Articles | Volume 16, issue 6
https://doi.org/10.5194/amt-16-1597-2023
https://doi.org/10.5194/amt-16-1597-2023
Research article
 | 
28 Mar 2023
Research article |  | 28 Mar 2023

Accounting for surface reflectance spectral features in TROPOMI methane retrievals

Alba Lorente, Tobias Borsdorff, Mari C. Martinez-Velarte, and Jochen Landgraf

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Latest update: 28 Mar 2024
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Short summary
In the TROPOMI methane data, there are few false methane anomalies that can be misinterpreted as enhancements caused by strong emission sources. These artefacts are caused by features of the underlying surfaces that are not well characterized in the retrieval algorithm. Here we improve the representation of the surface reflectance dependency with wavelength in the forward model, removing the artificial localized CH4 enhancements found in several locations like Siberia, Australia and Algeria.