{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,19]],"date-time":"2026-10-19T21:59:51Z","timestamp":1792447191040,"version":"4.5.0"},"reference-count":59,"publisher":"American Chemical Society (ACS)","issue":"13","license":[{"start":{"date-parts":[[2021,6,23]],"date-time":"2021-06-23T00:00:00Z","timestamp":1624406400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/100000192","name":"National Oceanic and Atmospheric Administration","doi-asserted-by":"publisher","award":["NA17OAR4320101"],"award-info":[{"award-number":["NA17OAR4320101"]}],"id":[{"id":"10.13039\/100000192","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000104","name":"National Aeronautics and Space Administration","doi-asserted-by":"publisher","award":["80NSSC19K0979"],"award-info":[{"award-number":["80NSSC19K0979"]}],"id":[{"id":"10.13039\/100000104","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,7,6]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>We present an updated fuel-based oil and gas (FOG) inventory with estimates of nitrogen oxide (NOx) emissions from oil and natural gas production in the contiguous US (CONUS). We compare the FOG inventory with aircraft-derived (\u201ctop-down\u201d) emissions for NOx over footprints that account for \u223c25% of US oil and natural gas production. Across CONUS, we find that the bottom-up FOG inventory combined with other anthropogenic emissions is on average within \u223c10% of top-down aircraft-derived NOx emissions. We also find good agreement in the trends of NOx from drilling- and production-phase activities, as inferred by satellites and in the bottom-up inventory. Leveraging tracer\u2013tracer relationships derived from aircraft observations, methane (CH4) and non-methane volatile organic compound (NMVOC) emissions have been added to the inventory. Our total CONUS emission estimates for 2015 of oil and natural gas are 0.45 \u00b1 0.14 Tg NOx\/yr, 15.2 \u00b1 3.0 Tg CH4\/yr, and 5.7 \u00b1 1.7 Tg NMVOC\/yr. Compared to the US National Emissions Inventory and Greenhouse Gas Inventory, FOG NOx emissions are \u223c40% lower, while inferred CH4 and NMVOC emissions are up to a factor of \u223c2 higher. This suggests that NMVOC\/NOx emissions from oil and gas basins are \u223c3 times higher than current estimates and will likely affect how air quality models represent ozone formation downwind of oil and gas fields.<\/jats:p>","DOI":"10.1021\/acs.est.0c07352","type":"journal-article","created":{"date-parts":[[2021,6,23]],"date-time":"2021-06-23T13:42:55Z","timestamp":1624455775000},"page":"9129-9139","source":"Crossref","is-referenced-by-count":62,"title":["Quantifying Methane and Ozone Precursor Emissions\nfrom Oil and Gas Production Regions across the Contiguous US"],"prefix":"10.1021","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4491-7462","authenticated-orcid":true,"given":"Colby\nB.","family":"Francoeur","sequence":"first","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8600-5096","authenticated-orcid":true,"given":"Brian C.","family":"McDonald","sequence":"additional","affiliation":[{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica B.","family":"Gilman","sequence":"additional","affiliation":[{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1581-6419","authenticated-orcid":true,"given":"Kyle J.","family":"Zarzana","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Dix","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7477-9078","authenticated-orcid":true,"given":"Steven S.","family":"Brown","sequence":"additional","affiliation":[{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0385-1826","authenticated-orcid":true,"given":"Joost A.","family":"de Gouw","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gregory J.","family":"Frost","sequence":"additional","affiliation":[{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Meng","family":"Li","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stuart A.","family":"McKeen","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeff","family":"Peischl","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , ,","place":["Boulder, Colorado, United States, 80309"]},{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ilana B.","family":"Pollack","sequence":"additional","affiliation":[{"name":"Colorado State University , , , ,","place":["Fort Collins, Colorado, United States, 80523"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas B.","family":"Ryerson","sequence":"additional","affiliation":[{"name":"NOAA Chemical Sciences Laboratory , , ,","place":["Boulder, Colorado, United States, 80305"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chelsea","family":"Thompson","sequence":"additional","affiliation":[{"name":"University of Colorado Boulder , , , 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Climate Change\n2013: The Physical Science Basis; Intergovernmental\nPanel on Climate Change, 2014; pp 659\u2013740.","DOI":"10.1017\/CBO9781107415324.018"},{"key":"2026081710275050300_cit3","doi-asserted-by":"publisher","first-page":"186","DOI":"10.1126\/science.aar7204","article-title":"Assessment of methane\nemissions from the US oil and gas supply chain","volume":"361","author":"Alvarez","year":"2018","journal-title":"Science"},{"key":"2026081710275050300_cit4","doi-asserted-by":"publisher","first-page":"8500","DOI":"10.1029\/2019gl082635","article-title":"Large Fugitive Methane\nEmissions\nFrom Urban Centers Along the US East Coast","volume":"46","author":"Plant","year":"2019","journal-title":"Geophys. Res. 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