气候变化领域集成服务门户(CCPortal): Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016

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DOI	10.5194/acp-19-12779-2019
	Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016
	Jeong D.; Seco R.; Gu D.; Lee Y.; Nault B.A.; Knote C.J.; Mcgee T.; Sullivan J.T.; Jimenez J.L.; Campuzano-Jost P.; Blake D.R.; Sanchez D.; Guenther A.B.; Tanner D.; Gregory Huey L.; Long R.; Anderson B.E.; Hall S.R.; Ullmann K.; Shin H.-J.; Herndon S.C.; Lee Y.; Kim D.; Ahn J.; Kim S.
发表日期	2019
ISSN	16807316
起始页码	12779
结束页码	12795
卷号	19 期号:19
英文摘要	Nitryl chloride (ClNO2) is a radical reservoir species that releases chlorine radicals upon photolysis. An integrated analysis of the impact of ClNO2 on regional photochemistry in the Seoul metropolitan area (SMA) during the Korea-United States Air Quality Study (KORUS-AQ) 2016 field campaign is presented. Comprehensive multiplatform observations were conducted aboard the NASA DC-8 and at two ground sites (Olympic Park, OP; Taehwa Research Forest, TRF), representing an urbanized area and a forested suburban region, respectively. Positive correlations between daytime Cl2 and ClNO2 were observed at both sites, the slope of which was dependent on O3 levels. The possible mechanisms are explored through box model simulations constrained with observations. The overall diurnal variations in ClNO2 at both sites appeared similar but the nighttime variations were systematically different. For about half of the observation days at the OP site the level of ClNO2 increased at sunset but rapidly decreased at around midnight. On the other hand, high levels were observed throughout the night at the TRF site. Significant levels of ClNO2 were observed at both sites for 4-5 h after sunrise. Airborne observations, box model calculations, and back-trajectory analysis consistently show that these high levels of ClNO2 in the morning are likely from vertical or horizontal transport of air masses from the west. Box model results show that chlorine-radical-initiated chemistry can impact the regional photochemistry by elevating net chemical production rates of ozone by 25% in the morning. © Author(s) 2019.
语种	英语
scopus关键词	air quality; airborne survey; atmospheric chemistry; atmospheric transport; chlorine; ground-based measurement; metropolitan area; oxidation; ozone; photochemistry; radical; Seoul [Seoul (ADS)]; Seoul [South Korea]; South Korea
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/144093
作者单位	Department of Earth System Science, University of California, Irvine, Irvine, CA, United States; School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States; Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, United States; Department of Chemistry, University of Colorado, Boulder, CO, United States; Meteorologisches Institut, Ludwig-Maximilians-Universität München, Munich, Germany; Atmospheric Chemistry and Dynamics Laboratory, NASA GSFC, Greenbelt, MD, United States; Office of Research and Development, U.S. EPA, Research Triangle Park, NC, United States; NASA Langley Research Center, Hampton, VA, United States; National Center for Atmospheric Research, Boulder, CO, United States; National Institute of Environmental Research, Incheon, South Korea; Aerodyne Research Inc., Billerica, MA, United States; Division of Environment and Sustainability, Hong Kong University of Science and Technology, Hong Kong, Hong Kong
推荐引用方式 GB/T 7714	Jeong D.,Seco R.,Gu D.,et al. Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016[J],2019,19(19).
APA	Jeong D..,Seco R..,Gu D..,Lee Y..,Nault B.A..,...&Kim S..(2019).Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016.Atmospheric Chemistry and Physics,19(19).
MLA	Jeong D.,et al."Integration of airborne and ground observations of nitryl chloride in the Seoul metropolitan area and the implications on regional oxidation capacity during KORUS-AQ 2016".Atmospheric Chemistry and Physics 19.19(2019).