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Vocabulary

BODC parameter semantic model parameter entity names

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URI http://vocab.nerc.ac.uk/collection/S06/current/
DescriptionControlled vocabulary defining the terms that may be used to specify the property element of a parameter (part of the 'what' theme) in the BODC parameter semantic model.
CreatorBritish Oceanographic Data Centre
Modified2021-03-17
Version Info101
Identifier S06
Register Manager British Oceanographic Data Centre
Register Owner British Oceanographic Data Centre
See Also https://github.com/nvs-vocabs/S06
Members
Identifier PrefLabel Definition Date
S0600001 14C age The age of an object determined by radiocarbon dating expressed relative to a datum of AD 1950. 2006-02-17
S0600125 4-pi scalar irradiance as photons The flux of photons reaching a spherical surface from every direction. 2017-12-18
S0600084 Absolute salinity Salinity in terms of mass per unit mass computed from practical salinity using TEOS-10 equation of state. 2017-09-19
S0600080 Absorbance A measure of the quantity of incident electromagnetic radiation that is absorbed by an object, substance or solution. 2017-07-11
S0600002 Abundance The number of occurrences of an entity per unit area or per unit volume. 2006-02-17
S0600178 Abundance category Nominal scale used to qualify the abundance of an organism in a survey or sample. 2018-06-07
S0600179 Abundance category (SACFOR) Standardised nominal scale that classifies the abundance of marine benthic flora and fauna into 6 categories (Superabundant, Abundant, Common, Frequent, Occasional, Rare) based on the percent cover or density of organisms on the bed. 2018-06-08
S0600212 Abundance category (SACFORN) Standardised nominal scale that classifies the abundance of marine benthic flora and fauna into 7 categories (Superabundant, Abundant, Common, Frequent, Occasional, Rare, Not found) based on the percent cover or density of organisms on a surface. A variant of the SACFOR scale with the purpose of adding a zero category. 2018-09-21
S0600220 Abundance increase The positive change in the number of occurrences of an entity between two points (typically two points in time); negative values indicate a decrease. 2019-01-21
S0600209 Acceptable proportion Also referred to as Percent Good, this is the proportion of good data collected per beam and depth cell from an acoustic doppler current profiler (ADCP). Represented as a percentage between 0 and 100. 2018-09-14
S0600003 Accumulation rate The rate at which the quantity of an entity increases. 2006-02-17
S0600043 Activity The number of disintegrations of a radioactive substance in a given unit of time (physics) or in the ability of a substance to take part in a chemical reaction (chemistry). 2015-09-02
S0600241 Activity ratio Quotient of the radioactive decay rates of two co-located radionuclides. 2019-05-30
S0600254 Amplitude The maximum displacement of a periodic variable over a single spatial or temporal period. 2020-06-17
S0600054 Apparent utilisation The difference between the measured chemical susbtance concentration and its equilibrium saturation concentration in a matrix with the same physical and chemical properties. 2016-05-20
S0600146 Area The size of a 2-dimensional plane; for the exposed surface of a solid object use 'Surface area'. 2018-03-27
S0600086 Ash-free dry weight biomass An estimate of the weight of organic biomass in a given area , volume or mass of environmental matrix based on the weight of a biological sample after drying minus the weight of the material left behind after total incineration of the sample (mineral fraction). 2018-01-10
S0600232 Ash-free dry weight biomass production rate The rate (measured or modelled) at which biomass, exclusive of water and mineral matter, is produced over a given time. 2019-03-16
S0600240 Atomic ratio Quotient of the number of atoms of two co-located chemical elements or isotopes. 2019-05-30
S0600217 Attenuation The proportion of any kind of flux or signal that is lost when absorbed or scattered by a medium. 2018-12-05
S0600218 Attenuation due to backscatter The fraction of scattered light that is deflected through scattering angles greater than 90 deg. 2018-12-05
S0600219 Attenuation due to volume scatter The fraction of scattered light that is deflected through scattering angles from 0-180 degrees that is dependent on the volume of the medium. 2018-12-05
S0600102 Bill depth at gonys A standard measurement in bird biometrics. 2017-12-01
S0600004 BiomassDEPRECATED The amount of organism per unit area or per unit volume expressed as mass or amount of a chemical constituent. This code was created too broad and was deprecated on 25/10/2018. 2018-10-25
S0600005 Biosurface area The surface area of organisms per unit area of per unit volume. 2006-02-17
S0600006 Biovolume The volume of of organisms per unit area of per unit volume. 2006-02-17
S0600233 Blubber thickness The thickness of the layer of adipose subcutaneous tissue (blubber) found in cetaceans, pinnipeds, sirenians, and polar bears. 2019-03-16
S0600227 Cause of death Single cause of death of biological specimen. This is either free text or a term or code from a controlled vocabulary. 2019-03-16
S0600081 Cell volume The volume of a single cell or the average volume of single cells. 2017-07-31
