Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 25, issue 24
Articles | Volume 25, issue 24
https://doi.org/10.5194/acp-25-18697-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-25-18697-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 24
Research article
 | 
22 Dec 2025
Research article |  | 22 Dec 2025

Radiative forcing and stratospheric ozone changes due to major forest fires and recent volcanic eruptions including Hunga Tonga

Christoph Brühl, Matthias Kohl, and Jos Lelieveld

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Short summary
Simulations with a comprehensive chemistry-climate model show that organic aerosol from recent major forest fires strongly enhances heterogeneous ozone depletion by chlorine in the middle and high latitude lower stratosphere, supported by satellite observations. This sunlight-absorbing, self-lofting aerosol perturbs the radiation budget and stratospheric dynamics differently from major volcanic eruptions, which are also included in this study.
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