气候变化领域集成服务门户(CCPortal): Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States; 1998

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DOI	10.1029/2020GL090195
	Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States; 1998–2018
	Haskins J.D.; Jaeglé L.; Thornton J.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Using deposition observations from precipitation samples collected by the National Atmospheric Deposition Program at 125 sites across the United States, we show that the mean wet deposition flux of non-sea-salt chloride (NSS Cl−) has decreased by 83% throughout the eastern United States between 1998 and 2018. We find that 30% of the sites switch from having excess Cl− to being depleted in Cl−. We attribute the observed decreases in NSS Cl− deposition to a 95% decrease in U.S. anthropogenic HCl emissions since 1998. We propose that industry emission controls that remove HCl as a cobenefit of NOx and SO2 have caused significant decreases in NSS Cl− deposition throughout the eastern United States, in addition to shifts from coal to natural gas and to coal with lower Cl− content. Our analysis implies that the lower tropospheric reactive inorganic chlorine burden was larger over the United States in the past than it is today. ©2020. The Authors.
英文关键词	Coal industry; Deposition; Meteorological problems; Sulfur dioxide; Uranium compounds; Co benefits; Industry emissions; National atmospheric deposition programs; Precipitation samples; Sea salts; Wet deposition; Wet deposition flux; Chlorine compounds; anthropogenic source; atmospheric pollution; chlorine; coal; industrial emission; marine ecosystem; natural gas; precipitation (chemistry); wet deposition; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169408
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Now at Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States
推荐引用方式 GB/T 7714	Haskins J.D.,Jaeglé L.,Thornton J.A.. Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States; 1998–2018[J],2020,47(22).
APA	Haskins J.D.,Jaeglé L.,&Thornton J.A..(2020).Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States; 1998–2018.Geophysical Research Letters,47(22).
MLA	Haskins J.D.,et al."Significant Decrease in Wet Deposition of Anthropogenic Chloride Across the Eastern United States; 1998–2018".Geophysical Research Letters 47.22(2020).