S0600106 Characteristic wave height A computationally convenient approximation (root mean square wave height in sampling period multiplied by 4) to significant wave height. Significant wave height is a statistic computed from wave measurements that correspond to the average height of the highest one third of the waves, where wave height is defined as the vertical distance from a wave trough to the following wave crest. 2017-12-07
S0600007 Clearance rate In marine biology the clearance rate is the volume of water cleared of suspended particles over a given period of time. 2018-09-11
S0600090 Colour class A character string defining a colour category in a classification. 2017-11-25
S0600045 Concentration The amount of a specified substance in a unit amount of another substance or matrix. 2015-09-02
S0600050 Concentration as carbon Concentration expressed in terms of carbon. 2016-05-01
S0600076 Concentration change rate The difference between the concentration of a substance at a given time minus its concentration at an earlier time divided by the time elapsed between the two time points. 2017-06-29
S0600056 Concentration recalculated to zero salinity The concentration of a substance in solution calculated as the equivalent in a zero salinity solution. 2016-11-09
S0600198 Consumption rate The amount of a given subtance used over a given period of time. 2018-09-11
S0600197 Correlation magnitude A measure of the pulse to pulse correlation in acoustic pulses from an acoustic dopppler current profiler, at the lag used for estimating the doppler phase shift. Used as a quality control indicator. 2018-09-11
S0600008 Count The number of occurrences of an entity. 2006-02-17
S0600173 Count (leaves per shoot) The number of leaves per shoot of a vascular plant. 2018-03-27
S0600195 Critical erosion velocity threshold The velocity at which bed sediments are entrained into suspension by fluid flow. 2018-09-04
S0600169 Depth The vertical dimension through an object or a body of matter measured downward from an upper surface (or top) to its base (or bottom) (e.g. water column depth). Not to be used for depth as a spatial coordinate. 2018-03-26
S0600167 Depth (spatial coordinate) The vertical location of an object or an observation in a water body or in the sediment expressed as the distance below a specified datum. 2018-03-14
S0600147 Description A character string providing textual information either as free-text or using a controlled vocabulary. 2018-01-10
S0600211 Diameter The length of a straight line passing through the center of a round object or figure from side to side. 2018-09-21
S0600236 Dilution of precision Uncertainty index associated with the geometry of a ranging system. 2019-04-04
S0600112 Direction (from) The compass direction (degrees clockwise from True North) from which a vector is propagating. 2018-06-01
S0600142 Direction (from) at spectral maximum A spectral analysis wave parameter defined as the direction from which the waves with the highest energy are coming. 2019-04-08
S0600111 Direction (towards) The compass direction (degrees clockwise from True North) towards which a vector is travelling. 2018-06-01
S0600214 Direction of motion The compass direction (degrees clockwise from True North) towards which an object is moving. 2018-10-02
S0600114 Directional spectral density A spectral analysis wave parameter. The variance of sea surface elevation at a given frequency (wave period reciprocal) and given direction in a directional wave power spectrum. 2018-07-17
S0600113 Directional spreading The standard deviation of the wave directions. 2018-07-17
S0600190 Directional spreading at spectral maximum A spectral analysis wave parameter. 2018-07-17
S0600077 Dissimilation rate The speed with which an organic substance is broken down into simpler molecules in living organisms, releasing energy. 2017-07-11
S0600207 Downstream velocity The rate at which matter, an entity or an object moves downstream, in the direction a current stream or a river flows. 2018-10-01
S0600130 Downwelling 2-pi scalar irradiance as energy The downward hemispherical component of light as electromagnetic radiation energy. 2017-12-18
S0600126 Downwelling 2-pi scalar irradiance as photons The downward component of the flux of photons reaching an hemispherical surface. 2017-12-18
S0600131 Downwelling vector irradiance as energy The downward vertical component of light as electromagnetic radiation energy. 2017-12-18
S0600127 Downwelling vector irradiance as photons The downward vertical component of the flux of photons reaching a surface. 2017-12-18
S0600148 Dry weight The weight of an object or sample after all water has been removed. 2018-01-10
S0600087 Dry weight biomass The weight of both organic and inorganic (i.e. mineral) matter of biological organisms in a given area, volume or mass of environmental matrix after all the water has been removed. This is typically done by baking samples at a temperature low enough to avoid combustion (typically around 60 degrees Celsius) followed by a period in a sealed container containing a desiccant. 2018-01-10
S0600223 Easting Cartesian x co-ordinate of a point relative to a horizontal datum. 2019-01-25
S0600199 Eastward Stokes drift velocity The average eastward velocity when following a fluid parcel as it travels with the fluid flow. It is also defined as the difference between the average Lagrangian flow velocity of a fluid parcel and the average Eulerian flow velocity of the fluid at a fixed position. 2018-09-14
