Concept
downwelling_radiance_per_unit_wavelength_in_air
| URI | http://vocab.nerc.ac.uk/collection/P07/current/HLKZ2VSL/ |
|---|---|
| Within Vocab | Climate and Forecast Standard Names |
| Preferred Label | downwelling_radiance_per_unit_wavelength_in_air |
| Definition | 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. A coordinate variable for radiation wavelength should be given the standard name radiation_wavelength. Radiance is the radiative flux in a particular direction, per unit of solid angle. The direction from which it is coming must be specified, for instance with a coordinate of zenith_angle. If the radiation does not depend on direction, a standard name of isotropic radiance should be chosen instead. |
| Same As |
http://mmisw.org/ont/cf/parameter/downwelling_radiance_per_unit_wavelength_in_air P07: downwelling_spectral_radiance_in_air standard_name: Downwelling radiance per unit wavelength in air |
| Broader |
P02:
Visible waveband radiance and irradiance measurements in the atmosphere |
| Related |
P06:
Watts per square metre per metre per steradian |
| Note | accepted |
| Deprecated | false |
| Alternative Label | |
| Version | 2 |
| Has Current Version | http://vocab.nerc.ac.uk/collection/P07/current/HLKZ2VSL/2/ |
| Authored On | 2018-07-03 16:09:23 |
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