Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 20
Articles | Volume 26, issue 20
https://doi.org/10.5194/acp-26-14699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-14699-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 20
Research article
 | 
20 Oct 2026
Research article |  | 20 Oct 2026

Can radon help to improve methane emission estimates? Results from a dual-tracer inversion

Fabian Maier, Christian Rödenbeck, Ute Karstens, Frank-Thomas Koch, Maksym Gachkivskyi, Andrew Smerald, and Christoph Gerbig

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Short summary
Transport model errors represent a major source of uncertainty in greenhouse gas flux estimates derived from inverse modelling, yet they remain challenging to quantify. In our study, we leverage the similarities in the atmospheric transport of methane (CH4) and radon (222Rn) by performing a dual-tracer CH4-222Rn inversion over Europe, with the goal of enhancing the reliability of CH4 flux estimates. We discuss the benefits and limitations of this dual-tracer approach.
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