Diurnal behavior of hygro- and thermooptical parameters of near-ground aerosol in winter 2019-2020

Svetlana A. Terpugova; Mikhail V. Panchenko; Valerii S. Kozlov; Vladimir P. Shmargunov; Sergey P. Kuryshev

doi:10.1117/12.2574846

12 November 2020 Diurnal behavior of hygro- and thermooptical parameters of near-ground aerosol in winter 2019-2020

Svetlana A. Terpugova, Mikhail V. Panchenko, Valerii S. Kozlov, Vladimir P. Shmargunov, Sergey P. Kuryshev

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115603E (2020) https://doi.org/10.1117/12.2574846
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

Automated round-the-clock measurements were carried out in November 2019 till February 2020 with artificial humidification and heating of the aerosol collected from the atmosphere. The parameter of condensation activity γ, which characterizes the variability of the scattering coefficient with variations in relative humidity, and the thermo-optical parameters determined by the decrease in the volume concentration of particles in the corresponding temperature range were analyzed. The diurnal behavior of γ is characterized by a maximum at 5-9 a.m., exceeding the average daily value by ~10% and a minimum at 8-10 p.m. (also ~10%). In the evening, the fraction of substances volatilizing at temperatures of 100-250°C also decreases and the fraction of substances evaporating at T <100°C increases.

Citation Download Citation

Svetlana A. Terpugova, Mikhail V. Panchenko, Valerii S. Kozlov, Vladimir P. Shmargunov, and Sergey P. Kuryshev "Diurnal behavior of hygro- and thermooptical parameters of near-ground aerosol in winter 2019-2020", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115603E (12 November 2020); https://doi.org/10.1117/12.2574846

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