Articles | Volume 14, issue 3
Atmos. Meas. Tech., 14, 2141–2166, 2021
https://doi.org/10.5194/amt-14-2141-2021
Atmos. Meas. Tech., 14, 2141–2166, 2021
https://doi.org/10.5194/amt-14-2141-2021

Research article 18 Mar 2021

Research article | 18 Mar 2021

Can a regional-scale reduction of atmospheric CO2 during the COVID-19 pandemic be detected from space? A case study for East China using satellite XCO2 retrievals

Michael Buchwitz et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Michael Buchwitz on behalf of the Authors (10 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish subject to minor revisions (review by editor) (10 Feb 2021) by Ralf Sussmann
AR by Michael Buchwitz on behalf of the Authors (10 Feb 2021)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (11 Feb 2021) by Ralf Sussmann
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Short summary
The COVID-19 pandemic resulted in reduced anthropogenic carbon dioxide (CO2) emissions during 2020 in large parts of the world. We have used a small ensemble of satellite retrievals of column-averaged CO2 (XCO2) to find out if a regional-scale reduction of atmospheric CO2 can be detected from space. We focus on East China and show that it is challenging to reliably detect and to accurately quantify the emission reduction, which only results in regional XCO2 reductions of about 0.1–0.2 ppm.