If the sky is cloud free and we have snow on a flat surface and no crops or vegetation on it and it has a surface emissivity of 0.96 and albedo of 96% and you have the following numbers:

Atmospheric direct beam shortwave transmissivity is 0.6

Diffuse shortwave coefficient is 0.2

The incoming solar radiation at the top of the atmosphere is 1000 w/m2

Calculate the following:

A. Incoming longwave radiation at surface
B. Outgoing longwave radiation from the surface
C. Incoming shortwave radiation at surface
D. Net radiation