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.
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.
the Creative Commons Attribution 4.0 License.
Research article
| 
25 Mar 2025
Research article |
| 25 Mar 2025
| 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
College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
Jiankai Zhang
CORRESPONDING AUTHOR
College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
Siyi Zhao
College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
Douwang Li
College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
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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.
Mid-latitude wind in the upper stratosphere is indispensable in establishing quasi-biennial...
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