S0600153 Eastward velocity The rate at which matter moves towards the East. 2018-01-12
S0600249 Eastward wind stress The drag force per unit area caused by wind shear towards the compass direction of true east. 2020-02-25
S0600208 Echo intensity A measure of the intensity or strength of the backscattered acoustic signal return per beam and depth cell from an acoustic doppler current profiler (ADCP). 2018-09-14
S0600164 Elapsed time The amount of time passed between two marked events. 2018-03-04
S0600194 Elapsed time since 00:00:00 UTC The time that has passed between the beginning of the day at 00:00:00Z and the timestamped event. 2018-09-10
S0600165 Electric current A flow of charged particles. 2018-03-04
S0600039 Enrichment The change in the relative abundances of the isotope of a given element relative to a known abundance either in the past geological record or used as a tracer in biological and chemical process rate measurements. 2015-09-02
S0600058 Enrichment with respect to 112Cd/110Cd in NIST SRM 3108 Deviation of the 112Cd/110Cd isotopic ratio of a sample relative to the standard solution SRM 3108, a reference material for cadmium (Cd) developed by the US National Institute of Standards and Technology. It is defined as delta(112/110Cd)NIST =([112Cd/110Cd]sample/[112Cd/110Cd]NIST)-1)×1000. One delta unit represents a one part per 1,000 deviation from the NIST standard composition. 2017-08-10
S0600059 Enrichment with respect to 114Cd/110Cd in NIST SRM 3108 Deviation of the 114Cd/110Cd isotopic ratio of a sample relative to the standard solution SRM 3108, a reference material for cadmium (Cd) developed by the US National Institute of Standards and Technology. It is defined as delta(114/110Cd)NIST =([114Cd/110Cd]sample/[114Cd/110Cd]NIST)-1)×1000. One delta unit represents a one part per 1,000 deviation from the NIST standard composition. 2017-08-10
S0600057 Enrichment with respect to 138Ba/134Ba in NIST SRM 3104a Deviation of the 138Ba/134Ba isotopic ratio of a sample relative to the standard solution SRM 3104a, a reference material for Barium (Ba) developed by the US National Institute of Standards and Technology, defined as delta(138/134Ba)NIST =([138Ba/134Ba]sample/[138Ba/134Ba]NIST)-1)×1000. One delta unit represents a one part per 1,000 deviation from the NIST standard composition. 2017-08-10
S0600048 Enrichment with respect to 143Nd/144Nd in the CHondritic Uniform Reservoir (CHUR) Departure of the isotope ratio 143Nd/144Nd from the CHondritic Uniform Reservoir (CHUR) evolution line. 2016-02-01
S0600175 Enrichment with respect to 176Hf/177Hf in the CHondritic Uniform Reservoir (CHUR) Departure of the isotope ratio 176Hf/177Hf from the CHondritic Uniform Reservoir (CHUR) evolution line. 2018-04-18
S0600176 Enrichment with respect to 53Cr/52Cr in NBS979 Deviation of the isotope ratio 53Cr/52Cr relative to the international reference material, NBS979, a chromium isotopic standard. 2018-05-17
S0600064 Enrichment with respect to 56Fe/54Fe in IRMM-14 Deviation of the isotope ratio 56Fe/54Fe relative to the Institute for Reference Materials and Measurements, Belgium (IRMM) 14 standard. 2017-04-04
S0600063 Enrichment with respect to 60Ni/58Ni in NIST SRM 986 Deviation of the 60Ni/58Ni isotopic ratio of a sample relative to the National Institute of Standards and Technology (NIST, USA) standard solution SRM 986. 2017-03-21
S0600062 Enrichment with respect to 66Zn/64Zn in IRMM-3702 Deviation of the isotope ratio zinc-66/zinc-64 relative to the Institute for Reference Materials and Measurements, Belgium (IRMM) 3702 standard. It is defined as delta(66Zn/64Zn)IRMM-3702 =([66Zn/64Zn]sample/[66Zn/64Zn]IRMM-3702)-1)×1000. One delta unit represents a one part per 1,000 deviation from the IRMM-3702 standard composition. 2017-08-10
S0600060 Enrichment with respect to 66Zn/64Zn in Lyon JMC 3-0749 Deviation of the isotope ratio zinc-66/zinc-64 relative to the Lyon standard JMC 3-0749, a reference material for zinc developed at the Ecole Normale Supérieure of Lyon using Johnson-Matthey Company (JMC) metal stock 3-0749. It is defined as delta(66Zn/64Zn)Lyon-JMC =([66Zn/64Zn]sample/[66Zn/64Zn]Lyon-JMC)-1)×1000. One delta unit represents a one part per 1,000 deviation from the Lyon-JMC standard composition. 2017-08-10
S0600055 Enrichment with respect to Lyon JMC 3-0749DEPRECATED Abundance of an isotope of a given element reported relative to a standard solution developed at the Ecole Normale Supérieure of Lyon using Johnson-Matthey Company (JMC) metal stock 3-0749 and known as the 'Lyon' standard for zinc. 2018-01-23
S0600065 Enrichment with respect to VSMOW The change in the relative abundance of an isotope of a given element relative to the reference abundance measured in Vienna Standard Mean Ocean Water (VSMOW). 2017-04-25
S0600053 Enrichment with respect to Vienna Pee Dee Belemnite (VPDB) The change in the relative abundance of an isotope of a given element relative to the reference abundance measured in Vienna Pee Dee Belemnite. 2016-05-01
S0600066 Enrichment with respect to the VSMOW-SLAP scale The change in the relative abundance of an isotope of a given element relative to the value given on a scale formed by the reference materials Vienna Standard Mean Ocean Water (VSMOW) and Standard Light Antarctic Precipitation (SLAP). 2017-04-25
