RADSUM calculates fluxes and cooling rates from LBLRTM radiances for user-defined spectral intervals.

Key features of RADSUM are:

• Converts spectral radiances calculated by the line-by-line model, LBLRTM, to fluxes and cooling rates using three-angle Gaussian quadrature.
• Output fluxes and cooling rates are averaged over selectable spectral intervals in multiples of 0.5 cm^-1.