GCM, far‐IR radiation, scattering, polar climate, surface emissivity, Clouds, Snow, Geophysics, Meteorology, Radiations, Spectral emissivity, Sky, Monthly, General circulation models, Atmospheric models, Refractivity, Radiation, Properties, Cloud particles, Elevation, Reduction, Winter, Polar environments, Plateaux, Radiative transfer, Budgeting, Budgets, Fl...