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-26-15683-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-15683-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 21
Research article
 | 
09 Nov 2026
Research article |  | 09 Nov 2026

Tropospheric oxidation chemistry and methane growth: a process-based attribution of OH variability (2003–2022)

Benjamin Gaubert, Mohammad Amin Mirrezaei, Rafael P. Fernandez, Ivan Ortega, Louisa Emmons, John Orlando, Youmi Oh, Lori Bruhwiler, Shuo Chen, Gabrielle Pétron, Xin Lan, Claire Granier, Nicolas Zilbermann, Idir Bouarar, Guy P. Brasseur, Chuan Feng, Yangyang Xu, Alfonso Saiz-Lopez, Carlos A. Cuevas, and Avelino F. Arellano Jr.

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Latest update: 09 Nov 2026
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Short summary
Atmospheric methane levels have been rising in ways scientists struggle to explain. Much of the uncertainty lies in a chemical that removes methane from the air. Using a detailed model of the Earth, we found that chemistry plays an important role in the fate of methane in the atmosphere, even small variations need to be included to track methane accurately.
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