Antarctic polar vortex dynamics in 2019 and 2020 under the influence of the subtropical stratosphere
V. V. Zuev,
E. S. Savelieva,
V. N. Krupchatnikov,
I. V. Borovko,
A. V. Pavlinsky,
O. G. Chkhetiani,
E. A. Maslennikova https://doi.org/10.30758/0555-2648-2023-69-4-452-463
Аннотация
The trend of strengthening of the Antarctic polar vortex in late spring and early summer (November–December) has been observed in recent decades. A good example of this trend is the dynamics of the Antarctic polar vortex in 2020 when it existed until the last week of December. In 2019, conversely, on the contrary, an unusually early breakup of the polar vortex occurred, a minor sudden stratospheric warming was recorded. Strengthening (or weakening) of the Antarctic polar vortex occurs as a result of an increase (or decrease) in the stratospheric meridional temperature gradient under conditions of growth (or decline) in the temperature of the lower subtropical stratosphere. We considered the temperature variations in the lower subtropical stratosphere in the spring of 2019 and 2020 and the corresponding response of the Antarctic polar vortex. The dynamics of the Antarctic polar vortex in September–October 2019 and November 2020 was largely synchronized with the temperature changes in the lower subtropical stratosphere relative to climatological means. Using correlation analysis, we show that the Antarctic polar vortex dynamics in December is largely due to the temperature changes in the lower subtropical stratosphere that occurred in the second half of November, which manifested itself in 2020.
Ключевые слова
Antarctic ozone hole,
Antarctic polar vortex,
lower subtropical stratosphere,
sudden stratospheric warming
При поддержке: This study was supported by the Russian Science Foundation (project No. 23-17-00273; https://rscf. ru/en/project/23-17-00273/).
Об авторах
V. V. Zuev
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences
Россия
Россия
Tomsk
E. S. Savelieva
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences; A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences
Россия
Россия
Tomsk
Moscow
V. N. Krupchatnikov
A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences; Institute of Computational Mathematics and Mathematical Geophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian Regional Hydrometeorological Research Institute; ovosibirsk State University
Россия
Россия
Moscow
Novosibirsk
I. V. Borovko
Institute of Computational Mathematics and Mathematical Geophysics of the Siberian Branch of the Russian Academy of Sciences; Siberian State Transport University
Россия
Россия
Novosibirsk
A. V. Pavlinsky
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences
Россия
Россия
Tomsk
O. G. Chkhetiani
A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences
Россия
Россия
Moscow
E. A. Maslennikova
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences; A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences
Россия
Россия
Tomsk
Moscow
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Рецензия
Для цитирования:
Zuev V.V., Savelieva E.S., Krupchatnikov V.N., Borovko I.V., Pavlinsky A.V., Chkhetiani O.G., Maslennikova E.A. Antarctic polar vortex dynamics in 2019 and 2020 under the influence of the subtropical stratosphere. Проблемы Арктики и Антарктики. 2023;69(4):452-463. https://doi.org/10.30758/0555-2648-2023-69-4-452-463
For citation:
Zuev V.V., Savelieva E.S., Krupchatnikov V.N., Borovko I.V., Pavlinsky A.V., Chkhetiani O.G., Maslennikova E.A. Antarctic polar vortex dynamics in 2019 and 2020 under the influence of the subtropical stratosphere. Arctic and Antarctic Research. 2023;69(4):452-463. (In Russ.) https://doi.org/10.30758/0555-2648-2023-69-4-452-463
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