Contribution of water vapour continual absorption to shortwave fluxes of solar radiation in the Earth’s atmosphere with cirrus cloudiness
K.M. Firsov1, T.Yu. Chesnokova2, A.A. Razmolov1, A.V. Chentsov2
1Volgograd State University, 100, prospect Universitetsky, Volgograd, 400062, 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: континуальное поглощение, водяной пар, коротковолновые потоки излучения, облачность, continual absorption, water vapour, shortwave radiative fluxes, cloudiness
Subsection: OPTICAL WAVE PROPAGATION
Abstract
The solar radiative fluxes in the cloudy and cloudless atmosphere are calculated taking into account multiple scattering and absorption. The cloudy conditions observed in Tomsk and Volgograd regions are considered. A comparison between the fluxes calculated with different water vapor continuum absorption models, such as the MT_CKD empirical model, commonly used in the atmospheric simulation, and the continuum model based on the CAVIAR experimental data, is carried out. The water vapor continuum impact on the shortwave radiative fluxes in the presence of different cloud types is estimated.
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