GRIB-API definition

NameAccumulated downward long-wave radiation flux, clear skyAbbreviationadlwrf_csUnitJ m-2paramId:260428


UERRA details

DefinitionDownward clear-sky thermal (long-wave) radiation at the surface (assuming transparent clouds).
Validityaccumulated (from the beginning of the forecast)
CommentThe flux sign convention is positive downwards.

 

WMO GRIB2 definition

Parameter
Discipline0meteorological products
Parameter category5long-wave radiation
Parameter number8

Downward long-wave radiation flux, clear sky**

Type of statistical processing1accumulated
Level
Type of first fixed surface1
ground or water surface
Scale factor of first fixed surfaceall bits to 1missing
Scaled value of first fixed surfaceall bits to 1missing
Type of second fixed surfaceall bits to 1missing
Scale factor of second fixed surfaceall bits to 1missing
Scaled value of second fixed surfaceall bits to 1missing

**newly approved  by WMO (release in May 2016)