气候变化领域集成服务门户(CCPortal): Exploring Oxidation in the Remote Free Troposphere: Insights From Atmospheric Tomography (ATom)

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DOI	10.1029/2019JD031685
	Exploring Oxidation in the Remote Free Troposphere: Insights From Atmospheric Tomography (ATom)
	Brune W.H.; Miller D.O.; Thames A.B.; Allen H.M.; Apel E.C.; Blake D.R.; Bui T.P.; 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.J.; Hornbrook R.S.; Kim M.J.; McKain K.; Moore F.L.; Neuman J.A.; Nicely J.M.; Peischl J.; Ryerson T.B.; St. Clair J.M.; Sweeney C.; Teng A.P.; Thompson C.; Ullmann K.; Veres P.R.; Wennberg P.O.; Wolfe G.M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:1
英文摘要	Earth's atmosphere oxidizes the greenhouse gas methane and other gases, thus determining their lifetimes and oxidation products. Much of this oxidation occurs in the remote, relatively clean free troposphere above the planetary boundary layer, where the oxidation chemistry is thought to be much simpler and better understood than it is in urban regions or forests. The NASA airborne Atmospheric Tomography study (ATom) was designed to produce cross sections of the detailed atmospheric composition in the remote atmosphere over the Pacific and Atlantic Oceans during four seasons. As part of the extensive ATom data set, measurements of the atmosphere's primary oxidant, hydroxyl (OH), and hydroperoxyl (HO2) are compared to a photochemical box model to test the oxidation chemistry. Generally, observed and modeled median OH and HO2 agree to within combined uncertainties at the 2σ confidence level, which is ~±40%. For some seasons, this agreement is within ~±20% below 6-km altitude. While this test finds no significant differences, OH observations increasingly exceeded modeled values at altitudes above 8 km, becoming ~35% greater, which is near the combined uncertainties. Measurement uncertainty and possible unknown measurement errors complicate tests for unknown chemistry or incorrect reaction rate coefficients that would substantially affect the OH and HO2 abundances. Future analysis of detailed comparisons may yield additional discrepancies that are masked in the median values. © 2019. The Authors.
英文关键词	atmospheric chemistry; hydroxyl; remote troposphere
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/186244
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 of Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, 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, Earth System Research Laboratory, NOAA, Boulder, CO, United States; Atmospheric Chemistry and Dynamics Laboratory, NASA Goddard Space Flight Center, G...
推荐引用方式 GB/T 7714	Brune W.H.,Miller D.O.,Thames A.B.,et al. Exploring Oxidation in the Remote Free Troposphere: Insights From Atmospheric Tomography (ATom)[J],2020,125(1).
APA	Brune W.H..,Miller D.O..,Thames A.B..,Allen H.M..,Apel E.C..,...&Wolfe G.M..(2020).Exploring Oxidation in the Remote Free Troposphere: Insights From Atmospheric Tomography (ATom).Journal of Geophysical Research: Atmospheres,125(1).
MLA	Brune W.H.,et al."Exploring Oxidation in the Remote Free Troposphere: Insights From Atmospheric Tomography (ATom)".Journal of Geophysical Research: Atmospheres 125.1(2020).