Vol. 33, issue 01, article # 7

Saveljeva E. S. Dynamics of the Antarctic polar vortex during the 2002 sudden stratospheric warming. // Optika Atmosfery i Okeana. 2020. V. 33. No. 01. P. 50–55. DOI: 10.15372/AOO20200107 [in Russian].
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In September 2002, the sudden stratospheric warming (SSW) was observed over the Antarctic as a result of the polar vortex splitting. The unusually early breakdown of the Antarctic polar vortex in spring 2002 was caused by the increased activity of vertically propagating planetary waves. The dynamics of the south polar vortex during SSW of 2002 is investigated. An unusual temperature decrease in the lower subtropical stratosphere, which contributed to a decrease in the stratospheric meridional temperature gradient is considered a possible cause of the weakening of the polar vortex, which preceded its splitting under the influence of planetary waves.


sudden stratospheric warming, Antarctic polar vortex, lower subtropical stratosphere


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