Articles | Volume 26, issue 4
https://doi.org/10.5194/acp-26-2813-2026
https://doi.org/10.5194/acp-26-2813-2026
Research article
 | 
25 Feb 2026
Research article |  | 25 Feb 2026

Molecular composition and processing of aqueous secondary organic aerosol in clouds at a mountain site in southeastern China

Yali Jin, Hao Luo, Siqi Tang, Shuhui Xue, Chengyu Nie, Xiaocong Peng, Yan Zheng, Weiqi Xu, Guohua Zhang, Xiaole Pan, Yele Sun, Qi Chen, Lanzhong Liu, and Defeng Zhao

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Short summary
Cloud substantially changes the compositions organic aerosol. How cloud processing of organics occur on molecular level remains unclear. We found that compared with cloud free particles, organics in cloud contains more large molecules likely due to accretion reactions and has more nitrogen-containing compounds. We identify some new compounds formed in cloud. Such modifications of the organics in cloud can further change its physicochemical properties, and impact on climate and human health.
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