Decreased ozone content over Western Siberia and Tomsk in winter 2017-2018 according to lidar measurements and Aura OMI/MLS data

O. E. Bazhenov

doi:10.1117/12.2504369

13 December 2018 Decreased ozone content over Western Siberia and Tomsk in winter 2017-2018 according to lidar measurements and Aura OMI/MLS data

O. E. Bazhenov

Author Affiliations +

Proceedings Volume 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 108334R (2018) https://doi.org/10.1117/12.2504369
Event: XXIV International Symposium, Atmospheric and Ocean Optics, Atmospheric Physics, 2018, Tomsk, Russian Federation

Abstract

In December 2017 and January 2018, the total ozone content was much lower than normal over Tomsk and northern territory of Russia, based on Aura OMI data. The lidar measurements of vertical ozone distribution revealed that ozone maximum shifted toward lower altitudes in January, and in December it was also smaller in magnitude. Moreover, lidar measurements showed the presence of aerosol layers over Tomsk, which, together with lowered temperatures in the stratosphere according to Aura MLS data, might signify the presence of polar stratospheric clouds (PSC). Thus, in December 2017 and January 2018 in the atmosphere over Tomsk the temperatures were much lower than normal and below PSC formation threshold, the altitude and magnitude of ozone maximum were much lower than normal, and the observation site had been under the influence of Arctic air masses with decreased ozone and increased water vapor contents.

Citation Download Citation

O. E. Bazhenov "Decreased ozone content over Western Siberia and Tomsk in winter 2017-2018 according to lidar measurements and Aura OMI/MLS data", Proc. SPIE 10833, 24th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 108334R (13 December 2018); https://doi.org/10.1117/12.2504369

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