The modeling results of solar radiation fluxes of 0.2-5 mm in the cloudless atmosphere, using altitude distribution models of temperature, pressure, water vapour concentration for summer (July) and winter (January) conditions of Western Siberia and AFGL latitudinal meteorological models are presented. A comparison of upward and downward fluxes, calculated with different altitude profiles of water vapour concentration at the constant value of H2O atmospheric total column amount is carried out. To increase the efficiency of mass radiative calculations, the electronic archive, containing the approximation of the atmospheric gases transmission function by a series of exponents for basic set of the water vapour total column amount values in range of 0.5-3 g/cm2, using the spectroscopic database HITRAN-2008, is created.
altitude profiles, concentration, atmospheric radiative transfer, water vapour