Impacts of tropical cyclone–heat wave compound events on surface ozone in eastern China: comparison between the Yangtze River and Pearl River deltas

Qi, Cuini; Wang, Pinya; Yang, Yang; Li, Huimin; Zhang, Hui; Ren, Lili; Jin, Xipeng; Zhan, Chenchao; Tang, Jianping; Liao, Hong

doi:https://doi.org/10.5194/acp-24-11775-2024

Articles | Volume 24, issue 20

https://doi.org/10.5194/acp-24-11775-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-24-11775-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 24, issue 20

Research article

|

23 Oct 2024

Research article |

| 23 Oct 2024

Impacts of tropical cyclone–heat wave compound events on surface ozone in eastern China: comparison between the Yangtze River and Pearl River deltas

Cuini Qi, Pinya Wang, Yang Yang, Huimin Li, Hui Zhang, Lili Ren, Xipeng Jin, Chenchao Zhan, Jianping Tang, and Hong Liao

Supplement

https://doi.org/10.5194/acp-24-11775-2024-supplement

Data sets

ChinaHighO3: Big Data Seamless 1\,km Ground-level MDA8 O3 Dataset for China (2000-Present) (2 (2000-2023)) J. Wei and Z. Li https://doi.org/10.5281/zenodo.13342827

Daily Timed Data from automated weather stations in China China Meteorological Administration https://data.cma.cn/en/?r=data/detail&dataCode=A.0012.0001

ERA5 hourly data on pressure levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.bd0915c6

geoschem/GCClassic: GEOS-Chem 13.4.1 (13.4.1) The International GEOS-Chem User Community https://doi.org/10.5281/zenodo.6564702

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Short summary

We investigate extremely hot weather impacts on surface ozone over the southeastern coast of China with and without tropical cyclones. Compared to hot days alone, ozone concentration decreased notably in the Yangtze River Delta (YRD) but increased in the Pearl River Delta (PRD) during tropical cyclones and hot days. The YRD benefited from strong and clean sea winds aiding ozone elimination. In contrast, the PRD experienced strong northeasterly winds that potentially transport ozone pollution.