Articles | Volume 15, issue 23
https://doi.org/10.5194/acp-15-13331-2015
https://doi.org/10.5194/acp-15-13331-2015
Research article
 | 
02 Dec 2015
Research article |  | 02 Dec 2015

Why does surface ozone peak before a typhoon landing in southeast China?

Y. C. Jiang, T. L. Zhao, J. Liu, X. D. Xu, C. H. Tan, X. H. Cheng, X. Y. Bi, J. B. Gan, J. F. You, and S. Z. Zhao

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Short summary
An O3 episode with high night-time O3 was observed before typhoon landing over southeastern China. Variations in the observed O3, NO2, CO and meteorology during Typhoon Hagibis event clearly suggest a substantial impact of the peripheral downdrafts in the tropical cyclone on the high O3 episode. This study provides observational evidence of typhoon-driven intrusion of O3 from the upper troposphere and lower stratosphere to surface air threatening to ambient air quality.
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