Concept
surface_downwelling_photosynthetic_spherical_irradiance_in_sea_water
| URI | http://vocab.nerc.ac.uk/collection/P07/current/CFSN0272/1/ | |
|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | |
| Alternative Labels | ||
| Definition | The surface called 'surface' means the lower boundary of the atmosphere. 'Water' means water in all phases, including frozen i.e. ice and snow. Downwelling radiation is radiation from above. It does not mean 'net downward'. 'Photosynthetic' radiation is the part of the spectrum which is used in photosynthesis e.g. 300-700 nm. The range of wavelengths could be specified precisely by the bounds of a coordinate of radiation_wavelength. Spherical irradiance is the radiation incident on unit area of a hemispherical (or '2-pi') collector. It is sometimes called 'scalar irradiance'. The direction (up/downwelling) is specified. Radiation incident on a 4-pi collector has standard names of 'omnidirectional spherical irradiance'. | |
| Date | None | |
| Identifier | CFSN0272 | |
| Note | accepted | |
| Is Version Of | CFSN0272 | |
| version | 1 | |
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