Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 6
Articles | Volume 25, issue 6
https://doi.org/10.5194/acp-25-3465-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-3465-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 6
Research article
 | 
25 Mar 2025
Research article |  | 25 Mar 2025

The joint effect of mid-latitude winds and the westerly quasi-biennial oscillation phase on the Antarctic stratospheric polar vortex and ozone

Zhe Wang, Jiankai Zhang, Siyi Zhao, and Douwang Li

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Latest update: 29 Oct 2025
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Short summary
Mid-latitude wind in the upper stratosphere is indispensable in establishing quasi-biennial oscillation (QBO)–vortex coupling in the Southern Hemisphere. During the westerly QBO, positive zonal wind anomalies at 20−40° S in the upper stratosphere in July, named the positive extratropical mode, lead to a stronger polar vortex in November, with a correlation of 0.75, suggesting that the Antarctic stratospheric polar vortex and ozone concentration in spring can be predicted up to 5 months in advance.
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