Fitting of the particle size distributions by lognormal functions in the frameworks of empirical classification of the “aerosol weather” types

Viktor V. Pol'kin; Mikhail V. Panchenko

doi:10.1117/12.2540606

18 December 2019 Fitting of the particle size distributions by lognormal functions in the frameworks of empirical classification of the “aerosol weather” types

Viktor V. Pol'kin, Mikhail V. Panchenko

Author Affiliations +

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 1120847 (2019) https://doi.org/10.1117/12.2540606
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

Variability of the volume distribution functions in the submicron and coarse size ranges in each season and under four type of “aerosol weather”: «background», «Haze-S», «Smog» и «Smoke haze» is analyzed on the basis of the data on daily mean values of the number concentration of the near-ground atmospheric aerosol obtained by means of an optical counter at the Aerosol Monitoring Station of IAO SB RAS in 2000-2017. The analyzed data arrays were formed in the «σ_d–Р» coordinates, where σ_d is the scattering coefficient of the aerosol dry matter at the wavelength of λ = 0.51 μm), P is the ratio of the mass concentration of the absorbing substance to the mass concentration of submicron particles. The fitting of the particle volume distribution was carried out as a superposition of two broad lognormal distributions of submicron and coarse particles. The average values of the fitting parameters are presented for all seasons (winter, spring, summer, autumn) and all types of the aerosol weather.

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Viktor V. Pol'kin and Mikhail V. Panchenko "Fitting of the particle size distributions by lognormal functions in the frameworks of empirical classification of the “aerosol weather” types", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 1120847 (18 December 2019); https://doi.org/10.1117/12.2540606

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