Concept
surface_downwelling_photosynthetic_radiance_in_sea_water
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CFSN0288/2/ | |
|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | |
| Alternative Labels | ||
| Definition | The surface called "surface" means the lower boundary of the atmosphere. Downwelling radiation is radiation from above. It does not mean "net downward". 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. "Photosynthetic" radiation is the part of the spectrum which is used in photosynthesis e.g. 400-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_wavelength. In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. | |
| Date | None | |
| Identifier | CFSN0288 | |
| Note | accepted | |
| Is Version Of | CFSN0288 | |
| version | 2 | |
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