Concept
Downwelling photon spherical irradiance per unit wavelength in sea water
| URI | http://vocab.nerc.ac.uk/standard_name/downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| 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. Photon spherical irradiance is the photon flux incident on unit area of a hemispherical (or "2-pi") collector. The direction ("up/downwelling") is specified. Radiation incident on a 4-pi collector has a standard name referring to "omnidirectional spherical irradiance". A photon flux is specified in terms of numbers of photons expressed in moles. | ||
| Date | None | ||
| Note | accepted | ||
| modified | 2018-07-03 16:09:23.0 | ||
| replaces | downwelling_spectral_photon_spherical_irradiance_in_sea_water | ||
| Broad Match | P02:VSRW |
Visible waveband radiance and irradiance measurements in the water column | |
| Exact Match | http://mmisw.org/ont/cf/parameter/downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water | ||
| http://vocab.nerc.ac.uk/standard_name/downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water/ | |||
| P07 Climate and Forecast Standard Names - (2) | |||
| Related | P06:M2MM |
Moles per square metre per second per metre | |
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