Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 21
Articles | Volume 26, issue 21
https://doi.org/10.5194/acp-26-15333-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-15333-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 21
Research article
 | 
30 Oct 2026
Research article |  | 30 Oct 2026

Source-dependent organic aerosol hygroscopicity in eastern China: observational evidence for conditional enhancement under biomass-burning influence

Yunfei Wu, Jiwei Li, Zhisheng Zhang, Jun Tao, Yunjie Xia, Liang Ran, and Zhaoze Deng

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Short summary
Atmospheric particles affect climate by absorbing water and forming clouds, but how organic aerosols uptake water remains unclear. Our field measurements in rural eastern China show their hygroscopicity depends more on emission sources – especially biomass burning – than oxidation. Aging increases water uptake from biomass burning, but not from other sources. These results urge models to include source information for better climate predictions.
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