that this quantity is calculated as the (assumed constant) specific heat capacity times density of sea water multiplied by the integral, over the specified layer of the ocean, of the sea water potential temperature wrt depth. 2017-11-28
integral_of_sea_water_practical_salinity_wrt_depth integral of sea water practical salinity wrt depth DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. Depth is the vertical distance below the surface. Practical Salinity, S_ P, is a determination of the salinity of sea water, based on its electrical conductance. The measured conductance, corrected for temperature and pressure, is compared to the conductance of a standard potassium chloride solution, producing a value on the Practical Salinity Scale of 1978 (PSS-78). This name should not be used to describe salinity observations made before 1978, or ones not based on conductance measurements. Conversion of Practical Salinity to other precisely defined salinity measures should use the appropriate formulas specified by TEOS-10. Other standard names for precisely defined salinity quantities are sea_ water_ absolute_ salinity (S_ A); sea_ water_ preformed_ salinity (S_ *), sea_ water_ reference_ salinity (S_ R); sea_ water_ cox_ salinity (S_ C), used for salinity observations between 1967 and 1977; and sea_ water_ knudsen_ salinity (S_ K), used for salinity observations between 1901 and 1966. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_ water_ salinity. Reference: www.teos-10.org; Lewis, 1980 doi:10.1109/JOE.1980.1145448. 2017-11-28
integral_of_sea_water_temperature_wrt_depth_in_ocean_layer integral of sea water temperature wrt depth in ocean layer DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Depth is the vertical distance below the surface. Sea water temperature is the in situ temperature of the sea water. For observed data, depending on the period during which the observation was made, the measured in situ temperature was recorded against standard "scales". These historical scales include the International Practical Temperature Scale of 1948 (IPTS-48; 1948-1967), the International Practical Temperature Scale of 1968 (IPTS-68, Barber, 1969; 1968-1989) and the International Temperature Scale of 1990 (ITS-90, Saunders 1990; 1990 onwards). Conversion of data between these scales follows t68 = t48 - (4.4 x 10e-6) * t48(100 - t - 48); t90 = 0.99976 * t68. Observations made prior to 1948 (IPTS-48) have not been documented and therefore a conversion cannot be certain. Differences between t90 and t68 can be up to 0.01 at temperatures of 40 C and above; differences of 0.002-0.007 occur across the standard range of ocean temperatures (-10 - 30 C). The International Equation of State of Seawater 1980 (EOS-80, UNESCO, 1981) and the Practical Salinity Scale (PSS-78) were both based on IPTS-68, while the Thermodynamic Equation of Seawater 2010 (TEOS-10) is based on ITS-90. References: Barber, 1969, doi: 10.1088/0026-1394/5/2/001; UNESCO, 1981; Saunders, 1990, WOCE Newsletter, 10, September 1990. 2017-11-28
integral_of_surface_downward_eastward_stress_wrt_time integral of surface downward eastward stress wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Eastward" indicates a vector component which is positive when directed eastward (negative westward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward eastward" indicates the ZX component of a tensor. A downward eastward stress is a downward flux of eastward momentum, which accelerates the lower medium eastward and the upper medium westward. The surface downward stress is the windstress on the surface. 2017-11-28
integral_of_surface_downward_latent_heat_flux_wrt_time integral of surface downward latent heat flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). The surface latent heat flux is the exchange of heat between the surface and the air on account of evaporation (including sublimation). In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_surface_downward_northward_stress_wrt_time integral of surface downward northward stress wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Northward" indicates a vector component which is positive when directed northward (negative southward). "Downward" indicates a vector component which is positive when directed downward (negative upward). "Downward northward" indicates the ZY component of a tensor. A downward northward stress is a downward flux of northward momentum, which accelerates the lower medium northward and the upper medium southward. The surface downward stress is the windstress on the surface. 2017-11-28
integral_of_surface_downward_sensible_heat_flux_wrt_time integral of surface downward sensible heat flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). The surface sensible heat flux, also called "turbulent" heat flux, is the exchange of heat between the surface and the air by motion of air. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_surface_downwelling_longwave_flux_in_air_wrt_time integral of surface downwelling longwave flux in air wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "longwave" means longwave radiation. Downwelling radiation is radiation from above. It does not mean "net downward". