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Atmospheric and Oceanic Optics

2018 year, number 11

Variability of microstructure parameters of the near-surface aerosol in the summer period retrieved by inverting the spectral extinction measurements along a horizontal path in Tomsk. Part II. Volume concentration and mean radius of particles

V.V. Veretennikov, S.S. Men’shchikova, V.N. Uzhegov
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
Keywords: коэффициент аэрозольного ослабления света, микроструктура приземного аэрозоля, объемная концентрация, средний радиус частиц, обратные задачи, aerosol extinction coefficient, near-surface aerosol microstructure, volume concentration, mean radius of particles, inverse problem


The variability of the volume concentration and the mean radius of the fine and coarse fractions of near-surface aerosol is studied based on solution of the inverse problem for spectral measurements of aerosol extinction coefficient. It is shown that coarse particles make the main contribution (80%) to the total volume of the near-surface aerosol. The mean radius of fine particles varies in the range from 0.08 to 0.25 μm. The range of variation in the mean radius of the coarse aerosol is 1.06-3 μm. The influence of atmosphere smoke on the variation of microstructure parameters of the aerosol is considered. The variability of the retrieved microstructure parameters of near-surface aerosol is compared with similar results obtained from solar spectrophotometry.