S0600260 Equivalent spherical diameter The diameter of a spherical particle of equivalent volume which will give identical geometric, optical, electrical or aerodynamic behaviour to that of the particle (non-spherical) being examined, sometimes referred to as the Stokes diameter for particles in non-turbulent flows (Source: IUPAC (1990), https://doi.org/10.1351/pac199062112167). 2020-11-04
S0600210 Error velocity The difference between two independent estimates of vertical velocity derived for each beam pair of an acoustic doppler current profiler (ADCP). 2018-09-14
S0600009 Evacuation rate The rate at which an organism disposes of a substance as solid waste. 2006-02-17
S0600049 Excess activity Difference between the measured activity of a radioactive isotope and the activity of that isotope predicted from equilibrium in-situ decay of its parent in a decay scheme. This difference is used as the basis for radiometric dating. 2016-02-12
S0600010 Expression Indication of whether or not a specified gene is present in an organism. 2006-02-17
S0600119 Forward light scatter pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600268 Friction velocity Also know as shear velocity, friction velocity is a way of expressing shear stress in units of velocity. It is defined as the square root of shear stress divided by fluid density. It is used in fluid mechanics to compare true velocities to a velocity that relates to shear between layers of flow. 2021-03-16
S0600074 Fugacity The effective partial pressure of a gas allowing for the non-ideal nature of the gas phase. 2017-06-29
S0600075 Fugacity anomaly (water - air) The difference between the fugacity of a gas in a sample in equilibrium with water minus the fugacity of this gas in an air sample. 2017-06-29
S0600177 Gas tension The partial pressure of gases dissolved in a medium such as blood or seawater. 2018-05-23
S0600140 Global standard stratigraphic age Unavailable 2017-12-19
S0600192 Grain-size A term used in sedimentology and size distribution analysis of granular material in general to refer to the diameter of individual particles. 2018-07-23
S0600011 Grazing coefficient The proportion of a substance or biomass removed per unit time through being eaten. 2006-02-17
S0600124 Green fluorescence pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600215 Gross production rate The rate at which an entity (chemical, biological) is produced over time in a system inclusive of any amount lost from the system. 2018-10-03
S0600012 Growth coefficient The increase in biomass of an organism per unit time. 2006-02-17
S0600013 Growth efficiency The amount of new biomass produced per unit of organic C substrate assimilated. 2006-02-17
S0600014 Gut pigment content The quantity of plant pigments in the gut of an organism. 2006-02-17
S0600264 Height The vertical dimension of an object. 2020-11-30
S0600166 Height (spatial coordinate) The vertical location of an object or an observation in a water body or in the atmosphere expressed as the distance above a specified datum. 2018-03-14
S0600204 Horizontal transport rate The rate at which matter moves along the horizontal. 2018-09-14
S0600244 Horizontal visibility Maximum distance at which an observer can see and identify an object lying close to the horizontal plane on which he or she is standing. (source: AMS glossary, 20200219) 2020-02-19
S0600246 Horizontal visibility (WMO code) An integer code used to classify the horizontal visibility. 2020-02-19
S0600156 Identifier A language-independent label that uniquely identifies an object within an identification system. 2018-01-30
S0600137 Irradiance as photons Radiative photon flux incident on a surface. 2017-12-19
S0600266 Latent heat flux The quantity of energy per unit area per unit time lost from the ocean surface resulting in ocean cooling that is subsequently released to warm the atmosphere when the vapour condenses to form clouds. 2021-03-13
S0600221 Latitude north Angular distance from the equator along a meridian of the Earth's surface, ranging from -90deg at the South Pole to 90deg at the North Pole. 2019-01-25
S0600015 Length The longest horizontal dimension of an object 2006-02-17
S0600101 Length (Standard Length) A standard measurement used in biometric science, in particular fish biometrics. 2017-11-30
S0600097 Length (culmen) A standard measurement in bird biometrics referring to the distance along the main axis of the upper margin of the beak or bill. 2017-11-30
S0600261 Length (fork length) A standard body length measurement used in fish biometric studies for fishes with forked tails and taken as the distance measured from the tip of the snout in a straight line to the posterior end of the shortest caudal rays in the center of the fork. 2020-11-26
S0600096 Length (from the front of the eye to the tip of the telson) The distance along the main axis between a point just in front of the eye and the end of the rear-most segment of the body of certain invertebrates (e.g. crustaceans). 2017-11-29
S0600098 Length (head) A standard measurement used in biometric science, in particular bird biometrics. 2017-11-30
S0600149 Length (in digital image) The longest horizontal dimension of an object captured in a digital image and normally expressed in number of pixels. 2018-01-10
S0600095 Length (metasome) The distance along the main axis of the posterior region of the body of certain invertebrates. 2017-11-29
S0600094 Length (prosome) The distance along the main axis of the anterior region of the body of certain invertebrates. 2017-11-29
