Articles | Volume 22, issue 6
https://doi.org/10.5194/acp-22-3861-2022
https://doi.org/10.5194/acp-22-3861-2022
Research article
 | 
24 Mar 2022
Research article |  | 24 Mar 2022

The impact of peripheral circulation characteristics of typhoon on sustained ozone episodes over the Pearl River Delta region, China

Ying Li, Xiangjun Zhao, Xuejiao Deng, and Jinhui Gao

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Latest update: 01 Mar 2024
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Short summary
This study finds a new phenomenon of weak wind deepening (WWD) associated with the peripheral circulation of typhoon and gives the influence mechanism of WWD on its contribution to daily variation during sustained ozone episodes. The WWD provides the premise for pollution accumulation in the whole PBL and continued enhancement of ground-level ozone via vertical mixing processes. These findings could benefit the daily daytime ozone forecast in the PRD region and other areas.
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