Articles | Volume 25, issue 23
https://doi.org/10.5194/acp-25-18187-2025
https://doi.org/10.5194/acp-25-18187-2025
Research article
 | 
11 Dec 2025
Research article |  | 11 Dec 2025

Sea breeze-driven daytime vertical distributions of air pollutants and photochemical implications in an island environment

Bohai Li, Shanshan Wang, Zhiwen Jiang, Yuhao Yan, Sanbao Zhang, Ruibin Xue, Yuhan Shi, Chuanqi Gu, Jian Xu, and Bin Zhou

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Short summary
Based on ground-based remote sensing and sea-land breeze identification algorithms, it is found that sea breezes and typhoons along Hainan Island's coast suppress photochemical reactions but transport ozone precursors to the area. Sea breezes largely confine pollutants below 300 m, while typhoons elevate pollution levels at mid-upper altitudes. These findings highlight that tropical coastal sea breezes and typhoons threaten air quality, necessitating targeted pollution mitigation policies.
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