S0600263 Length (second dorsal length) A body length measurement used for ratfish in fish biometric studies and taken as the distance measured from the snout to the posterior edge of the posterior lobe of the second dorsal fin. 2020-11-26
S0600099 Length (tarsus) A standard measurement used in biometric science, in particular bird biometrics. 2017-11-30
S0600262 Length (total length) A standard body length measurement used in biometric studies and taken as the longest distance along the main axis. In fish biometrics, this is the distance from the tip of the snout in a straight line to the posterior end of the caudal fin. 2020-11-26
S0600100 Length (wing) A standard measurement used in biometric science, in particular bird or insect biometrics. 2017-11-30
S0600229 Likelyhood category of death from fishing by-catch Term indicating the probability (for example: not/impossible, possible, probable, likely, definitely, unknown) that a biological organism died of accidental by-catch from fishing activities. 2019-03-16
S0600228 Likelyhood category of death from natural causes Term indicating the probability (for example: not/impossible, possible, probable, likely, definitely, unknown) that a biological organism died of natural causes. 2019-03-16
S0600231 Likelyhood category of death from predation Term indicating the probability (for example: not/impossible, possible, probable, likely, definitely, unknown) that a biological organism died following a predatory attack. 2019-03-16
S0600230 Likelyhood category of death from ship strike Term indicating the probability (for example: not/impossible, possible, probable, likely, definitely, unknown) that a biological organism died following a collision with a ship. 2019-03-16
S0600044 Lipid-normalised concentration The amount of a specified substance in a unit amount of another substance or matrix corrected for variation in lipid content. 2015-09-02
S0600255 Location (geographic coordinates) A location relative to the surface of the Earth, or other planetary or stellar body, represented by a point, line, arc, or any other type of polygon, and defined by encoding the coordinates of the location in a known Coordinate Reference System. Where possible, the Coordinate Reference System used should be specified elsewhere in the metadata by a term from a well defined and managed register such as the European Petroleum Survey Group (EPSG) Geodetic Parameter Dataset. 2020-10-20
S0600061 Log ligand binding strength The logarithmic value of the stability constant for the formation of a complex formed by the interaction of a metal ion with a ligand in solution. 2017-02-23
S0600222 Longitude east Angular distance from the Prime Meridian along a parallel of the Earth's surface, ranging from 0deg to 180deg to the east, and 0deg to -180deg to the west. 2019-01-25
S0600042 Mass The amount of a specified substance. 2015-09-02
S0600237 Mass depth Cumulative mass per unit surface of a medium or succession of media along a vertical path. 2019-04-09
S0600040 Mass ratio The calculated ratio of the amount of two specified substances. 2015-09-02
S0600073 Mole fraction Ratio of the amount expressed in moles of a component divided by the total number of moles of all constituents in a mixture. 2017-06-29
S0600071 Mole fraction at 100% humidity Ratio of the amount expressed in moles of a component divided by the total number of moles of all constituents in an air sample at 100% humidity (sometimes also labelled 'wet air'). 2017-06-29
S0600072 Mole fraction in dry air Ratio of the amount expressed in moles of a component divided by the total number of moles of all constituents in an air sample after removal of water vapour. 2017-06-29
S0600157 Name A language-dependent label that identifies an object. 2018-01-31
S0600216 Net production rate The rate at which the amount of an entity (chemical, biological) changes over time in a system. It is the resultant of the amount produced minus the amount lost or consumed. 2018-10-03
S0600144 Net vector irradiance as energy The difference between downwelling vector irradiance as energy and upwelling vector irradiance as energy. 2017-12-21
S0600235 Nominal concentration Term used to indicate that the value is an approximation of the real concentration of a substance in a solution. 2019-03-26
S0600135 Normalised water-leaving radiance Approximately the radiance that would exit the ocean in the absence of the atmosphere and with the sun at the zenith. 2017-12-19
S0600224 Northing Cartesian y co-ordinate of a point relative to a horizontal datum. 2019-01-25
S0600200 Northward Stokes drift velocity The average northward velocity when following a fluid parcel as it travels with the fluid flow. It is also defined as the difference between the average Lagrangian flow velocity of a fluid parcel and the average Eulerian flow velocity of the fluid at a fixed position. 2018-09-14
S0600154 Northward velocity The rate at which matter moves towards the North. 2018-01-12
S0600250 Northward wind stress The drag force per unit area caused by wind shear towards the compass direction of true north. 2020-02-25
S0600016 Number of clones A count of genetically identical organisms 2006-02-17
S0600234 Nutritional status category Term (free text or from a controlled vocabulary) indicating the nutritional status or emaciation score of biological organisms. 2019-03-16
