Articles | Volume 23, issue 1
Research article
17 Jan 2023
Research article |  | 17 Jan 2023

Reconciling the bottom-up and top-down estimates of the methane chemical sink using multiple observations

Yuanhong Zhao, Marielle Saunois, Philippe Bousquet, Xin Lin, Michaela I. Hegglin, Josep G. Canadell, Robert B. Jackson, and Bo Zheng


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on acp-2022-556', Anonymous Referee #1, 05 Oct 2022
  • RC2: 'Comment on acp-2022-556', Anonymous Referee #2, 26 Oct 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Y. H. Zhao on behalf of the Authors (13 Dec 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (16 Dec 2022) by Patrick Jöckel
Short summary
The large uncertainties in OH simulated by atmospheric chemistry models hinder accurate estimates of CH4 chemical loss through the bottom-up method. This study presents a new approach based on OH precursor observations and a chemical box model to improve the tropospheric OH distributions simulated by atmospheric chemistry models. Through this approach, both the global OH burden and the corresponding methane chemical loss reach consistency with the top-down method based on MCF inversions.
Final-revised paper