Time Variations in Submicron and Coarse Particle Concentrations in the Surface Air Layer at the Aerosol Station of Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, Tomsk (2000–2020)

• Published in: Atmospheric and oceanic optics Vol. 35; no. 6; pp. 661 - 666
• Main Authors: Pol’kin, V. V., Panchenko, M. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.12.2022; Springer Nature B.V
• Subjects: Aerosols; Atmospheric optics; Datasets; Hydrosoles; Lasers; Long-term changes; Optical Devices; Optics; Optics of Clusters; Photonics; Physics; Physics and Astronomy; Probability theory; Spectral analysis; Spectrum analysis; submicron and coarse atmospheric aerosol; background aerosol; time variations; Western Siberia
• ISSN: 1024-8560; 2070-0393
• DOI: 10.1134/S1024856022060185

We analyze the long-term variations in the microstructural characteristics of aerosol in the surface air layer measured in the monitoring mode at the Aerosol Station of V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, in 2000–2020. Estimates are carried out based on the following characteristics: the concentrations of submicron N f and coarse N c particles and their ratio N f  / N c . Two datasets are considered: “total” and separately for the “background” type of the “aerosol weather.” The variability range of the annual average values of the total concentration of particles N ( r > 0.2 μm) is found to be 8–50 cm −3 , and the aerosol concentrations for the background situations is 5–30 cm −3 . No reliable long-term trends in the characteristics under study are revealed. Spectral analysis of the monthly average concentrations for the background dataset showed the presence of a significant (with the 0.95 probability) time period of about a year for N f  / N c and N f and its absence for N c .