Vestnik КRAUNC. Fiz.-Mat. nauki. 2024. vol. 47. no. 2. P. 106 – 116. ISSN 2079-6641

PHYSICS
https://doi.org/10.26117/2079-6641-2024-47-2-106-116
Research Article
Full text in Russian
MSC 86A10

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Lidar studies of the vertical distribution of aerosol in the stratosphere over Тomsk in 2023

V. N. Marichev^\ast, D. A. Bochkovsky

V.E. Zuev Institute of Atmospheric Optics SB RAS (IAO SB RAS), 634055, Tomsk, Academician Zuev square, 1, Russia

Abstract. The article presents studies of the intra-annual variability of the vertical-temporal structure of the background aerosol and its integral content in the stratosphere based on an analysis of the optical characteristics of the aerosol. The results were obtained at the lidar complex of the station for high-altitude atmospheric sounding of the IAO SB RAS for 2023. The sounding was carried out at night, the sounding altitude range was from 10 to 50 km. The optical characteristic R(H) — aerosol scattering ratio – is presented as a parameter describing the vertical stratification of the aerosol. According to monitoring data, as in previous years, a stable tendency for aerosol accumulation in the lower stratosphere during the cold period of the year with maximum content in January ( R \approx 1.5 at altitudes of 10–30 km) has been established. In March, a decrease begins, and the vertical stratification of aerosol is estimated at an average value of R \approx 1.2 in the 10-20 km layer, to virtual absence in June-July ( R \leq 1.1 ). From September, the aerosol content in the lower stratosphere begins to increase to its maximum value in winter. In the upper stratosphere (30-50 km) there is virtually no background aerosol throughout the year. As a comparative analysis and control over the temporal dynamics of the aerosol filling of the stratosphere, the article provides parameter B – the integral aerosol backscatter coefficient for the period from 2017 to the beginning of 2024. In general, over the years, the maximum aerosol filling of the stratosphere occurs in the winter months and is centered relative to January. At the same time, it is unevenly distributed over the years and is marked by sharp and significant fluctuations.

Key words: stratosphere, aerosol, lidar.

Received: 18.06.2024; Revised: 12.08.2024; Accepted: 17.08.2024; First online: 26.08.2024

For citation. Marichev V. N., Bochkovsky D. A. Lidar studies of the vertical distribution of aerosol in the stratosphere over Тomsk in 2023. Vestnik KRAUNC. Fiz.-mat. nauki. 2024, 47: 2, 106-116. EDN: FDVVKM. https://doi.org/10.26117/2079- 6641-2024-47-2-106-116.

Funding. The research was carried out within the framework of the project of the state assignment of the IOA SB RAS

Competing interests. There are no conflicts of interest regarding authorship and publication.

Contribution and Responsibility. All authors contributed to this article. Authors are solely responsible for providing the final version of the article in print. The final version of the manuscript was approved by all authors.

^\astCorrespondence: E-mail: marichev@iao.ru

The content is published under the terms of the Creative Commons Attribution 4.0 International License.

© Marichev V. N., Bochkovsky D. A., 2024

© Institute of Cosmophysical Research and Radio Wave Propagation, 2024 (original layout, design, compilation)

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Information about the authors

Marichev Valeriy Nikolaevich – D. Sci. (Phys. & Math.), Professor, Chief scientific researcher, V.E. Zuev Institute of Atmospheric Optics SB RAS (IAO SB RAS), Tomsk, Russia, ORCID 0000-0002-7367-6605.


Bochkovskiy Dmitriy Andreevich – PhD (Tech.), Researcher, V.E. Zuev Institute of Atmospheric Optics SB RAS (IAO SB RAS), Tomsk, Russia, ORCID 0000-0002-9127-2065.