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- Title
Satellite quantification of oil and natural gas methane emissions in the US and Canada including contributions from individual basins.
- Authors
Shen, Lu; Gautam, Ritesh; Omara, Mark; Zavala-Araiza, Daniel; Maasakkers, Joannes D.; Scarpelli, Tia R.; Lorente, Alba; Lyon, David; Sheng, Jianxiong; Varon, Daniel J.; Nesser, Hannah; Qu, Zhen; Lu, Xiao; Sulprizio, Melissa P.; Hamburg, Steven P.; Jacob, Daniel J.
- Abstract
We use satellite methane observations from the Tropospheric Monitoring Instrument (TROPOMI), for May 2018 to February 2020, to quantify methane emissions from individual oil and natural gas (O/G) basins in the US and Canada using a high-resolution (∼25 km) atmospheric inverse analysis. Our satellite-derived emission estimates show good consistency with in situ field measurements (R=0.96) in 14 O/G basins distributed across the US and Canada. Aggregating our results to the national scale, we obtain O/G -related methane emission estimates of 12.6±2.1 Tg a -1 for the US and 2.2±0.6 Tg a -1 for Canada, 80 % and 40 %, respectively, higher than the national inventories reported to the United Nations. About 70 % of the discrepancy in the US Environmental Protection Agency (EPA) inventory can be attributed to five O/G basins, the Permian, Haynesville, Anadarko, Eagle Ford, and Barnett basins, which in total account for 40 % of US emissions. We show more generally that our TROPOMI inversion framework can quantify methane emissions exceeding 0.2–0.5 Tg a -1 from individual O/G basins, thus providing an effective tool for monitoring methane emissions from large O/G basins globally.
- Subjects
CANADA; NATURAL gas; METHANE; PETROLEUM industry
- Publication
Atmospheric Chemistry & Physics, 2022, Vol 22, Issue 17, p11203
- ISSN
1680-7316
- Publication type
Article
- DOI
10.5194/acp-22-11203-2022