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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2026. Vol 55

The Intensity of Submicron Aerosol Deposition on the Surface of Lake Baikal

Author(s)

K. A. Loshchenko1, V. L. Potemkin2, V. L. Makukhin1,2, T. G. Potemkina2

1 Irkutsk State University, Irkutsk, Russian Federation

2 Limnological Institute SB RAS, Irkutsk, Russian Federation

Abstract
The source materials for this work were the results of measurements of the number concentration of atmospheric aerosols of different dimensions over the waters of Lake Baikal, obtained during the summer expedition of 2024, conducted from July 17 to 25 on the research vessel "Akademik V. A. Koptyug". The particle sedimentation rate on the water surface was estimated by analytically solving a modified version of Fick's first law. This solution was based on the hypothesis of homogeneous isotropic atmospheric turbulence, which assumed the equality of the coefficients of eddy diffusion and turbulent viscosity of air. The functional dependence of the settling velocity of aerosol particles on environmental conditions, including air temperature, particle density and the intensity of the frictional effect of the wind flow, is shown. A review of studies on the calculation of the sedimentation rate of aerosols is provided. The correspondence of the calculated values of sedimentation rates to the results of experiments carried out in various regions of the world is established. According to the data obtained, the total aerosol concentration and particle sedimentation rate increase significantly during ship moorings near the shore, where other conditions for the formation of aerosol clouds exist. This explains the sharp heterogeneity of the aerosol particle sedimentation flows on the water surface of Lake Baikal.
About the Authors

Loshchenko Kristina Anatolevna, Candidate of Sciences (Geography), Associate Professor, Department of Meteorology and Physics of Near-Earth Space Irkutsk State University 1, K. Marx st., Irkutsk, 664003, Russian Federation e-mail: loshchenko@bk.ru

Potemkin Vladimir Lwowich, Candidate of Sciences (Geography), Senior Research Scientist, Laboratory of Hydrochemistry and Atmospheric Chemistry Limnological Institute SB RAS, 3, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation e-mail: klimat@lin.irk.ru

Makukhin Vladimir Leonidovich, Candidate of Sciences (Technical), Associate Professor Irkutsk State University 1, K. Marx st., Irkutsk, 664033, Russian Federation Limnological Institute SB RAS 3, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation e-mail: aerosol@lin.irk.ru

Potemkina Tatiana Gavrilovna, Candidate of Sciences (Geography), Senior Research Scientist Limnological Institute SB RAS 3, Ulan-Batorskaya st., Irkutsk, 664033, Russian Federation e-mail: tat_pot@lin.irk.ru

For citation
Loshchenko K.A., Potemkin V.L., Makukhin V.L. The Intensity of Submicron Aerosol Deposition on the Surface of Lake Baikal. The Bulletin of Irkutsk State University. Series Earth Sciences, 2026, vol. 55, pp. 61-72. https://doi.org/10.26516/2073-3402.2026.55.61 (in Russian)
Keywords
aerosols, sedimentation rate, Lake Baikal.
UDC
551.510.42(571.53)
DOI
https://doi.org/10.26516/2073-3402.2026.55.61
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