Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 22
Articles | Volume 25, issue 22
https://doi.org/10.5194/acp-25-15765-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-15765-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 22
Research article
 | 
18 Nov 2025
Research article |  | 18 Nov 2025

Role of aerosol–cloud–radiation interactions in modulating summertime quasi-biweekly rainfall intensity over South China

Hongli Chen, Pang-Chi Hsu, Anbao Zhu, and Xiaoyan Ma

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Latest update: 13 Jun 2026
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Short summary
Previous studies mainly examined aerosol effects on short-term rainfall variations. Here we show, using observations and model experiments, that aerosols also intensify rainfall variability on two- to four-week timescales over South China primarily through cloud-microphysical processes, while radiative effects play a secondary role, thereby amplifying prolonged heavy rainfall events.
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