A124-06
Quantifying Methane and Ozone Precursor Emissions from Oil and Gas Production Regions across Contiguous US

Friday, 11 December 2020: 05:50
Virtual
Colby Francoeur1,2, Brian C McDonald3, Jessica Gilman4, Kyle J Zarzana5, Jeff Peischl6, Stuart A McKeen7, Meng Li3, Chelsea R Thompson8, Ilana B Pollack9, Thomas B Ryerson10, Carsten Warneke6, Barbara K Dix11, Joost A de Gouw12, Gregory J Frost13, Steven S Brown4 and Michael Trainer13, (1)University of Colorado Boulder- CIRES, Boulder, CO, United States, (2)NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (3)Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO, United States, (4)NOAA Earth System Research Laboratory, Chemical Sciences Laboratory, Boulder, CO, United States, (5)University of Colorado Boulder, Chemistry & CIRES, Boulder, CO, United States, (6)CIRES and NOAA ESRL, Chemical Sciences Laboratory, Boulder, CO, United States, (7)NOAA ESRL/CSL and CU Boulder/CIRES, Boulder, CO, United States, (8)Institute for Arctic and Alpine Research, Boulder, CO, United States, (9)Colorado State University, Atmospheric Science Department, Ft. Collins, CO, United States, (10)NOAA ESRL Chemical Sciences Division, Boulder, CO, United States, (11)Cooperative Institute for Research in Environmental Sciences (CIRES), Boulder, CO, United States, (12)University of Colorado, CIRES and Department of Chemistry, Boulder, CO, United States, (13)Chemical Sciences Laboratory, NOAA Earth System Research Laboratories, Boulder, CO, United States
Recorded Presentation
Abstract:
We present the bottom-up, updated Fuel-based Oil and Gas Inventory (FOG) with estimates of nitrogen oxides (NOx) emissions from oil and natural gas production covering the entire contiguous U.S. (CONUS). Using empirical relationships, we have also expanded the inventory to methane (CH4), and non-methane volatile organic compound (NMVOC) emissions. The inventory spans the years 2007 through 2019 and will be updated for 2020 to examine the impacts of COVID. We compare the FOG inventory with aircraft-derived (“top-down”) emissions for NOx, and then estimate CH4 and total NMVOC emissions by scaling NOx emissions with aircraft measurements over basins comprising ~25% of US oil and natural gas production. Across CONUS, we find that the bottom-up FOG inventory is within ~10% of top-down aircraft-derived NOx emissions. We also see good agreement with source attributions of NOx from oil and natural gas activities derived from satellite remote sensing measurements. Our total CONUS emission estimates from drilling and production of oil and natural gas are 0.37 ± 0.11 Tg NOx/yr, 13.1 ± 5.0 Tg CH4/yr, and 5.6 ± 2.6 Tg NMVOCs/yr. Compared to the US Environmental Protection Agency (EPA) National Emissions Inventory (NEI 2014) and Greenhouse Gas Inventory (GHGI), FOG NOx emissions are ~30% lower, while CH4 and NMVOC are a factor of ~2 higher.
<< Previous Abstract | Next Abstract >>