Measurements of characteristics of stratospheric aerosol layer at Siberian lidar station in Tomsk

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

doi:10.1117/12.2539097

18 December 2019 Measurements of characteristics of stratospheric aerosol layer at Siberian lidar station in Tomsk

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

Proceedings Volume 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 112082X (2019) https://doi.org/10.1117/12.2539097
Event: XXV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2019, Novosibirsk, Russian Federation

Abstract

In this report we present an analysis of lidar measurements of aerosol optical characteristics in the stratosphere over Tomsk, based on which we determined the periods of increased aerosol content after anomalous aerosol layers of nonvolcanic origin from severe forest fires in Canada were recorded in summer-fall period of 2017. Owing to the pyroconvection, the fire products were lifted to the stratosphere and spread over the entire Northern Hemisphere. The thickness of the recorded aerosol layers of non-volcanic origin was comparable to that produced by one of volcanoes in Pacific Ring of Fire in 2006-2012. A background state of aerosol loading has been established in the stratosphere over Tomsk since November 2017. Time series of long-term measurements of integrated aerosol backscattering coefficient В^a_π for the background stratospheric state from 2012 to July 2017 was used to construct a linear regression of the form В^a_π=2.2213•10⁻⁴−1.7936•10^-7•t.
Our regional empirical model of background stratospheric aerosol for 2000-2016 was corrected to include the measurements from 2016 to 2019.

Citation Download Citation

A. V. Nevzorov, S. I. Dolgii, A. P. Makeev, and A. A. Nevzorov "Measurements of characteristics of stratospheric aerosol layer at Siberian lidar station in Tomsk", Proc. SPIE 11208, 25th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 112082X (18 December 2019); https://doi.org/10.1117/12.2539097

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