Articles | Volume 26, issue 19
https://doi.org/10.5194/acp-26-14439-2026
https://doi.org/10.5194/acp-26-14439-2026
Research article
 | 
13 Oct 2026
Research article |  | 13 Oct 2026

Summertime ozone sensitivity to temperature in China: observational evidence and mechanistic attribution in urban and rural areas in the Yangtze River Delta region

Chang Su, Massimo Bollasina, James Weber, and David Stevenson

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Short summary
Hot weather can strongly increase surface ozone, a harmful air pollutant, but the reasons differ between urban and rural areas. We studied a large city and a nearby rural region in eastern China using air quality observations and simplified chemistry modelling. We found that heat-driven plant emissions dominate ozone increases in the city, while chemical nitrogen cycling is key in the rural area. Our results help identify heat-resilient air pollution control strategies under climate change.
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