Extinction and scattering of optical radiation under smoke and clean conditions

Victor N. Uzhegov; Mikhail V. Panchenko; Vasiliy V. Polkin; Viktor V. Polkin; Yuriy A. Pkhalagov; Aleksandr G. Tumakov; Vladimir P. Shmargunov

doi:10.1117/12.2075150

25 November 2014 Extinction and scattering of optical radiation under smoke and clean conditions

Victor N. Uzhegov, Mikhail V. Panchenko, Vasiliy V. Polkin, Viktor V. Polkin, Yuriy A. Pkhalagov, Aleksandr G. Tumakov, Vladimir P. Shmargunov

Author Affiliations +

Proceedings Volume 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 92922T (2014) https://doi.org/10.1117/12.2075150
Event: 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2014, Novosibirsk, Russian Federation

Abstract

A comparison of the measured spectral aerosol extinction coefficients β_a(λ) and scattering coefficients directed β_S(θ). Coefficients β_a(λ) were obtained from measurements of atmospheric transmission on horizontal path length of 1 km for wavelengths from 0.45 to 3.9 microns. Scattering coefficients βS (θ) were measured in the angular range from 1 to 15 ° at a wavelength of 0.53 μm. The data were obtained under conditions of forest fire smokes in July 2012 and in clean conditions in April 2013 (706 and 204 realizations, respectively). Under clean conditions, 82% of variations of the extinction of radiation in the whole wavelength range are caused by variability of coarse aerosol, and 98% of variations under smoke conditions are related to submicrometer particles.

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Victor N. Uzhegov, Mikhail V. Panchenko, Vasiliy V. Polkin, Viktor V. Polkin, Yuriy A. Pkhalagov, Aleksandr G. Tumakov, and Vladimir P. Shmargunov "Extinction and scattering of optical radiation under smoke and clean conditions", Proc. SPIE 9292, 20th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 92922T (25 November 2014); https://doi.org/10.1117/12.2075150

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