The Adaptable 4A Inversion (5AI): description and first XCO2 retrievals from Orbiting Carbon Observatory-2 (OCO-2) observations

Dogniaux, Matthieu; Crevoisier, Cyril; Armante, Raymond; Capelle, Virginie; Delahaye, Thibault; Cassé, Vincent; De Mazière, Martine; Deutscher, Nicholas M.; Feist, Dietrich G.; Garcia, Omaira E.; Griffith, David W. T.; Hase, Frank; Iraci, Laura T.; Kivi, Rigel; Morino, Isamu; Notholt, Justus; Pollard, David F.; Roehl, Coleen M.; Shiomi, Kei; Strong, Kimberly; Té, Yao; Velazco, Voltaire A.; Warneke, Thorsten

doi:https://doi.org/10.5194/amt-14-4689-2021

Articles | Volume 14, issue 6

https://doi.org/10.5194/amt-14-4689-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-4689-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 6

Research article

|

24 Jun 2021

Research article |

| 24 Jun 2021

The Adaptable 4A Inversion (5AI): description and first X_CO₂ retrievals from Orbiting Carbon Observatory-2 (OCO-2) observations

Matthieu Dogniaux, Cyril Crevoisier, Raymond Armante, Virginie Capelle, Thibault Delahaye, Vincent Cassé, Martine De Mazière, Nicholas M. Deutscher, Dietrich G. Feist, Omaira E. Garcia, David W. T. Griffith, Frank Hase, Laura T. Iraci, Rigel Kivi, Isamu Morino, Justus Notholt, David F. Pollard, Coleen M. Roehl, Kei Shiomi, Kimberly Strong, Yao Té, Voltaire A. Velazco, and Thorsten Warneke

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Final revised paper (published on 24 Jun 2021)
Preprint (discussion started on 10 Nov 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review', Anonymous Referee #1, 10 Dec 2020
- AC1: 'Reply on RC1', Dogniaux Matthieu, 22 Mar 2021
RC2: 'Review', Anonymous Referee #2, 29 Dec 2020
- AC2: 'Reply on RC2', Dogniaux Matthieu, 22 Mar 2021

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Dogniaux Matthieu on behalf of the Authors (22 Mar 2021) Author's response Manuscript

ED: Publish as is (18 Apr 2021) by Abhishek Chatterjee

AR by Dogniaux Matthieu on behalf of the Authors (22 Apr 2021) Manuscript

Short summary

We present the Adaptable 4A Inversion (5AI), an implementation of the optimal estimation (OE) algorithm, relying on the Automatized Atmospheric Absorption Atlas (4A/OP) radiative transfer model, that enables the retrieval of greenhouse gas atmospheric weighted columns from infrared measurements. It is tested on a sample of Orbiting Carbon Observatory-2 observations, and its results satisfactorily compare to several reference products, thus showing the reliability of 5AI OE implementation.