S0600256 One-way travel time The time taken for an acoustic signal to travel from its source to a reflecting or refracting surface. 2020-10-20
S0600122 Orange fluorescence pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600079 Oxidation rate The speed at which a chemical species increases its oxidation number by losing electrons or, in organic chemistry, gaining oxygen or losing hydrogen. Oxidation is coupled with reduction in redox reactions. 2017-07-11
S0600047 Partial pressure The pressure exerted by a gas as part of a gas mixture. 2015-11-12
S0600150 Peak height The maximum value in a flow cytometry pulse record. 2018-01-11
S0600151 Period The interval of time between successive occurrences of an oscillatory or cyclic phenomenon. 2018-01-12
S0600189 Period at first negative spectral moment A mean wave period derived using spectral moments of order zero and -1, and defined as m-1/m0. 2018-07-17
S0600143 Period at first spectral moment A mean wave period derived from spectral moments of order zero and 1, and defined as m0/m1. It corresponds to the inverse of mean frequency. 2018-07-17
S0600225 Period at maximum recorded height A wave parameter defined as the period of the highest wave in a record. 2019-02-19
S0600145 Period at second spectral moment A mean wave period derived from spectral moments of order zero and 2, and defined as sqrt(m0/m2); approximately equivalent to the mean zero-crossing wave period Tz. 2018-07-17
S0600141 Period at spectral maximum A statistical wave parameter defined as the wave period at the peak of the spectrum (i.e. modal period). 2017-12-20
S0600093 Polymer type A character string defining a polymer type in a classification. 2017-11-25
S0600196 Potential erosion depth The potential elevation eroded from a sediment bed according to the measured properties of the bed and removed material. 2018-09-04
S0600242 Potential temperature The temperature that a parcel of air or water would have if moved adiabatically (i.e. without exchange of heat) to a standard reference pressure. 2019-06-04
S0600083 Practical salinity The quantity of dissolved ions (predominantly salt in seawater) expressed on a scale (PSS-78) based on the conductivity ratio of a seawater sample to a standard KCl solution. 2017-09-19
S0600213 Presence or absence Statement of whether an object or a phenomenon is present (boolean true) or absent (boolean false) from an observation. 2018-09-26
S0600253 Preserved wet weight The weight of a biological sample following preservation in formaldehyde (formalin) or ethanol for example. 2020-05-12
S0600168 Pressure (spatial coordinate) The vertical location of an object or an observation in a water body or in the atmosphere expressed as the pressure exerted by the water column or the atmosphere at that depth or altitude. 2018-03-14
S0600017 Production rate The rate at which a substance or an entity is produced. 2006-02-17
S0600018 Proportion A quantified subset of an entity. 2006-02-17
S0600067 Proportion by dry weight A quantified subset of an entity based on dry weight. 2017-06-28
S0600070 Proportion by number A quantified subset of an entity based on counts. 2017-06-28
S0600068 Proportion by volume A quantified subset of an entity based on volume. 2017-06-28
S0600069 Proportion by weight or volume A quantified subset of an entity based on weight or volume; usage of this code should be restricted to situations when it is not possible to know whether weight or volume was used to derive the proportion. 2017-06-28
S0600171 Proportion coverage The quantified subset of an area of substrate covered by an entity. 2018-03-26
S0600019 Proportion hatching The quantified subset of eggs hatching. 2006-02-17
S0600170 Proportion necrosis by area The quantified subset of a biological entity affected by necrosis (i.e. dead tissue) based on surface area. The proportion is often expressed as a percentage. 2018-03-26
S0600041 Proportion of total fatty acids A part or amount considered in relation to the total fatty acids in a sample or entity. A fatty acid being a carboxylic acid with a long aliphatic tail chain. 2015-09-02
S0600265 Radial velocity (away from) The rate at which matter or an object moves away from a reference point along a line connecting the reference point to the moving object or particle of matter. In radar technology it is the component of the target's motion that is along the radar beam. 2020-12-21
S0600251 Radius The distance between the centre of a sphere or a circle and any points on its perimeter. 2020-05-11
S0600187 Raw signal (arbitrary scale) The raw output of a measuring device expressed in arbitrary units that have no absolute meaning without calibration. 2018-07-06
S0600184 Raw signal (counts) The Analog-to-Digital Converter (ADC) count output of a measuring device before conversion to engineering units. 2018-07-06
S0600186 Raw signal (current) The raw current output of a measuring device before conversion to engineering units. 2018-07-06
S0600185 Raw signal (frequency) The raw frequency output of a measuring device before conversion to engineering units. 2018-07-06
S0600183 Raw signal (voltage) The raw voltage output of a measuring device before conversion to engineering units. 2018-07-06
S0600121 Red fluorescence pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600078 Reduction rate The speed at which a chemical species decreases its oxidation number by gaining electrons or, in organic chemistry, losing oxygen or gaining hydrogen. Reduction is coupled to oxidation in redox reactions. 2017-07-11
