Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 17
Articles | Volume 25, issue 17
https://doi.org/10.5194/acp-25-10293-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-25-10293-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 17
Research article
 | 
10 Sep 2025
Research article |  | 10 Sep 2025

Incorporation of multi-phase halogen chemistry into the Community Multiscale Air Quality (CMAQ) model

Kiyeon Kim, Chul Han Song, Kyung Man Han, Greg Yarwood, Ross Beardsley, and Saewung Kim

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Short summary
Despite the crucial role of halogen radicals in the atmosphere, current chemical transport models (CTMs) do not account for multi-phase halogen processes. To address this issue, we incorporated 177 halogen reactions, together with anthropogenic and natural halogen emissions into the CTMs. Our findings reveal that incorporation of these halogen processes significantly improves model performances compared to observations. In addition, we emphasize the influence of halogen radicals on air quality.
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