@article{bibcite_36831,
  keywords = {Permian, Methane, Seasonality, TROPOMI},
  author = {Daniel J Varon and Daniel J Jacob and Lucas A Estrada and Nicholas Balasus and James D East and Drew C Pendergrass and Zichong Chen and Melissa P Sulprizio and Mark Omara and Ritesh Gautam and Zachary R Barkley and Felipe J. Cardoso Salda{\~n}a and Emily K Reidy and Harshil Kamdar and Evan D Sherwin and Sebastien C Biraud and Dylan Jervis and Sudhanshu Pandey and John R Worden and Kevin W Bowman and Joannes D Maasakkers and Robert L Kleinberg},
  title = {Seasonality and Declining Intensity of Methane Emissions from the Permian and Nearby US Oil and Gas Basins},
  abstract = {<p>We quantify weekly methane emissions and trends from oil and gas production in the US Permian Basin for 2019{\textendash}2023, and in nearby basins for 2022{\textendash}2023, by analytical inversion of Tropospheric Monitoring Instrument (TROPOMI) satellite observations with the Integrated Methane Inversion (IMI) at 25 km resolution. Permian oil and gas emissions averaged 4.0 {\textpm} 1.1 Tg a<sup>{\textendash}1</sup> over 2019{\textendash}2023, with large seasonal variation but little interannual variability. Methane intensity fell from 5.2 to 3.2\% as production surged. Intensity in the New Mexico Permian fell from 4.5 to 2.1\%, approaching the state{\textquoteright}s 2026 target of \&lt;2\%. Emissions were on average 50 {\textpm} 10\% higher in winter than summer, which we corroborate with Permian Basin Tower Network measurements, Insight M aircraft data, and GHGSat satellite observations. This seasonality may be driven in part by higher winter emissions from liquid storage tanks due to decreased separator efficiency in cold conditions. Similar but weaker seasonality along with decreasing emissions and intensities is found in weekly inversions for the Anadarko, Barnett, Eagle Ford, and Haynesville basins in 2022{\textendash}2023. Our work suggests that better weatherization of oil and gas facilities could significantly reduce methane emissions.</p>},
  year = {2025},
  booktitle = {Environmental Science \&amp; Technology},
  journal = {Environmental Science \&amp; Technology},
  series = {Environmental Science \&amp; Technology},
  month = {22/12/2025},
  institution = {American Chemical Society (ACS)},
  publisher = {American Chemical Society (ACS)},
  issn = {0013-936X, 1520-5851},
  url = {https://doi.org/10.1021/acs.est.5c08745},
  doi = {10.1021/acs.est.5c08745},
}