S0600159 Registered name A language-dependent label that identifies an object and is registered in a controlled vocabulary system (e.g. registry, thesaurus, dictionary). 2018-02-01
S0600158 Registered name identifier A language-independent opaque label that uniquely identifies a registered name within a controlled vocabulary system (e.g. registry, thesaurus, dictionary). 2018-02-01
S0600020 Relative abundance The number of one entity per unit area or per unit volume relative to another. 2006-02-17
S0600021 Relative hybridisation The proportion of an organism combining with a genetic probe. 2006-02-17
S0600258 Richter magnitude scale The logarithm of the amplitude of seismic waves released during a rupture of Earth's crust (earthquake), recorded by seismographs. Also known as the local magnitude scale (ML), it was developed in 1935 by Charles F. Richter. 2020-10-20
S0600052 Riverine discharge Mass or volume of a substance passing from a river into the sea usually stated over a period of time. 2016-05-01
S0600239 Root-mean-square sound pressure The square root of the mean of the variances of the instantaneous pressure of the sound signal over a given duration. 2019-04-10
S0600085 Salinity The mass of sodium chloride dissolved per unit mass of the water column (definition prior to introduction of PSS-78 Practical Salinity Scale). 2017-09-19
S0600051 Saturation A ratio of the measured concentration of a dissolved element or compund in the water to the maximum amount of that element or compound that will dissolve in the water at that temperature and pressure under stable equilibrium. 2016-05-01
S0600022 Sedimentation flux The quantity of an entity gravitationally settling through a medium per unit area per unit time. 2006-02-17
S0600267 Sensible heat flux The quantity of heat transferred from water to air per unit area per unit time caused by the difference in temperature between the sea and the air. 2021-03-13
S0600243 Serial number A number that is one of a series that identifies an object or thing from others in the series. For example, an identifier given to a manufactured part of a product line that uniquely identifies it from other parts produced in that line. 2019-07-12
S0600092 Shape class A character string defining a shape category in a classification. 2017-11-25
S0600120 Sideward light scatter pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600105 Significant wave height A statistic computed from wave measurements that correspond to the average height of the highest one third of the waves, where the height is defined as the vertical distance from a wave trough to the following wave crest. 2017-12-07
S0600023 Size A randomly-oriented measurement of the dimension of an object. 2006-02-17
S0600089 Size class A size interval defined as a character string indicating the lower size limit, the upper size limit and the unit of measurement of the upper and lower limits. 2017-11-25
S0600139 Sky radiance as energy The indirect (sky) radiance measured at a zenith angle between 30 and 50 degrees. 2017-12-19
S0600238 Sound pressure level The pressure caused by a sound wave and expressed as the logarithm of the effective sound pressure to a reference value; also called acoustic pressure level. Unless otherwise specified, pressure is expressed in root-mean-square values and the reference sound pressure is 20 micropascal for sound in air and 1 micropascal for sound in other media. 2019-04-10
S0600226 Specimen decomposition stage code A code from a known classification scale specified elsewhere in the metadata indicating the condition of decomposiion of a biological specimen. 2019-03-16
S0600107 Spectral significant wave height A computationally convenient approximation (square root of the zeroth spectral moment multiplied by 4 or 4 times the wave height standard deviation) to significant wave height. Significant wave height is a statistic computed from wave measurements that correspond to the average height of the highest one third of the waves, where wave height is defined as the vertical distance from a wave trough to the following wave crest. 2017-12-07
S0600152 Speed The rate at which matter moves. 2018-01-12
S0600245 Speed (3D resultant) Speed computed from 3 orthogonal vectors (x, y, z). 2020-02-19
S0600172 Surface area The size of the exposed surface of a 3-dimensional object. 2018-03-27
S0600259 Surface elevation The vertical distance of the surface above (positive values) or below (negative values) a fixed reference point. 2020-10-20
S0600082 Temperature The degree of hotness of an object, a measurement matrix, an environment, expressed against a standard scale. 2017-09-18
S0600160 Temperature (IPTS-68) The degree of hotness expressed against the International Practical Temperature Scale of 1968 (IPTS-68) calibration standard. 2018-02-15
S0600161 Temperature (ITS-90) The degree of hotness expressed against the International Temperature Scale of 1990 (ITS-90) calibration standard. 2018-02-15
S0600162 Temperature gradient (vertical) The rate of change in the degree of hotness along the vertical. 2018-07-24
S0600134 Total water radiance The total radiance above the water surface measured at a nadir angle between 30 and 50 degrees. 2017-12-19
S0600174 Turbidity An expression of the optical properties of a liquid that causes light rays to be scattered and absorbed rather than transmitted in straight lines through a sample. (ASTM, 2003a) 2018-04-16
