气候变化领域集成服务门户(CCPortal): Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California

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DOI	10.5194/acp-22-10937-2022
	Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California
	Liu, Shang; Barletta, Barbara; Hornbrook, Rebecca S.; Fried, Alan; Peischl, Jeff; Meinardi, Simone; Coggon, Matthew; Lamplugh, Aaron; Gilman, Jessica B.; Gkatzelis, Georgios, I; Warneke, Carsten; Apel, Eric C.; Hills, Alan J.; Bourgeois, Ilann; Walega, James; Weibring, Petter; Richter, Dirk; Kuwayama, Toshihiro; FitzGibbon, Michael; Blake, Donald
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	10937
结束页码	10954
卷号	22 期号:16 页码:18
英文摘要	Comprehensive aircraft measurements of volatile organic compounds (VOCs) covering the South Coast Air Basin (SoCAB) and San Joaquin Valley (SJV) of California were obtained in the summer of 2019. Combined with the CO, CH4, and NOx data, the total calculated gas-phase hydroxyl radical reactivity (cOHR(TOTAL)) was quantified to be 6.1 and 4.6 s(-1) for the SoCAB and SJV, respectively. VOCs accounted for similar to 60 %-70 % of the cOHR(TOTAL) in both basins. In particular, oxygenated VOCs (OVOCs) contributed >60 % of the cOHR of total VOCs (cOHR(VOC)) and the total observed VOC mixing ratio. Primary biogenic VOCs (BVOCs) represented a minor fraction (<2 %) of the total VOC mixing ratio but accounted for 21 % and 6 % of the cOHR(VOC) in the SoCAB and SJV, respectively. Furthermore, the contribution of BVOCs to the cOHR(VOC) increased with increasing cOHR(VOC) in the SoCAB, suggesting that BVOCs were important ozone precursors during high ozone episodes. Spatially, the trace gases were heterogeneously distributed in the SoCAB, with their mixing ratios and cOHR being significantly greater over the inland regions than the coast, while their levels were more evenly distributed in SJV. The results highlight that a better grasp of the emission rates and sources of OVOCs and BVOCs is essential for a predictive understanding of the ozone abundance and distribution in California.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000846862500001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273106
作者单位	University of California System; University of California Irvine; National Center Atmospheric Research (NCAR) - USA; University of Colorado System; University of Colorado Boulder; University of Colorado System; University of Colorado Boulder; National Oceanic Atmospheric Admin (NOAA) - USA; Helmholtz Association; Research Center Julich
推荐引用方式 GB/T 7714	Liu, Shang,Barletta, Barbara,Hornbrook, Rebecca S.,et al. Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California[J],2022,22(16):18.
APA	Liu, Shang.,Barletta, Barbara.,Hornbrook, Rebecca S..,Fried, Alan.,Peischl, Jeff.,...&Blake, Donald.(2022).Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(16),18.
MLA	Liu, Shang,et al."Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.16(2022):18.