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Evaluating Oil and Gas Contributions to Ambient Nonmethane Hydrocarbon Mixing Ratios and Ozone-related Metrics in the Colorado Front Range
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SYSNO ASEP 0537091 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evaluating Oil and Gas Contributions to Ambient Nonmethane Hydrocarbon Mixing Ratios and Ozone-related Metrics in the Colorado Front Range Author(s) Lyu, C. (US)
Capps, S. L. (US)
Kurashima, K. (US)
Henze, D. K. (US)
Pierce, G. (US)
Hakami, A. (CA)
Zhao, S. (CA)
Resler, Jaroslav (UIVT-O) SAI, RID, ORCID
Carmichael, G. R. (US)
Sandu, A. (US)
Russel, A. (US)
Chai, T. (US)
Milford, J. (US)Number of authors 13 Article number 118113 Source Title Atmospheric Environment. - : Elsevier - ISSN 1352-2310
Roč. 246, February 2021 (2021)Number of pages 17 s. Publication form Online - E Language eng - English Country GB - United Kingdom Keywords Oil and natural gas ; Nonmethane hydrocarbon ; Ground-level ozone ; Premature mortality ; Source apportionment ; Adjoint sensitivity analysis Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences Method of publishing Open access Institutional support UIVT-O - RVO:67985807 UT WOS 000613549100004 EID SCOPUS 85098232502 DOI 10.1016/j.atmosenv.2020.118113 Annotation Recently, oil and natural gas (O&NG) production activities in the Denver-Julesburg Basin have expanded rapidly. Associated nonmethane hydrocarbon (NMHC) emissions contribute to photochemical formation of ground-level ozone and include benzene as well as other hazardous air pollutants. Using positive matrix factorization (PMF) and chemical mass balance (CMB) methods, we estimate how much O&NG activities and other sources contribute to morning NMHC mixing ratios measured from 2013 to mid-2016 at a site in Platteville, CO, in the Denver-Julesburg Basin, and at a contrasting site in downtown Denver. A novel adjoint sensitivity analysis method is then used to estimate corresponding contributions to ozone and ozone-linked mortality in the Denver region. Average 6–9 am NMHC mixing ratios in Platteville were seven times higher than those in Denver in 2013 but four times higher in 2016. CMB estimates that O&NG activities contributed to the Platteville (Denver) site an average of 96% (56%) of NMHC on a carbon basis while PMF indicated 92% (33%). Average vehicle-related contributions of NMHC are estimated as 41% by CMB and 53% by PMF in Denver. Estimates of the fractional contribution to potential ozone and ozone-linked mortality from O&NG activities are smaller while those from vehicles are larger than the NMHC contributions. CMB (PMF) indicate that greater than 78% (40%) of annual average benzene in Denver is attributable to vehicle emissions while greater than 75% (67%) of benzene in Platteville is attributable to O&NG activities. Workplace Institute of Computer Science Contact Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0314838
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