Concept
Surface downwelling photon spherical irradiance per unit wavelength in sea water
| URI | http://vocab.nerc.ac.uk/standard_name/surface_downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water/ | ||
|---|---|---|---|
| Within Vocab | Climate and Forecast Standard Names | ||
| Definition | The surface called "surface" means the lower boundary of the atmosphere. 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 | surface_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/surface_downwelling_photon_spherical_irradiance_per_unit_wavelength_in_sea_water | ||
| http://vocab.nerc.ac.uk/standard_name/surface_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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