Articles | Volume 23, issue 9
https://doi.org/10.5194/acp-23-5355-2023
https://doi.org/10.5194/acp-23-5355-2023
Research article
 | 
12 May 2023
Research article |  | 12 May 2023

Characteristics of interannual variability in space-based XCO2 global observations

Yifan Guan, Gretchen Keppel-Aleks, Scott C. Doney, Christof Petri, Dave Pollard, Debra Wunch, Frank Hase, Hirofumi Ohyama, Isamu Morino, Justus Notholt, Kei Shiomi, Kim Strong, Rigel Kivi, Matthias Buschmann, Nicholas Deutscher, Paul Wennberg, Ralf Sussmann, Voltaire A. Velazco, and Yao Té

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Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-1022', Christopher O'Dell, 04 Jan 2023
    • AC1: 'Reply on RC1', Yifan Guan, 10 Mar 2023
  • RC2: 'Comment on egusphere-2022-1022', Anonymous Referee #1, 05 Jan 2023
    • AC2: 'Reply on RC2', Yifan Guan, 10 Mar 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Yifan Guan on behalf of the Authors (10 Mar 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (10 Mar 2023) by Ronald Cohen
RR by Anonymous Referee #1 (27 Mar 2023)
RR by Anonymous Referee #3 (27 Mar 2023)
ED: Publish subject to technical corrections (27 Mar 2023) by Ronald Cohen
AR by Yifan Guan on behalf of the Authors (04 Apr 2023)  Author's response   Manuscript 
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Short summary
We characterize spatial–temporal patterns of interannual variability (IAV) in atmospheric CO2 based on NASA’s Orbiting Carbon Observatory-2 (OCO-2). CO2 variation is strongly impacted by climate events, with higher anomalies during El Nino years. We show high correlation in IAV between space-based and ground-based CO2 from long-term sites. Because OCO-2 has near-global coverage, our paper provides a roadmap to study IAV where in situ observation is sparse, such as open oceans and remote lands.
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