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_surface_downwelling_shortwave_flux_in_air_wrt_time integral of surface downwelling shortwave flux in air wrt time DEPRECATED "integral_ of_ Y_ wrt_ X" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Downwelling radiation is radiation from above. It does not mean "net downward". Surface downwelling shortwave is the sum of direct and diffuse solar radiation incident on the surface, and is sometimes called "global radiation". When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_surface_net_downward_longwave_flux_wrt_time integral of surface net downward longwave flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). "Longwave" means longwave radiation. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_surface_net_downward_shortwave_flux_wrt_time integral of surface net downward shortwave flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. The surface called "surface" means the lower boundary of the atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). "Shortwave" means shortwave radiation. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_toa_net_downward_shortwave_flux_wrt_time integral of toa net downward shortwave flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. "toa" means top of atmosphere. "Downward" indicates a vector component which is positive when directed downward (negative upward). Net downward radiation is the difference between radiation from above (downwelling) and radiation from below (upwelling). "Shortwave" means shortwave radiation. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_of_toa_outgoing_longwave_flux_wrt_time integral of toa outgoing longwave flux wrt time DEPRECATED integral_ of_ Y_ wrt_ X means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. "toa" means top of atmosphere. "Longwave" means longwave radiation. The TOA outgoing longwave flux is the upwelling thermal radiative flux, often called the "outgoing longwave radiation" or "OLR". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. 2017-11-28
integral_wrt_depth_of_product_of_conservative_temperature_and_sea_water_density integral wrt depth of product of conservative temperature and sea water density The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". Depth is the vertical distance below the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Conservative Temperature is defined as part of the Thermodynamic Equation of Seawater 2010 (TEOS-10) which was adopted in 2010 by the International Oceanographic Commission (IOC). Conservative Temperature is specific potential enthalpy (which has the standard name sea_ water_ specific_ potential_ enthalpy) divided by a fixed value of the specific heat capacity of sea water, namely cp_ 0 = 3991.86795711963 J kg-1 K-1. Conservative Temperature is a more accurate measure of the "heat content" of sea water, by a factor of one hundred, than is potential temperature. Because of this, it can be regarded as being proportional to the heat content of sea water per unit mass. Reference: www.teos-10.org; McDougall, 2003 doi: 10.1175/1520-0485(2003)033<0945:PEACOV>2.0.CO;2. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. 2019-10-14
integral_wrt_depth_of_product_of_potential_temperature_and_sea_water_density integral wrt depth of product of potential temperature and sea water density The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". The phrase "product_ of_ X_ and_ Y" means X*Y. Depth is the vertical distance below the surface. Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. 2019-10-14
integral_wrt_depth_of_product_of_salinity_and_sea_water_density integral wrt depth of product of salinity and sea water density The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". The phrase "product_ of_ X_ and_ Y" means X*Y. Depth is the vertical distance below the surface. Sea water salinity is the salt content of sea water, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. There are standard names for the more precisely defined salinity quantities sea_ water_ knudsen_ salinity, S_ K (used for salinity observations between 1901 and 1966), sea_ water_ cox_ salinity, S_ C (used for salinity observations between 1967 and 1977), sea_ water_ practical_ salinity, S_ P (used for salinity observations from 1978 to the present day), sea_ water_ absolute_ salinity, S_ A, sea_ water_ preformed_ salinity, S_ *, and sea_ water_ reference_ salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows S_ P = (S_ K - 0.03) * (1.80655 / 1.805) and S_ P = S_ C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_ C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_ water_ salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_ water_ practical_ salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. Practical salinity units are dimensionless. The unit "parts per thousand" was used for sea_ water_ knudsen_ salinity and sea_ water_ cox_ salinity. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. 2019-10-14
integral_wrt_depth_of_product_of_sea_water_density_and_conservative_temperature integral wrt depth of product of sea water density and conservative temperature DEPRECATED The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". Depth is the vertical distance below the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. Conservative Temperature is defined as part of the Thermodynamic Equation of Seawater 2010 (TEOS-10) which was adopted in 2010 by the International Oceanographic Commission (IOC). Conservative Temperature is specific potential enthalpy (which has the standard name sea_ water_ specific_ potential_ enthalpy) divided by a fixed value of the specific heat capacity of sea water, namely cp_ 0 = 3991.86795711963 J kg-1 K-1. Conservative Temperature is a more accurate measure of the "heat content" of sea water, by a factor of one hundred, than is potential temperature. Because of this, it can be regarded as being proportional to the heat content of sea water per unit mass. Reference: www.teos-10.org; McDougall, 2003 doi: 10.1175/1520-0485(2003)033<0945:PEACOV>2.0.CO;2. 2019-10-14
