Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period

Zhao, Yuanhong; Saunois, Marielle; Bousquet, Philippe; Lin, Xin; Berchet, Antoine; Hegglin, Michaela I.; Canadell, Josep G.; Jackson, Robert B.; Hauglustaine, Didier A.; Szopa, Sophie; Stavert, Ann R.; Abraham, Nathan Luke; Archibald, Alex T.; Bekki, Slimane; Deushi, Makoto; Jöckel, Patrick; Josse, Béatrice; Kinnison, Douglas; Kirner, Ole; Marécal, Virginie; O'Connor, Fiona M.; Plummer, David A.; Revell, Laura E.; Rozanov, Eugene; Stenke, Andrea; Strode, Sarah; Tilmes, Simone; Dlugokencky, Edward J.; Zheng, Bo

doi:https://doi.org/10.5194/acp-19-13701-2019

Articles | Volume 19, issue 21

https://doi.org/10.5194/acp-19-13701-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-13701-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 21

Research article

|

13 Nov 2019

Research article |

| 13 Nov 2019

Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period

Yuanhong Zhao, Marielle Saunois, Philippe Bousquet, Xin Lin, Antoine Berchet, Michaela I. Hegglin, Josep G. Canadell, Robert B. Jackson, Didier A. Hauglustaine, Sophie Szopa, Ann R. Stavert, Nathan Luke Abraham, Alex T. Archibald, Slimane Bekki, Makoto Deushi, Patrick Jöckel, Béatrice Josse, Douglas Kinnison, Ole Kirner, Virginie Marécal, Fiona M. O'Connor, David A. Plummer, Laura E. Revell, Eugene Rozanov, Andrea Stenke, Sarah Strode, Simone Tilmes, Edward J. Dlugokencky, and Bo Zheng

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Final revised paper (published on 13 Nov 2019)
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Preprint (discussion started on 01 Apr 2019)
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Interactive discussion

Status: closed

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

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SC1: 'Short comment on Zhao et al. (2019)', Hinrich Schaefer, 10 Apr 2019
- AC1: ''Reply to SC1: 'Short comment on Zhao et al. (2019)'', Y. H. Zhao, 03 Aug 2019
RC1: 'Review of Zhao et al. (2019)', Vaishali Naik, 02 May 2019
- AC2: 'Reply to RC1: 'Review of Zhao et al. (2019)'', Y. H. Zhao, 03 Aug 2019
RC2: 'Review comments on acp-2019-281', Anonymous Referee #2, 24 Jun 2019
- AC3: 'Reply to 'Review comments on acp-2019-281'', Y. H. Zhao, 03 Aug 2019

Peer-review completion

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

AR by Anna Wenzel on behalf of the Authors (06 Aug 2019) Author's response

ED: Publish as is (13 Sep 2019) by Astrid Kiendler-Scharr (deceased)

Short summary

The role of hydroxyl radical changes in methane trends is debated, hindering our understanding of the methane cycle. This study quantifies how uncertainties in the hydroxyl radical may influence methane abundance in the atmosphere based on the inter-model comparison of hydroxyl radical fields and model simulations of CH₄ abundance with different hydroxyl radical scenarios during 2000–2016. We show that hydroxyl radical changes could contribute up to 54 % of model-simulated methane biases.