Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 24
Articles | Volume 25, issue 24
https://doi.org/10.5194/acp-25-18431-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-18431-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 24
Research article
 | 
18 Dec 2025
Research article |  | 18 Dec 2025

Influence of sudden stratospheric warming with elevated stratopause on the hydroxyl in the polar middle atmosphere

Jin Hu, Sheng-Yang Gu, Yusong Qin, Yuxuan Liu, and Yafei Wei

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Short summary
This paper focuses on the response of the polar hydroxyl layer in the mesosphere to Arctic sudden stratospheric warming events with an elevated stratopause, revealing significant phase-dependent variations in hydroxyl distribution driven by gravity wave drag changes. These findings enhance our understanding of vertical and dynamical-photochemical coupling in the middle and upper atmosphere, which also offer valuable implications for the upper atmospheric sounding and modeling.
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