Comparison of 2011 and 2020 ozone anomalies in the stratosphere of the Arctic and northern Eurasia using Aura MLS Data

O. E. Bazhenov; O. V. Kharchenko

doi:10.1117/12.2690119

17 October 2023 Comparison of 2011 and 2020 ozone anomalies in the stratosphere of the Arctic and northern Eurasia using Aura MLS Data

O. E. Bazhenov, O. V. Kharchenko

Author Affiliations +

Proceedings Volume 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 127802L (2023) https://doi.org/10.1117/12.2690119
Event: XXIX International Symposium "Atmospheric and Ocean Optics, Atmospheric Physics", 2023, Moscow, Russian Federation

Abstract

In winters-springs 2019-2020 and 2010-2011 there were the strongest ozone anomalies in the Arctic in the total satellite era. They were due to extraordinarily strong and long-lived polar vortices, entailing unprecedented chemical ozone destruction. The Aura MLS data indicate that the minimal temperature was 8-13% below normal over the Arctic in 2020 and 8–12% below normal in 2011. The ozone mixing ratios dropped to 4% of the multiyear average at the altitude of 20 km on March 27, 2020 and to 25% at the altitude of 21 km on March 20, 2011 for Eureka; to 3% at the altitude of 20 km on March 27, 2020 and to 26% at the altitude of 21 km on March 21, 2011 for Thule; and to 1% at the altitude of 20 km on April 5, 2020 and to 27% at the altitude of 20 km on March 23, 2011 for Summit.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

O. E. Bazhenov and O. V. Kharchenko "Comparison of 2011 and 2020 ozone anomalies in the stratosphere of the Arctic and northern Eurasia using Aura MLS Data", Proc. SPIE 12780, 29th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 127802L (17 October 2023); https://doi.org/10.1117/12.2690119

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