Influence of oil and gas emissions on summertime ozone in the Colorado Northern Front Range

Details

• Journal Title:
  Journal of Geophysical Research: Atmospheres
• Personal Author:
  McDuffie, Erin E. ; Edwards, Peter M. ; Gilman, Jessica B. ; Lerner, Brian M. ; Dubé, William P. ; Trainer, Michael ; Wolfe, Daniel E. ; Angevine, Wayne M. ; deGouw, Joost ; Williams, Eric J. ; Tevlin, Alex G. ; Murphy, Jennifer G. ; Fischer, Emily V. ; McKeen, Stuart ; Ryerson, Thomas B. ; Peischl, Jeff ; Holloway, John S. ; Aikin, Kenneth ; Langford, Andrew O. ; Senff, Christoph J. ; Alvarez, Raul J. ; Hall, Samuel R. ; Ullmann, Kirk ; Lantz, Kathy O. ; Brown, Steven S.
• NOAA Program & Office:
  NESDIS (National Environmental Satellite, Data, and Information Service) ; NCEI (National Centers for Environmental Information) ; OAR (Oceanic and Atmospheric Research) ; GML (Global Monitoring Laboratory) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)
• Description:
  Tropospheric O-3 has been decreasing across much of the eastern U.S. but has remained steady or even increased in some western regions. Recent increases in VOC and NOx emissions associated with the production of oil and natural gas (O&NG) may contribute to this trend in some areas. The Northern Front Range of Colorado has regularly exceeded O-3 air quality standards during summertime in recent years. This region has VOC emissions from a rapidly developing O&NG basin and low concentrations of biogenic VOC in close proximity to urban-Denver NOx emissions. Here VOC OH reactivity (OHR), O-3 production efficiency (OPE), and an observationally constrained box model are used to quantify the influence of O&NG emissions on regional summertime O-3 production. Analyses are based on measurements acquired over two summers at a central location within the Northern Front Range that lies between major regional O&NG and urban emission sectors. Observational analyses suggest that mixing obscures any OPE differences in air primarily influenced by O&NG or urban emission sector. The box model confirms relatively modest OPE differences that are within the uncertainties of the field observations. Box model results also indicate that maximum O-3 at the measurement location is sensitive to changes in NOx mixing ratio but also responsive to O&NG VOC reductions. Combined, these analyses show that O&NG alkanes contribute over 80% to the observed carbon mixing ratio, roughly 50% to the regional VOC OHR, and approximately 20% to regional photochemical O-3 production.
• Source:
  Journal of Geophysical Research-Atmospheres, 121(14), 8712-8729.
• DOI:
  https://doi.org/10.1002/2016jd025265
• Document Type:
  Journal Article
• Rights Information:
  Other
• Compliance:
  Submitted
• Download URL:
  https://repository.library.noaa.gov/view/noaa/18310/noaa_18310_DS1.pdf
• File Type:
  [PDF - 1.41 MB]
• Collection(s):
  Office of Oceanic and Atmospheric Research (OAR) ; NOAA Cooperative Institutes ; National Environmental Satellite and Data Information Service (NESDIS)
• Main Document Checksum:
  urn:sha256:dd707d8978af4070fd2c294b0b8ffa275e41739e141733fc7c49e8ee0f2395a7