Abstract: Based on the results of solving the radiation transfer equation in a cloudless atmosphere, an approximate method has been developed for estimating the asymmetry coefficients of scattered light on aerosol particles at wavelengths of 0.675, 0.870 and 1.02 μm. The shape of the model aerosol indicatrix of scattering in the transport equation corresponds to the presence in the atmosphere of three groups of particles: ultramicroscopic, submicron and coarse-dispersed, as well as their mixtures in different proportions. The developed method is designed to use the observations of the transparency (optical depths) of the atmosphere, the brightness of the daytime sky and the albedo of the underlying surface at fixed zenith angles of the Sun. It is shown that, based on observations of the angular dependence of brightness in any units, it is possible to determine the asymmetry coefficients of a single aerosol light scattering by interpolation. The results of calculations in the form of tables for performing the necessary intermediate operations are given.
Index terms: red and near infrared spectral regions, optical thick of molecular and aerosol scattering, aerosol models of the atmosphere, albedo of the underlying surface, radiation transfer equation.