integral_wrt_depth_of_product_of_sea_water_density_and_potential_temperature integral wrt depth of product of sea water density and potential temperature DEPRECATED The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". The phrase "product_ of_ X_ and_ Y" means X*Y. Depth is the vertical distance below the surface. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. 2019-10-14
integral_wrt_depth_of_product_of_sea_water_density_and_salinity integral wrt depth of product of sea water density and salinity DEPRECATED The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". The phrase "product_ of_ X_ and_ Y" means X*Y. Depth is the vertical distance below the surface. Sea water density is the in-situ density (not the potential density). For Boussinesq models, density is the constant Boussinesq reference density, a quantity which has the standard name reference_ sea_ water_ density_ for_ boussinesq_ approximation. Sea water salinity is the salt content of sea water, often on the Practical Salinity Scale of 1978. However, the unqualified term 'salinity' is generic and does not necessarily imply any particular method of calculation. The units of salinity are dimensionless and the units attribute should normally be given as 1e-3 or 0.001 i.e. parts per thousand. There are standard names for the more precisely defined salinity quantities sea_ water_ knudsen_ salinity, S_ K (used for salinity observations between 1901 and 1966), sea_ water_ cox_ salinity, S_ C (used for salinity observations between 1967 and 1977), sea_ water_ practical_ salinity, S_ P (used for salinity observations from 1978 to the present day), sea_ water_ absolute_ salinity, S_ A, sea_ water_ preformed_ salinity, S_ *, and sea_ water_ reference_ salinity. Practical Salinity is reported on the Practical Salinity Scale of 1978 (PSS-78), and is usually based on the electrical conductivity of sea water in observations since the 1960s. Conversion of data between the observed scales follows S_ P = (S_ K - 0.03) * (1.80655 / 1.805) and S_ P = S_ C, however the accuracy of the latter is dependent on whether chlorinity or conductivity was used to determine the S_ C value, with this inconsistency driving the development of PSS-78. The more precise standard names should be used where appropriate for both modelled and observed salinities. In particular, the use of sea_ water_ salinity to describe salinity observations made from 1978 onwards is now deprecated in favor of the term sea_ water_ practical_ salinity which is the salinity quantity stored by national data centers for post-1978 observations. The only exception to this is where the observed salinities are definitely known not to be recorded on the Practical Salinity Scale. Practical salinity units are dimensionless. The unit "parts per thousand" was used for sea_ water_ knudsen_ salinity and sea_ water_ cox_ salinity. 2019-10-14
integral_wrt_depth_of_sea_ice_temperature_expressed_as_heat_content integral wrt depth of sea ice temperature expressed as heat content DEPRECATED The quantity with standard name integral_ wrt_ depth_ of_ sea_ ice_ temperature_ expressed_ as_ heat_ content is calculated relative to the heat content of ice at zero degrees Celsius, which is assumed to have a heat content of zero Joules. The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. "Content" indicates a quantity per unit area. Depth is the vertical distance below the surface. 2018-07-03
integral_wrt_depth_of_sea_water_potential_temperature_expressed_as_heat_content integral wrt depth of sea water potential temperature expressed as heat content DEPRECATED The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. "expressed_ as_ heat_ content" means that this quantity is calculated as the (assumed constant) specific heat capacity times density of sea water multiplied by the integral, over the specified layer of the ocean, of the sea water potential temperature wrt depth. "Content" indicates a quantity per unit area. Depth is the vertical distance below the surface. Potential temperature is the temperature a parcel of air or sea water would have if moved adiabatically to sea level pressure. 2018-07-03
integral_wrt_depth_of_sea_water_practical_salinity integral wrt depth of sea water practical salinity The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. Depth is the vertical distance below the surface. Practical Salinity, S_ P, is a determination of the salinity of sea water, based on its electrical conductance. The measured conductance, corrected for temperature and pressure, is compared to the conductance of a standard potassium chloride solution, producing a value on the Practical Salinity Scale of 1978 (PSS-78). This name should not be used to describe salinity observations made before 1978, or ones not based on conductance measurements. Conversion of Practical Salinity to other precisely defined salinity measures should use the appropriate formulas specified by TEOS-10. Other standard names for precisely defined salinity quantities are sea_ water_ absolute_ salinity (S_ A); sea_ water_ preformed_ salinity (S_ *), sea_ water_ reference_ salinity (S_ R); sea_ water_ cox_ salinity (S_ C), used for salinity observations between 1967 and 1977; and sea_ water_ knudsen_ salinity (S_ K), used for salinity observations between 1901 and 1966. Salinity quantities that do not match any of the precise definitions should be given the more general standard name of sea_ water_ salinity. Reference: www.teos-10.org; Lewis, 1980 doi:10.1109/JOE.1980.1145448. 2018-05-15
