Climate and Forecast Standard Names
type: ConceptScheme
has top concept: downwelling_spectral_radiance_in_air

downwelling_radiance_per_unit_wavelength_in_air
type: Concept

downwelling_spectral_radiance_in_air
type: Concept
in scheme: Climate and Forecast Standard Names
note: deprecated
deprecated: true
source: cf-standard-name-table.html
top concept of: Climate and Forecast Standard Names
is replaced by: downwelling_radiance_per_unit_wavelength_in_air
definition: Downwelling radiation is radiation from above. It does not mean 'net downward'. 'spectral' means per unit wavelength or as a function of wavelength; spectral quantities are sometimes called 'monochromatic'. Radiation wavelength has standard name radiation_wavelength. 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.