Factors determining the observed values of the asymmetry coefficients of light fluxes in the atmosphere in the near-IR region
V.V. Pashnev1, V.E. Pavlov2, S.S. Orlov1, Y.Ya. Matyuschenko1
1Altai State University, 656015, Russia, Barnaul, pr. Lenina, 61
2Institute for Water and Environmental Problems of the Siberian Branch of the Russian Academy of Sciences, 1, Molodezhnaya St., Barnaul, 656038, Altai Krai, Russia
Keywords: инфракрасная область спектра, оптические толщи молекулярного и аэрозольного рассеяния, аэрозольные модели атмосферы, альбедо подстилающей поверхности, уравнение переноса излучения, infrared region of spectrum, optical thickness of molecular and aerosol scattering, aerosol atmospheric model, albedo of underlying surface, the equation of radiation transfer
Abstract
This research is a part of the series of works devoted to the study of different factors that influence the phase function of cloudless atmosphere’s brightness: the elongation of aerosol scattering phase function, solar zenith angle, optical thickness, and albedo of underlying surface. The near-infrared region is under the analysis. While calculating the brightness of the cloudless day sky in the solar almucantar, we use the radiation transfer equation. The form of the aerosol phase function is determined by including three types of particles into the atmospheric model: submicroscopic, submicron, and coarse, as well as their mixtures in different proportions. We have received the data for a wavelength of 1.02 μm. The data may be used in atmospheric optics as an additional assessment of asymmetry of the aerosol scattering phase function and in approximate calculations of the flow of scattered solar radiation incoming to Earth’s surface.
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