Influences of hydroxyl radicals (OH) on top-down estimates of the global and regional methane budgets

Zhao, Yuanhong; Saunois, Marielle; Bousquet, Philippe; Lin, Xin; Berchet, Antoine; Hegglin, Michaela I.; Canadell, Josep G.; Jackson, Robert B.; Dlugokencky, Edward J.; Langenfelds, Ray L.; Ramonet, Michel; Worthy, Doug; Zheng, Bo

doi:https://doi.org/10.5194/acp-20-9525-2020

Articles | Volume 20, issue 15

https://doi.org/10.5194/acp-20-9525-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-9525-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 15

Research article

|

13 Aug 2020

Research article |

| 13 Aug 2020

Influences of hydroxyl radicals (OH) on top-down estimates of the global and regional methane budgets

Yuanhong Zhao, Marielle Saunois, Philippe Bousquet, Xin Lin, Antoine Berchet, Michaela I. Hegglin, Josep G. Canadell, Robert B. Jackson, Edward J. Dlugokencky, Ray L. Langenfelds, Michel Ramonet, Doug Worthy, and Bo Zheng

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Final revised paper (published on 13 Aug 2020)
Supplement to the final revised paper
Preprint (discussion started on 12 Feb 2020)
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

SC1: 'Important evidence to importance of OH but it can have more impact', Tonatiuh Guillermo Nuñez Ramirez, 10 Mar 2020
- AC1: 'Reply to SC1: ''Important evidence to importance of OH but it can have more impact''', Y. H. Zhao, 12 May 2020
RC1: 'Review of "Influences of hydroxyl radicals (OH) on top-down estimates of the global and regional methane budgets"', Anonymous Referee #1, 16 Mar 2020
- AC2: 'Reply to RC1:'Review of "Influences of hydroxyl radicals (OH) on top-down estimates of the global and regional methane budgets"'', Y. H. Zhao, 12 May 2020
RC2: 'Review', Anonymous Referee #2, 08 Apr 2020
- AC3: 'Reply to RC2: ' Review'', Y. H. Zhao, 12 May 2020

Peer-review completion

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

AR by Y. H. Zhao on behalf of the Authors (12 May 2020) Author's response Manuscript

ED: Referee Nomination & Report Request started (24 May 2020) by Janne Rinne

RR by Anonymous Referee #2 (30 May 2020)

RR by Anonymous Referee #1 (16 Jun 2020)

ED: Publish subject to technical corrections (29 Jun 2020) by Janne Rinne

AR by Y. H. Zhao on behalf of the Authors (09 Jul 2020) Author's response Manuscript

Short summary

The hydroxyl radical (OH), which is the dominant sink of methane (CH₄), plays a key role in closing the global methane budget. This study quantifies how uncertainties in the hydroxyl radical can influence top-down estimates of CH₄ emissions based on 4D Bayesian inversions with different OH fields and the same surface observations. We show that uncertainties in CH₄ emissions driven by different OH fields are comparable to the uncertainties given by current bottom-up and top-down estimations.