Mapping spectroscopic uncertainties into prospective methane retrieval errors from Sentinel-5 and its precursor

Checa-Garcia, R.; Landgraf, J.; Galli, A.; Hase, F.; Velazco, V. A.; Tran, H.; Boudon, V.; Alkemade, F.; Butz, A.

doi:10.5194/amt-8-3617-2015

Articles | Volume 8, issue 9

https://doi.org/10.5194/amt-8-3617-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-8-3617-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 9

Research article

|

08 Sep 2015

Research article |

| 08 Sep 2015

Mapping spectroscopic uncertainties into prospective methane retrieval errors from Sentinel-5 and its precursor

R. Checa-Garcia, J. Landgraf, A. Galli, F. Hase, V. A. Velazco, H. Tran, V. Boudon, F. Alkemade, and A. Butz

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Latest update: 22 Nov 2025

Short summary

The future satellite missions Sentinel-5 and its precursor will monitor methane column average dry air mole fractions. The ambitious accuracy required on regional scales demands a characterization of the systematic error sources in which spectroscopic uncertainties are crucial. This study investigates how methane and water vapour spectroscopic errors propagate into retrieval errors, showing that spectroscopy-induced errors exceed 0.6% in large parts of the world and are regionally correlated.