Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 17
Articles | Volume 26, issue 17
https://doi.org/10.5194/acp-26-12479-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-12479-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 17
Research article
 | 
02 Sep 2026
Research article |  | 02 Sep 2026

Revisiting the critical role of stabilized Criegee intermediates (sCIs) in sulfuric acid formation: coupling mechanistic updates with interpretable machine learning

Yuhuan Zhu, Qiang Chen, Luyan He, Chunlin Shang, Li Jiang, Donghong Guan, Guirong Yao, and Wenkai Guo

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Short summary
We studied how sulfur dioxide in air becomes sulfuric acid through a chemical route that has often been underestimated. By updating reaction data, running chemistry simulations, and using an explainable machine-learning framework, we found that this pathway makes a meaningful contribution and changes how sulfuric acid responds to changes in air pollutants. These findings suggest that reducing emissions of alkene-related organic gases may help limit sulfuric acid formation and particle pollution.
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