气候变化领域集成服务门户(CCPortal): Seasonality and Source Apportionment of Nonmethane Volatile Organic Compounds at Boulder Reservoir, Colorado, Between 2017 and 2019

CCPortal

DOI	10.1029/2020JD034234
	Seasonality and Source Apportionment of Nonmethane Volatile Organic Compounds at Boulder Reservoir, Colorado, Between 2017 and 2019
	Pollack I.B.; Helmig D.; O'Dell K.; Fischer E.V.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	Multiyear observations of 13 nonmethane volatile organic compounds (NMVOCs) were collected at the Boulder Reservoir in the Colorado Northern Front Range Metropolitan Area (NFRMA). We separate abundances of NMVOCs in the 2017–2019 data into source contributions using two approaches that have been applied to prior NFRMA datasets. Positive matrix factorization analysis identifies five NMVOC factors in winter, spring, and fall that correspond to long-lived and short-lived NMVOCs from regional oil and natural gas (O&NG) production, traffic, local shorter-lived alkenes, and regional anthropogenic background. In summer, there is an additional biogenic NMVOC factor dominated by isoprene. The PMF model indicates that 79 ± 1% of C2-C5 alkanes in winter and 84 ± 20% in summer are attributed to O&NG activities. Ethyne is largely from traffic with contributions ranging from 45 ± 6% in winter to 87 ± 32% in summer. Ethene and propene are associated with a potentially separate source of shorter-lived alkenes that we cannot identify. The largest contributing sectors to the observed hazardous air pollutants (HAPs) differ substantially by species and season. Benzene is attributed to O&NG production, traffic and other industrial activities. Toluene is predominantly attributed to regional anthropogenic activities in all seasons. Of the HAPs quantified in this dataset, hexane stands out as largely attributed to O&NG production. Consistent with prior analyses, this work shows that the NFRMA is more strongly influenced by O&NG sources than many other U.S. urban regions. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	Colorado northern front range metropolitan area; multivariate regression; oil and natural gas production; positive matrix factorization; source apportionment; speciated volatile organic compounds
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185250
作者单位	Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States; Boulder A.I.R. LLC, Boulder, CO, United States
推荐引用方式 GB/T 7714	Pollack I.B.,Helmig D.,O'Dell K.,et al. Seasonality and Source Apportionment of Nonmethane Volatile Organic Compounds at Boulder Reservoir, Colorado, Between 2017 and 2019[J],2021,126(9).
APA	Pollack I.B.,Helmig D.,O'Dell K.,&Fischer E.V..(2021).Seasonality and Source Apportionment of Nonmethane Volatile Organic Compounds at Boulder Reservoir, Colorado, Between 2017 and 2019.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Pollack I.B.,et al."Seasonality and Source Apportionment of Nonmethane Volatile Organic Compounds at Boulder Reservoir, Colorado, Between 2017 and 2019".Journal of Geophysical Research: Atmospheres 126.9(2021).