State of stratospheric aerosol layer over Tomsk using measurements at Siberian Lidar Station

A. V. Nevzorov; S. I. Dolgii; A. P. Makeev

doi:10.1117/12.2601831

15 December 2021 State of stratospheric aerosol layer over Tomsk using measurements at Siberian Lidar Station

A. V. Nevzorov, S. I. Dolgii, A. P. Makeev

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 119162A (2021) https://doi.org/10.1117/12.2601831
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

In the report we analyze the data from lidar measurements of aerosol optical characteristics over Tomsk. Based on time series of long-term measurements of integrated aerosol backscattering coefficient 𝐵π 𝑎 (see PDF) , for the background state of the stratosphere we constructed the linear regressions for the period of 1986 – 1991 with stratospheric aerosol (SA) content decreasing at a rate of −5.1 ∙ 10⁻⁷sr^-1 per decade; for the period of 2000 - 2006 with SA decreasing at a rate of −6.31 ∙ 10⁻⁸ sr^-1 per decade; for the period of 2012 – 2017 with SA decreasing at a rate of −1.79 ∙ 10⁻⁸ sr^-1 per decade; as well as for the period of 2018 - 2021. After products from 2017 forest fires in North America were observed at SLS in Tomsk, since 2018 SA has started growing at a rate of 4.8 ∙ 10⁻⁷sr^-1 per decade. We corrected the regional empirical model of background stratospheric aerosol, which we developed in 2000-2017, by complementing it with measurements from 2017 to 2021.

Citation Download Citation

A. V. Nevzorov, S. I. Dolgii, and A. P. Makeev "State of stratospheric aerosol layer over Tomsk using measurements at Siberian Lidar Station", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 119162A (15 December 2021); https://doi.org/10.1117/12.2601831

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