2010–2015 North American methane emissions, sectoral contributions, and trends: a high-resolution inversion of GOSAT observations of atmospheric methane

Maasakkers, Joannes D.; Jacob, Daniel J.; Sulprizio, Melissa P.; Scarpelli, Tia R.; Nesser, Hannah; Sheng, Jianxiong; Zhang, Yuzhong; Lu, Xiao; Bloom, A. Anthony; Bowman, Kevin W.; Worden, John R.; Parker, Robert J.

doi:https://doi.org/10.5194/acp-21-4339-2021

Articles | Volume 21, issue 6

https://doi.org/10.5194/acp-21-4339-2021

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

https://doi.org/10.5194/acp-21-4339-2021

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

Articles | Volume 21, issue 6

Research article

|

22 Mar 2021

Research article |

| 22 Mar 2021

2010–2015 North American methane emissions, sectoral contributions, and trends: a high-resolution inversion of GOSAT observations of atmospheric methane

Joannes D. Maasakkers, Daniel J. Jacob, Melissa P. Sulprizio, Tia R. Scarpelli, Hannah Nesser, Jianxiong Sheng, Yuzhong Zhang, Xiao Lu, A. Anthony Bloom, Kevin W. Bowman, John R. Worden, and Robert J. Parker

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Final revised paper (published on 22 Mar 2021)
Preprint (discussion started on 18 Sep 2020)

Interactive discussion

Status: closed

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

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RC1: 'Review of Maasakkers et al. 2010-2015 N. American Methane emissions', Anonymous Referee #1, 11 Oct 2020
RC2: 'Interesting paper, but not all information is presented', Anonymous Referee #2, 28 Oct 2020
AC1: 'Comment on acp-2020-915', Joannes Maasakkers, 26 Dec 2020

Peer-review completion

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

AR by Joannes Maasakkers on behalf of the Authors (26 Dec 2020) Author's response Manuscript

ED: Publish as is (07 Jan 2021) by Andreas Hofzumahaus

AR by Joannes Maasakkers on behalf of the Authors (07 Jan 2021)

Short summary

We use 2010–2015 GOSAT satellite observations of atmospheric methane over North America in a high-resolution inversion to estimate methane emissions. We find general consistency with the gridded EPA inventory but higher oil and gas production emissions, with oil production emissions twice as large as in the latest EPA Greenhouse Gas Inventory. We find lower wetland emissions than predicted by WetCHARTs and a small increasing trend in the eastern US, apparently related to unconventional oil/gas.