Concept
surface_direct_downwelling_shortwave_flux_in_air
| URI | http://vocab.nerc.ac.uk/collection/P07/current/D6W2P30Q/ |
|---|---|
| Within Vocab | Climate and Forecast Standard Names |
| Preferred Label | surface_direct_downwelling_shortwave_flux_in_air |
| Definition | The surface called "surface" means the lower boundary of the atmosphere. "Direct" (also known as "beam") radiation is radiation that has followed a direct path from the sun and is alternatively known as "direct insolation". 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. |
| Same As |
http://mmisw.org/ont/cf/parameter/surface_direct_downwelling_shortwave_flux_in_air standard_name: Surface direct downwelling shortwave flux in air |
| Related |
P06:
Watts per square metre |
| Note | accepted |
| Deprecated | false |
| Alternative Label | |
| Version | 2 |
| Has Current Version | http://vocab.nerc.ac.uk/collection/P07/current/D6W2P30Q/2/ |
| Authored On | 2018-07-03 16:09:23 |
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