Concept
Volume backwards scattering coefficient of radiative flux in air due to pm2p5 ambient aerosol particles at standard temperature and pressure
| URI | http://vocab.nerc.ac.uk/standard_name/volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Definition | The volume scattering/absorption/attenuation coefficient is the fractional change of radiative flux per unit path length due to the stated process. Coefficients with canonical units of m2 s-1 i.e. multiplied by density have standard names with specific_ instead of volume_. Backwards scattering refers to the sum of scattering into all backward angles i.e. scattering_angle exceeds pi/2 radians. A scattering_angle should not be specified with this quantity. The scattering/absorption/attenuation coefficient is assumed to be an integral over all wavelengths, unless a coordinate of radiation_wavelength is included to specify the wavelength. Radiative flux is the sum of shortwave and longwave radiative fluxes. "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. To specify the relative humidity at which the sample was measured, provide a scalar coordinate variable with the standard name of "relative_humidity". 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. "Pm2p5 aerosol particles" means atmospheric particulate compounds with an aerodynamic diameter of less than or equal to 2.5 micrometers. "Standard_temperature_and_pressure" refer to a reference volume at 273.15 K temperature and 1013.25 hPa pressure. | ||
| Date | None | ||
| Note | accepted | ||
| modified | 2024-05-20 20:39:48.0 | ||
| Exact Match | http://mmisw.org/ont/cf/parameter/volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure | ||
| http://vocab.nerc.ac.uk/standard_name/volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure/ | |||
P07:YBDXSUJP |
volume_backwards_scattering_coefficient_of_radiative_flux_in_air_due_to_pm2p5_ambient_aerosol_particles_at_standard_temperature_and_pressure | ||
| Related | P06:UPRM |
per metre | |
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