Concept
downwelling_photosynthetic_radiance_in_sea_water
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CFSN0679/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Alternative Labels | |||
| 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. 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. | ||
| Date | 2018-07-03T16:09:23 | ||
| Identifier | SDN:P07::CFSN0679 | ||
| Note | accepted | ||
| Has Current Version | 3 | ||
| Version | 1 , 2 | ||
| version | 3 | ||
| Same As | MMI | http://mmisw.org/ont/cf/parameter/downwelling_photosynthetic_radiance_in_sea_water | Mapping: 262018 |
| CF | http://vocab.nerc.ac.uk/standard_name/downwelling_photosynthetic_radiance_in_sea_water/ | Mapping: 379968 | |
| Broader | P02:VSRW |
Visible waveband radiance and irradiance measurements in the water column | Mapping: 32844 |
| P04 Global Change Master Directory Science Keywords V5 - (2) | |||
| P64 Global Change Master Directory Science Keywords V6 - (2) | |||
| Related | P06:WMSS |
Watts per square metre per steradian | Mapping: 162311 |
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