surface_upwelling_shortwave_flux_in_air_due_to_fluorescence under discussion
Created: April 19, 2016
Proposer: Maarten Sneep
Proposed Date: 2016-03-10
Change Date: April 19, 2016, 2:25 p.m.
Unit: mol s-2 m-2 m-1 sr-1
The surface called "surface" means the lower boundary of the atmosphere. "shortwave" means shortwave radiation. Upwelling radiation is radiation from below. It does not mean "net upward". 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. 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 fluorescence is caused by chlorophyll.