diffuse_downwelling_shortwave_flux_in_air
completeCreated: June 21, 2018
Proposer: Alison Pamment / Robert Pincus
Proposed Date: 2018-06-21
CMIP6 - RFMIP. Correct the definition of 'diffuse radiation'.
Change Date: June 21, 2018, 2:32 p.m.
Term: diffuse_downwelling_shortwave_flux_in_air
Unit: W m-2
Unit ref:
AMIP:
GRIB:
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. "shortwave" means shortwave radiation. "Diffuse" radiation is radiation that has been scattered by particles in the atmosphere such as cloud droplets and aerosols.
Change Date: June 21, 2018, 2:35 p.m.
Term: diffuse_downwelling_shortwave_flux_in_air
Unit: W m-2
Unit ref: UFAA
AMIP:
GRIB:
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. The term "shortwave" means shortwave radiation. "Diffuse" radiation is radiation that has been scattered by gas molecules in the atmosphere and by particles such as cloud droplets and aerosols.
Change Date: July 2, 2018, 2:22 p.m.
Term: diffuse_downwelling_shortwave_flux_in_air
Unit: W m-2
Unit ref: UFAA
AMIP:
GRIB:
"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.