Role of water vapor continual absorption in the atmospheric longwave radiative processes of the surface layer in the Lower Volga region
K.M. Firsov1, T.Yu. Chesnokova2, E.V. Bobrov1
1Volgograd State University, 100, Universitetskij avenue, 400062, Volgograd, Russia
2V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: continual absorption, transfer of radiation, radiative forcing
Abstract
Analytical formulae to estimate a sensitivity of downward longwave radiative fluxes to the atmospheric total water vapor content in the absorption bands and the atmospheric transparency windows are obtained. A regression dependence of the CO2 radiative forcing on total water vapor content for the Lower Volga region is calculated. The role of Н2О continual absorption is investigated and it is shown that the CO2 radiative forcing depends strongly on the continuum value. The atmospheric conditions are defined, when the contribution of the H2O foreign continuum to the downward radiative fluxes is maximal.
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