| Title: | Quantifying Methane and Ozone Precursor Emissions from Oil and Gas Production Regions across the Contiguous US |
| Author(s): | Francoeur CB; McDonald BC; Gilman JB; Zarzana KJ; Dix B; Brown SS; de Gouw JA; Frost GJ; Li M; McKeen SA; Peischl J; Pollack IB; Ryerson TB; Thompson C; Warneke C; Trainer M; |
| Address: | "Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, Colorado 80309, United States. NOAA Chemical Sciences Laboratory, Boulder, Colorado 80305, United States. Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States. Department of Atmospheric Sciences, Colorado State University, Fort Collins, Colorado 80523, United States" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "We present an updated fuel-based oil and gas (FOG) inventory with estimates of nitrogen oxide (NO(x)) emissions from oil and natural gas production in the contiguous US (CONUS). We compare the FOG inventory with aircraft-derived ('top-down') emissions for NO(x) over footprints that account for approximately 25% 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 approximately 10% of top-down aircraft-derived NO(x) emissions. We also find good agreement in the trends of NO(x) from drilling- and production-phase activities, as inferred by satellites and in the bottom-up inventory. Leveraging tracer-tracer relationships derived from aircraft observations, methane (CH(4)) 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 +/- 0.14 Tg NO(x)/yr, 15.2 +/- 3.0 Tg CH(4)/yr, and 5.7 +/- 1.7 Tg NMVOC/yr. Compared to the US National Emissions Inventory and Greenhouse Gas Inventory, FOG NO(x) emissions are approximately 40% lower, while inferred CH(4) and NMVOC emissions are up to a factor of approximately 2 higher. This suggests that NMVOC/NO(x) emissions from oil and gas basins are approximately 3 times higher than current estimates and will likely affect how air quality models represent ozone formation downwind of oil and gas fields" |
| Keywords: | *Air Pollutants/analysis Methane/analysis Natural Gas/analysis Oil and Gas Fields *Ozone/analysis air quality climate emissions energy production methane nitrogen oxides non-methane volatile organic compounds oil and gas; |
| Notes: | "MedlineFrancoeur, Colby B McDonald, Brian C Gilman, Jessica B Zarzana, Kyle J Dix, Barbara Brown, Steven S de Gouw, Joost A Frost, Gregory J Li, Meng McKeen, Stuart A Peischl, Jeff Pollack, Ilana B Ryerson, Thomas B Thompson, Chelsea Warneke, Carsten Trainer, Michael eng Research Support, U.S. Gov't, Non-P.H.S. 2021/06/24 Environ Sci Technol. 2021 Jul 6; 55(13):9129-9139. doi: 10.1021/acs.est.0c07352. Epub 2021 Jun 23" |
