Record Label : surface_downwelling_radiative_flux_per_unit_wavelength_in_air
Record Title : Surface Downwelling Radiative Flux Per Unit Wavelength in Air
CF Standard Name : surface_downwelling_radiative_flux_per_unit_wavelength_in_air
Record Description : 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. When thought of as being incident on a surface, a radiative flux is sometimes called "irradiance". In addition, it is identical with the quantity measured by a cosine-collector light-meter and sometimes called "vector irradiance". In accordance with common usage in geophysical disciplines, "flux" implies per unit area, called "flux density" in physics. A coordinate variable for radiation wavelength should be given the standard name radiation_wavelength.
Canonical Units : W m-2 m-1