Concept
mass_fraction_of_pm10_primary_particulate_organic_matter_dry_aerosol_particles_in_air
| URI | http://vocab.nerc.ac.uk/collection/P07/current/4H65VZPH/2/ | |
|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | |
| Alternative Labels | ||
| Definition | Mass fraction is used in the construction "mass_fraction_of_X_in_Y", where X is a material constituent of Y. It means the ratio of the mass of X to the mass of Y (including X). 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". "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. "Pm10 aerosol" is an air pollutant with an aerodynamic diameter of less than or equal to 10 micrometers. "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. | |
| Date | None | |
| Identifier | 4H65VZPH | |
| Note | accepted | |
| Is Version Of | 4H65VZPH | |
| version | 2 | |
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