We analyze the archive data of measurements of spectral atmospheric transmittance and directed light scattering coefficients in the Southeast Kazakhstan. Based on the results of solution of the radiation transfer equation for the proposed radiation atmospheric model, the problem was considered on the daily variation of the aerosol optical thickness. Three basic data groups were proposed, corresponding to the stability of optical atmospheric mass and stepwise variations of aerosol optical thickness. When analyzing the observation data, we consider the light absorption effects, as well as the effects of multiple scattering and radiation reflection from the underlying surface.
spectral transmittance, scattering phase function, particle albedo, radiation transfer equation, coarse-dispersed and submicron aerosol