S0600024 Turnover rate The rate at which a substance or an entity is consumed. 2006-02-17
S0600257 Two-way travel time The time taken for an acoustic signal to travel from its source to a reflecting or refracting surface and back to a receiver. 2020-10-20
S0600091 Type class A character string defining a type category in a classification. 2017-11-25
S0600193 Unidirectivity index A directional wave spectrum parameter defined by Barstow et al (1991) indicating the directional homogeneity of the wave field; UI=1 if all mean wave directions are aligned. 2018-07-23
S0600046 Uptake rate The speed with which a substance is taken in by cellular organisms or organs. 2015-09-29
S0600202 Upward velocity The rate at which matter moves along the vertical, in an upwards direction. 2018-09-14
S0600133 Upwelling 2-pi scalar irradiance as energy The upward hemispherical component of light as electromagnetic radiation energy. 2017-12-18
S0600128 Upwelling 2-pi scalar irradiance as photons The flux of photons reaching a downward-looking hemispherical surface. 2017-12-18
S0600138 Upwelling radiance as energy The radiative energy emitted upward from a source per unit of solid angle of a beam per unit area perpendicular to the beam. 2017-12-19
S0600132 Upwelling vector irradiance as energy The upward vertical component of light as electromagnetic radiation energy. 2017-12-18
S0600129 Upwelling vector irradiance as photons The upward vertical component of the flux of photons reaching a surface. 2017-12-18
S0600247 Velocity along x-axis The velocity of a phenomenon resolved along the x-axis of a co-ordinate system. 2020-02-19
S0600248 Velocity along y-axis The velocity of a phenomenon resolved along the y-axis of a co-ordinate system. 2020-02-19
S0600203 Vertical speed The rate at which matter moves along the vertical, either upwards or downwards. 2018-09-14
S0600163 Voltage The difference in electric potential between two points. For the raw signal output as voltage of a measuring device use S0600183 for 'Raw signal (voltage)' 2018-09-03
S0600025 Volume The amount of 3-dimensional space occupied by an object 2006-02-17
S0600136 Water-leaving radiance The radiance leaving the water as determined once the total water radiance, the sky radiance and the downwelling irradiance are known. 2017-12-19
S0600104 Wave crest height The vertical distance between a wave crest (transition between increasing water level to decreasing water level) and the calm sea surface. 2017-12-07
S0600109 Wave crest period Wave period is the time between two successive designated events in the waveform. A wave crest event is the transition between increasing water level to decreasing water level. 2017-12-07
S0600103 Wave height The vertical distance from a wave trough (transition between decreasing water level to increasing water level) to the following wave crest (transition between increasing water level to decreasing water level). 2017-12-07
S0600116 Wave level The instantaneous distance between the water surface at the point of measurement and a fixed datum such as the instrument or calm sea surface. 2017-12-07
S0600115 Wave spectral density The variance of sea surface elevation at a given frequency (wave period reciprocal) in a wave power spectrum. 2017-12-07
S0600118 Wave spectrum check factor The ratio of horizontal displacements to vertical displacements (heave) returned as a quality control check parameter by some wave recorders for each frequency band in the spectrum. 2017-12-07
S0600117 Wave steepness The ratio of the wave height divided by the wavelength. 2017-12-07
S0600110 Wavelength The physical distance between successive wave crests. 2017-12-07
S0600088 Wet weight biomass The fresh weight of a biological sample including its water content and its organic and inorganic components. 2017-10-14
S0600188 Wet weight to dry weight ratio The calculated ratio between the fresh weight and the weight after drying of a sample. 2018-07-13
S0600155 Width The side-to-side dimension of an object. 2018-01-18
S0600252 Wind-chill equivalent temperature Apparent temperature ("feels-like temperature") which would result in the same cooling effect as would be calculated from combined effect of air temperature (as per dry bulb air temperature) and wind speed. 2020-05-11
S0600123 Yellow fluorescence pulse shape areaDEPRECATED Code deprecated on 19/03/2018. Use 'Area' 2018-03-24
S0600108 Zero-crossing period A wave statistic parameter. Wave period is the time between two successive designated events in the waveform. Zero-crossing is an event where the waveform crosses the zero axis formed by the record average level in a given direction. Normally this crossing is from negative to positive known as an up-crossing. 2018-07-17
S0600191 Zero-crossing wave height Wave height derived from zero-crossing wave analysis and defined as the vertical distance between the lowest and the highest value within the wave period defined by two consecutive zero-up or zero-down-crossing points in the wave record. 2018-07-18
S0600180 sedimentDEPRECATED Physical entity consisting of disaggregated minerals or mineraloids. 2018-07-05
S0600182 sediment bedding and laminationDEPRECATED The physical structure of sediments. 2018-07-05
S0600181 sediment bioturbationDEPRECATED The reworking of sediments by animals or plants. 2018-07-05