integral_wrt_depth_of_sea_water_temperature integral wrt depth of sea water temperature The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. Depth is the vertical distance below the surface. Sea water temperature is the in situ temperature of the sea water. For observed data, depending on the period during which the observation was made, the measured in situ temperature was recorded against standard "scales". These historical scales include the International Practical Temperature Scale of 1948 (IPTS-48; 1948-1967), the International Practical Temperature Scale of 1968 (IPTS-68, Barber, 1969; 1968-1989) and the International Temperature Scale of 1990 (ITS-90, Saunders 1990; 1990 onwards). Conversion of data between these scales follows t68 = t48 - (4.4 x 10e-6) * t48(100 - t - 48); t90 = 0.99976 * t68. Observations made prior to 1948 (IPTS-48) have not been documented and therefore a conversion cannot be certain. Differences between t90 and t68 can be up to 0.01 at temperatures of 40 C and above; differences of 0.002-0.007 occur across the standard range of ocean temperatures (-10 - 30 C). The International Equation of State of Seawater 1980 (EOS-80, UNESCO, 1981) and the Practical Salinity Scale (PSS-78) were both based on IPTS-68, while the Thermodynamic Equation of Seawater 2010 (TEOS-10) is based on ITS-90. References: Barber, 1969, doi: 10.1088/0026-1394/5/2/001; UNESCO, 1981; Saunders, 1990, WOCE Newsletter, 10, September 1990. 2018-05-15
integral_wrt_depth_of_sea_water_temperature_in_ocean_layer integral wrt depth of sea water temperature in ocean layer DEPRECATED The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. "Layer" means any layer with upper and lower boundaries that have constant values in some vertical coordinate. There must be a vertical coordinate variable indicating the extent of the layer(s). If the layers are model layers, the vertical coordinate can be model_ level_ number, but it is recommended to specify a physical coordinate (in a scalar or auxiliary coordinate variable) as well. Depth is the vertical distance below the surface. Sea water temperature is the in situ temperature of the sea water. For observed data, depending on the period during which the observation was made, the measured in situ temperature was recorded against standard "scales". These historical scales include the International Practical Temperature Scale of 1948 (IPTS-48; 1948-1967), the International Practical Temperature Scale of 1968 (IPTS-68, Barber, 1969; 1968-1989) and the International Temperature Scale of 1990 (ITS-90, Saunders 1990; 1990 onwards). Conversion of data between these scales follows t68 = t48 - (4.4 x 10e-6) * t48(100 - t - 48); t90 = 0.99976 * t68. Observations made prior to 1948 (IPTS-48) have not been documented and therefore a conversion cannot be certain. Differences between t90 and t68 can be up to 0.01 at temperatures of 40 C and above; differences of 0.002-0.007 occur across the standard range of ocean temperatures (-10 - 30 C). The International Equation of State of Seawater 1980 (EOS-80, UNESCO, 1981) and the Practical Salinity Scale (PSS-78) were both based on IPTS-68, while the Thermodynamic Equation of Seawater 2010 (TEOS-10) is based on ITS-90. References: Barber, 1969, doi: 10.1088/0026-1394/5/2/001; UNESCO, 1981; Saunders, 1990, WOCE Newsletter, 10, September 1990. 2018-05-15
integral_wrt_depth_of_tendency_of_sea_water_alkalinity_expressed_as_mole_equivalent integral wrt depth of tendency of sea water alkalinity expressed as mole equivalent The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. Depth is the vertical distance below the surface."tendency_ of_ X" means derivative of X with respect to time. 'sea_ water_ alkalinity_ expressed_ as_ mole_ equivalent' is the total alkalinity equivalent concentration (including carbonate, nitrogen, silicate, and borate components). 2018-05-15
integral_wrt_depth_of_tendency_of_sea_water_alkalinity_expressed_as_mole_equivalent_due_to_biological_processes integral wrt depth of tendency of sea water alkalinity expressed as mole equivalent due to biological processes The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. "wrt" means with respect to. "tendency_ of_ X" means derivative of X with respect to time. Depth is the vertical distance below the surface. 'sea_ water_ alkalinity_ expressed_ as_ mole_ equivalent' is the total alkalinity equivalent concentration (including carbonate, nitrogen, silicate, and borate components). The specification of a physical process by the phrase due_ to_ process means that the quantity named is a single term in a sum of terms which together compose the general quantity named by omitting the phrase. 2018-05-15
integral_wrt_height_of_product_of_eastward_wind_and_specific_humidity integral wrt height of product of eastward wind and specific humidity The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". Height is the vertical distance above the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity".) "Eastward" indicates a vector component which is positive when directed eastward (negative westward). Specific humidity is the mass fraction of water vapor in (moist) air. 2018-05-29
