Articles | Volume 22, issue 6
Research article
31 Mar 2022
Research article |  | 31 Mar 2022

Evolution of the intensity and duration of the Southern Hemisphere stratospheric polar vortex edge for the period 1979–2020

Audrey Lecouffe, Sophie Godin-Beekmann, Andrea Pazmiño, and Alain Hauchecorne

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Subject: Dynamics | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Stratosphere | Science Focus: Physics (physical properties and processes)
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Cited articles

Akiyoshi, H., Zhou, L., Yamashita, Y., Sakamoto, K., Yoshiki, M., Nagashima, T., Takahashi, M., Kurokawa, J., Takigawa, M., and Imamura, T.: A CCM simulation of the breakup of the Antarctic polar vortex in the years 1980–2004 under the CCMVal scenarios, J. Geophys. Res.-Atmos., 114, D03103,, 2009. a, b, c
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Atkinson, R. J., Matthews, W. A., Newman, P. A., and Plumb, R. A.: Evidence of the mid-latitude impact of Antarctic ozone depletion, Nature, 340, 290–294,, 1989. a
Baldwin, M. P. and Dunkerton, T. J.: Quasi-biennial modulation of the southern hemisphere stratospheric polar vortex, Geophys. Res. Lett., 25, 3343–3346,, 1998. a, b
Bodeker, G., Struthers, H., and Connor, B.: Dynamical containment of Antarctic ozone depletion, Geophys. Res. Lett., 29, 1098​​​​​​​,, 2002. a, b
Short summary
This study uses a model developped at LATMOS (France) to analyze the behavior of the Antarctic polar vortex from 1979 to 2020 at 675 K, 550 K, and 475 K isentropic levels. We found that the vortex edge intensity is stronger during the September–October–November period, while its edge position is less extended during this period. The polar vortex is stronger and lasts longer during solar minimum years. Breakup dates of the polar vortex are linked to the ozone hole and maximum wind speed.
Final-revised paper