气候变化领域集成服务门户(CCPortal): Missing OH reactivity in the global marine boundary layer

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DOI	10.5194/acp-20-4013-2020
	Missing OH reactivity in the global marine boundary layer
	Thames A.B.; Brune W.H.; Miller D.O.; Allen H.M.; Apel E.C.; Blake D.R.; Paul Bui T.; Commane R.; Crounse J.D.; Daube B.C.; Diskin G.S.; Digangi J.P.; Elkins J.W.; Hall S.R.; Hanisco T.F.; Hannun R.A.; Hintsa E.; Hornbrook R.S.; Kim M.J.; McKain K.; Moore F.L.; Nicely J.M.; Peischl J.; Ryerson T.B.; St. Clair J.M.; Sweeney C.; Teng A.; Thompson C.R.; Ullmann K.; Wennberg P.O.; Wolfe G.M.
发表日期	2020
ISSN	1680-7316
起始页码	4013
结束页码	4029
卷号	20 期号:6
英文摘要	The hydroxyl radical (OH) reacts with thousands of chemical species in the atmosphere, initiating their removal and the chemical reaction sequences that produce ozone, secondary aerosols, and gas-phase acids. OH reactivity, which is the inverse of OH lifetime, influences the OH abundance and the ability of OH to cleanse the atmosphere. The NASA Atmospheric Tomography (ATom) campaign used instruments on the NASA DC-8 aircraft to measure OH reactivity and more than 100 trace chemical species. ATom presented a unique opportunity to test the completeness of the OH reactivity calculated from the chemical species measurements by comparing it to the measured OH reactivity over two oceans across four seasons. Although the calculated OH reactivity was below the limit of detection for the ATom instrument used to measure OH reactivity throughout much of the free troposphere, the instrument was able to measure the OH reactivity in and just above the marine boundary layer. The mean measured value of OH reactivity in the marine boundary layer across all latitudes and all ATom deployments was 1.9 s-1, which is 0.5 s-1 larger than the mean calculated OH reactivity. The missing OH reactivity, the difference between the measured and calculated OH reactivity, varied between 0 and 3.5 s-1, with the highest values over the Northern Hemisphere Pacific Ocean. Correlations of missing OH reactivity with formaldehyde, dimethyl sulfide, butanal, and sea surface temperature sug gest the presence of unmeasured or unknown volatile organic compounds or oxygenated volatile organic compounds associated with ocean emissions. © 2020 by ASME.
语种	英语
scopus关键词	atmospheric chemistry; boundary layer; concentration (composition); hydroxyl radical; reactive transport; sea surface temperature; seasonal variation; Pacific Ocean
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/247871
作者单位	Department of Meteorology and Atmospheric Science, Pennsylvania State University, University Park, PA, United States; Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, United States; Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, United States; Department of Chemistry, University of California, Irvine, CA, United States; Earth Science Division, NASA Ames Research Center, Moffett Field, CA, United States; Department of Earth and Environmental Sciences, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States; Chemistry and Dynamics Branch, NASA Langley Research Center, Hampton, VA, United States; Global Monitoring Division, NOAA Earth System Research Laboratory, B...
推荐引用方式 GB/T 7714	Thames A.B.,Brune W.H.,Miller D.O.,et al. Missing OH reactivity in the global marine boundary layer[J],2020,20(6).
APA	Thames A.B..,Brune W.H..,Miller D.O..,Allen H.M..,Apel E.C..,...&Wolfe G.M..(2020).Missing OH reactivity in the global marine boundary layer.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(6).
MLA	Thames A.B.,et al."Missing OH reactivity in the global marine boundary layer".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.6(2020).