Antarctic polar vortex weakening due to a temperature decrease in the lower subtropical stratosphere

Vladimir V. Zuev, Ekaterina Savelieva, Irina V. Borovko, Vladimir N. Krupchatnikov

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

The stratospheric polar vortex strength in spring determines to a great extent the duration and intensity of ozone depletion in the polar regions. The size of the Antarctic ozone hole usually reaches its maximum in September and then drops off during October and November. However, in 2015, a significant increase in the ozone hole area relative to climatological mean values was observed in October under the strong polar vortex conditions, and in 2002 its abnormal decrease was recorded as a result of the splitting of the polar vortex in September. A significant increase and decrease in temperature of the lower subtropical stratosphere in the spring of 2015 and 2002, which contributed to a corresponding increase and decrease in the stratospheric meridional temperature gradient during these years, was considered as a possible cause for the polar vortex strengthening in 2015 and its weakening in 2002.

Original languageEnglish
Title of host publication26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics
EditorsGennadii G. Matvienko, Oleg A. Romanovskii
PublisherSPIE
ISBN (Electronic)9781510639416
DOIs
Publication statusPublished - 2020
Event26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics 2020 - Moscow, Russian Federation
Duration: 6 Jul 202010 Jul 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11560
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics 2020
CountryRussian Federation
CityMoscow
Period06.07.202010.07.2020

Keywords

  • Antarctic polar vortex
  • Polar ozone depletion
  • Subtropical stratospheric temperature

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