Articles | Volume 25, issue 21
https://doi.org/10.5194/acp-25-15437-2025
https://doi.org/10.5194/acp-25-15437-2025
Research article
 | 
12 Nov 2025
Research article |  | 12 Nov 2025

Impact of stratospheric intrusion on near-surface ozone over the Sichuan Basin in China driven by terrain forcing of Tibetan Plateau

Zhuozhi Shu, Fumo Yang, Guangming Shi, Yuqing Zhang, Yongjie Huang, Xinning Yu, Baiwan Pan, and Tianliang Zhao

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Short summary
We targeted four stratospheric intrusion episodes to investigate the impacts of cross-layer transport of stratospheric O3 on the near-surface environmental atmosphere over Sichuan Basin and uncover multi-scale atmospheric circulation coupling mechanisms with the seasonally discrepant terrain effects of Tibetan Plateau. Results provided the critical insights into understanding of regional O3 pollution genesis with the exceptional natural sources contribution derived from the stratosphere.
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