Articles | Volume 14, issue 4
Atmos. Meas. Tech., 14, 3087–3118, 2021
https://doi.org/10.5194/amt-14-3087-2021
Atmos. Meas. Tech., 14, 3087–3118, 2021
https://doi.org/10.5194/amt-14-3087-2021

Research article 28 Apr 2021

Research article | 28 Apr 2021

Retrieval of atmospheric CO2 vertical profiles from ground-based near-infrared spectra

Sébastien Roche et al.

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Sebastien Roche on behalf of the Authors (07 Mar 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (22 Mar 2021) by Frank Hase
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Short summary
We evaluate CO2 profile retrievals from ground-based near-infrared solar absorption spectra after implementing several improvements to the GFIT2 retrieval algorithm. Realistic errors in the a priori temperature profile (~ 2 °C in the lower troposphere) are found to be the leading source of differences between the retrieved and true CO2 profiles, differences that are larger than typical CO2 variability. A temperature retrieval or correction is critical to improve CO2 profile retrieval results.