integral_wrt_height_of_product_of_northward_wind_and_specific_humidity integral wrt height of product of northward wind and specific humidity The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. To specify the limits of the integral the data variable should have an axis for X and associated coordinate bounds. If no axis for X is associated with the data variable, or no coordinate bounds are specified, it is assumed that the integral is calculated over the entire vertical extent of the medium, e.g, if the medium is air the integral is assumed to be calculated over the full depth of the atmosphere. The phrase "wrt" means "with respect to". Height is the vertical distance above the surface. The phrase "product_ of_ X_ and_ Y" means X*Y. Wind is defined as a two-dimensional (horizontal) air velocity vector, with no vertical component. (Vertical motion in the atmosphere has the standard name "upward_ air_ velocity".) "Northward" indicates a vector component which is positive when directed northward (negative southward). Specific humidity is the mass fraction of water vapor in (moist) air. 2018-05-15
integral_wrt_time_of_air_temperature_deficit integral wrt time of air temperature deficit The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The air temperature deficit is the air temperature threshold minus the air temperature, where only positive values are included in the integral. Its integral with respect to time is often called after its units of "degree-days". The air_ temperature variable, which is the data variable of the integral should have a scalar coordinate variable or a size-one coordinate variable with the standard name of air_ temperature_ threshold, to indicate the threshold. 2017-11-28
integral_wrt_time_of_air_temperature_excess integral wrt time of air temperature excess The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. "wrt" means with respect to. Air temperature is the bulk temperature of the air, not the surface (skin) temperature. The air temperature excess is the air temperature minus the air temperature threshold, where only positive values are included in the integral. Its integral with respect to time is often called after its units of "degree-days". The air_ temperature variable, which is the data variable of the integral should have a scalar coordinate variable or a size-one coordinate variable with the standard name of air_ temperature_ threshold, to indicate the threshold. 2017-11-28
integral_wrt_time_of_mole_stomatal_uptake_of_ozone integral wrt time of mole stomatal uptake of ozone The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". The stomatal ozone uptake is the net amount of ozone transferred into the plant during the time period over which the integral is calculated. This parameter is often called the "phytotoxic ozone dose (POD)". The chemical formula for ozone is O3. The IUPAC name for ozone is trioxygen. 2018-05-15
integral_wrt_time_of_radioactivity_concentration_in_air integral wrt time of radioactivity concentration in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_101Mo_in_air integral wrt time of radioactivity concentration of 101Mo in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Mo" means the element "molybdenum" and "101Mo" is the isotope "molybdenum-101" with a half-life of 1.01e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_101Tc_in_air integral wrt time of radioactivity concentration of 101Tc in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Tc" means the element "technetium" and "101Tc" is the isotope "technetium-101" with a half-life of 9.86e-03 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_102Mo_in_air integral wrt time of radioactivity concentration of 102Mo in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Mo" means the element "molybdenum" and "102Mo" is the isotope "molybdenum-102" with a half-life of 7.71e-03 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_102Tc_in_air integral wrt time of radioactivity concentration of 102Tc in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Tc" means the element "technetium" and "102Tc" is the isotope "technetium-102" with a half-life of 6.12e-05 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_102mTc_in_air integral wrt time of radioactivity concentration of 102mTc in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Tc" means the element "technetium" and "102mTc" is the metastable state of the isotope "technetium-102" with a half-life of 2.98e-03 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_103Ru_in_air integral wrt time of radioactivity concentration of 103Ru in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ru" means the element "ruthenium" and "103Ru" is the isotope "ruthenium-103" with a half-life of 3.95e+01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_103mRh_in_air integral wrt time of radioactivity concentration of 103mRh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "103mRh" is the metastable state of the isotope "rhodium-103" with a half-life of 3.89e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_104Tc_in_air integral wrt time of radioactivity concentration of 104Tc in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Tc" means the element "technetium" and "104Tc" is the isotope "technetium-104" with