Dataset of the regional reanalysis COSMO-REA6.
rsus (Surface Upwelling Shortwave Radiation in modeling realm(s) atmos):
The surface called surface means the lower boundary of the atmosphere. shortwave means shortwave radiation. Upwelling radiation is radiation from below. It does not mean net upward. 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.
COSMO model original name(s): ASWDIR_S, ASWDIFD_S, ASOB_S
Diagnostic recipe: "rsus=ASOB_S-ASWDIR_S-ASWDIFD_S"
Additional diagnostic: Altered positive flux direction from "down" to "up".