Peculiarities of the diurnal dynamics of the aerosol optical thickness of the atmosphere in IR wavelength range and its physical interpretation

Yu. A. Pkhalagov; V. N. Uzhegov; S. M. Sakerin; D. M. Kabanov; S. L. Odintsov

doi:10.1117/12.675331

21 April 2006 Peculiarities of the diurnal dynamics of the aerosol optical thickness of the atmosphere in IR wavelength range and its physical interpretation

Yu. A. Pkhalagov, V. N. Uzhegov, S. M. Sakerin, D. M. Kabanov, S. L. Odintsov

Author Affiliations +

Proceedings Volume 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 61601M (2006) https://doi.org/10.1117/12.675331
Event: Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2005, Tomsk, Russian Federation

Abstract

Analysis is carried out of the diurnal dynamics of the aerosol optical thickness of the atmosphere τ^A(λ) and the aerosol extinction coefficients in the near-ground layer α(λ) in the wavelength range λ = 0.44 - 1.06 μm, as well as of the vertical turbulent heat flux, measured simultaneously in June 2004 in the region of Tomsk. It is revealed that aerosol extinction in the near-ground layer in the range λ = 1.06 μm under conditions of small cloud fraction continuously increases during a day, but the aerosol optical thickness increases before 12-2 p.m., and then rapidly decreases. Probably, this fact is one of the factors of weak correlation between variations of the aerosol extinction of optical radiation on a near-ground path and in the atmospheric column. It is shown that the diurnal dynamics of τ^A(1.06) well correlates with the dynamics of the vertical turbulent heat flux.

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Yu. A. Pkhalagov, V. N. Uzhegov, S. M. Sakerin, D. M. Kabanov, and S. L. Odintsov "Peculiarities of the diurnal dynamics of the aerosol optical thickness of the atmosphere in IR wavelength range and its physical interpretation", Proc. SPIE 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 61601M (21 April 2006); https://doi.org/10.1117/12.675331

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