a half-life of 1.25e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_105Rh_in_air integral wrt time of radioactivity concentration of 105Rh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "105Rh" is the isotope "rhodium-105" with a half-life of 1.48e+00 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_105Ru_in_air integral wrt time of radioactivity concentration of 105Ru in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ru" means the element "ruthenium" and "105Ru" is the isotope "ruthenium-105" with a half-life of 1.85e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_105mRh_in_air integral wrt time of radioactivity concentration of 105mRh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "105mRh" is the metastable state of the isotope "rhodium-105" with a half-life of 4.41e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_106Rh_in_air integral wrt time of radioactivity concentration of 106Rh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "106Rh" is the isotope "rhodium-106" with a half-life of 3.46e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_106Ru_in_air integral wrt time of radioactivity concentration of 106Ru in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ru" means the element "ruthenium" and "106Ru" is the isotope "ruthenium-106" with a half-life of 3.66e+02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_106mRh_in_air integral wrt time of radioactivity concentration of 106mRh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "106mRh" is the metastable state of the isotope "rhodium-106" with a half-life of 9.09e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_107Pd_in_air integral wrt time of radioactivity concentration of 107Pd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "107Pd" is the isotope "palladium-107" with a half-life of 2.37e+09 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_107Rh_in_air integral wrt time of radioactivity concentration of 107Rh in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Rh" means the element "rhodium" and "107Rh" is the isotope "rhodium-107" with a half-life of 1.51e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_107mPd_in_air integral wrt time of radioactivity concentration of 107mPd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "107mPd" is the metastable state of the isotope "palladium-107" with a half-life of 2.47e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_109Pd_in_air integral wrt time of radioactivity concentration of 109Pd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "109Pd" is the isotope "palladium-109" with a half-life of 5.61e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_109mAg_in_air integral wrt time of radioactivity concentration of 109mAg in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "109mAg" is the metastable state of the isotope "silver-109" with a half-life of 4.58e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_110mAg_in_air integral wrt time of radioactivity concentration of 110mAg in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "110mAg" is the metastable state of the isotope "silver-110" with a half-life of 2.70e+02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_111Ag_in_air integral wrt time of radioactivity concentration of 111Ag in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "111Ag" is the isotope "silver-111" with a half-life of 7.50e+00 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_111Pd_in_air integral wrt time of radioactivity concentration of 111Pd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "111Pd" is the isotope "palladium-111" with a half-life of 1.53e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_111mAg_in_air integral wrt time of radioactivity concentration of 111mAg in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "111mAg" is the metastable state of the isotope "silver-111" with a half-life of 8.56e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_111mCd_in_air integral wrt time of radioactivity concentration of 111mCd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "111mCd" is the metastable state of the isotope "cadmium-111" with a half-life of 3.39e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_111mPd_in_air integral wrt time of radioactivity concentration of 111mPd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "111mPd" is the metastable state of the isotope "palladium-111" with a half-life of 2.29e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_112Ag_in_air integral wrt time of radioactivity concentration of 112Ag in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "112Ag" is the isotope "silver-112" with a half-life of 1.30e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_112Pd_in_air integral wrt time of radioactivity concentration of 112Pd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Pd" means the element "palladium" and "112Pd" is the isotope "palladium-112" with a half-life of 8.37e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_113Ag_in_air integral wrt time of radioactivity concentration of 113Ag in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "113Ag" is the isotope "silver-113" with a half-life of 2.21e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_113Cd_in_air integral wrt time of radioactivity concentration of 113Cd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "113Cd" is the isotope "cadmium-113" with a half-life of 3.29e+18 