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-25-16817-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-16817-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 22
Research article
 | 
26 Nov 2025
Research article |  | 26 Nov 2025

Photochemical processing of dissolved organic matter in fog water: oxidation and functionalization pathways driving organic aerosol evolution

Wenqing Jiang, Lijuan Li, Lu Yu, Hwajin Kim, Yele Sun, and Qi Zhang

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Short summary
We studied how sunlight changes natural organic matter in fog droplets and the tiny airborne particles formed after the water evaporation. Advanced analyses showed that sunlight makes this material more oxidized, nitrogen-enriched, chemically transformed, and different in light absorption and volatility. These sunlight-driven changes influence the particles’ behavior in the air, affecting air quality, climate, and how long they remain suspended in the atmosphere.
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