A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane

Gromov, Sergey; Brenninkmeijer, Carl A. M.; Jöckel, Patrick

doi:https://doi.org/10.5194/acp-18-9831-2018

Articles | Volume 18, issue 13

https://doi.org/10.5194/acp-18-9831-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

The Modular Earth Submodel System (MESSy) (ACP/GMD inter-journal...

https://doi.org/10.5194/acp-18-9831-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 13

Research article

|

12 Jul 2018

Research article |

| 12 Jul 2018

A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane

Sergey Gromov, Carl A. M. Brenninkmeijer, and Patrick Jöckel

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Final revised paper (published on 12 Jul 2018)
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Preprint (discussion started on 21 Feb 2018)
Supplement to the preprint

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of Gromov et al paper "A very limited role of tropospheric chlorine as a sink of the greenhouse gas methane', Martin Manning, 23 Mar 2018
- AC1: 'Reply to Martin Manning', Sergey Gromov, 08 Jun 2018
RC2: 'Review', Anonymous Referee #2, 14 Apr 2018
- AC2: 'Reply to Referee #2', Sergey Gromov, 08 Jun 2018
AC3: 'Revised version with mark-up', Sergey Gromov, 08 Jun 2018

Peer-review completion

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

AR by Sergey Gromov on behalf of the Authors (08 Jun 2018) Author's response Manuscript

ED: Publish as is (23 Jun 2018) by Martin Heimann

AR by Sergey Gromov on behalf of the Authors (23 Jun 2018)

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Short summary

Using the observational data on ¹³C (CO) and ¹³C (CH₄) from the extra-tropical Southern Hemisphere (ETSH) and EMAC model we (1) provide an independent, observation-based evaluation of Cl atom concentration variations in the ETSH throughout 1994–2000, (2) show that the role of tropospheric Cl as a sink of CH₄ is seriously overestimated in the literature, (3) demonstrate that the ¹³C/¹²C ratio of CO is a sensitive indicator for the isotopic composition of reacted CH₄ and therefore for its sources.