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_113mAg_in_air integral wrt time of radioactivity concentration of 113mAg in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "113mAg" is the metastable state of the isotope "silver-113" with a half-life of 7.64e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_113mCd_in_air integral wrt time of radioactivity concentration of 113mCd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "113mCd" is the metastable state of the isotope "cadmium-113" with a half-life of 5.31e+03 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_113mIn_in_air integral wrt time of radioactivity concentration of 113mIn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "113mIn" is the metastable state of the isotope "indium-113" with a half-life of 6.92e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115Ag_in_air integral wrt time of radioactivity concentration of 115Ag in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "115Ag" is the isotope "silver-115" with a half-life of 1.46e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115Cd_in_air integral wrt time of radioactivity concentration of 115Cd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "115Cd" is the isotope "cadmium-115" with a half-life of 2.23e+00 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115In_in_air integral wrt time of radioactivity concentration of 115In in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "115In" is the isotope "indium-115" with a half-life of 1.86e+18 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115mAg_in_air integral wrt time of radioactivity concentration of 115mAg in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Ag" means the element "silver" and "115mAg" is the metastable state of the isotope "silver-115" with a half-life of 1.97e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115mCd_in_air integral wrt time of radioactivity concentration of 115mCd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "115mCd" is the metastable state of the isotope "cadmium-115" with a half-life of 4.46e+01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_115mIn_in_air integral wrt time of radioactivity concentration of 115mIn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "115mIn" is the metastable state of the isotope "indium-115" with a half-life of 1.87e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_116In_in_air integral wrt time of radioactivity concentration of 116In in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "116In" is the isotope "indium-116" with a half-life of 1.64e-04 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_116mIn_in_air integral wrt time of radioactivity concentration of 116mIn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "116mIn" is the metastable state of the isotope "indium-116" with a half-life of 3.77e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_117Cd_in_air integral wrt time of radioactivity concentration of 117Cd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "117Cd" is the isotope "cadmium-117" with a half-life of 1.08e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_117In_in_air integral wrt time of radioactivity concentration of 117In in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "117In" is the isotope "indium-117" with a half-life of 3.05e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_117mCd_in_air integral wrt time of radioactivity concentration of 117mCd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "117mCd" is the metastable state of the isotope "cadmium-117" with a half-life of 1.42e-01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_117mIn_in_air integral wrt time of radioactivity concentration of 117mIn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "117mIn" is the metastable state of the isotope "indium-117" with a half-life of 8.08e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_117mSn_in_air integral wrt time of radioactivity concentration of 117mSn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Sn" means the element "tin" and "117mSn" is the metastable state of the isotope "tin-117" with a half-life of 1.40e+01 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_118Cd_in_air integral wrt time of radioactivity concentration of 118Cd in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "Cd" means the element "cadmium" and "118Cd" is the isotope "cadmium-118" with a half-life of 3.49e-02 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_118In_in_air integral wrt time of radioactivity concentration of 118In in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "118In" is the isotope "indium-118" with a half-life of 5.77e-05 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_118mIn_in_air integral wrt time of radioactivity concentration of 118mIn in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "118mIn" is the metastable state of the isotope "indium-118" with a half-life of 3.05e-03 days. 2018-02-12
integral_wrt_time_of_radioactivity_concentration_of_119In_in_air integral wrt time of radioactivity concentration of 119In in air The phrase "integral_ wrt_ X_ of_ Y" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase "wrt" means "with respect to". "Radioactivity" means the number of radioactive decays of a material per second. "Radioactivity concentration" means radioactivity per unit volume of the medium. "In" means the element "indium" and "119In" is the isotope "indium-119&#