气候变化领域集成服务门户(CCPortal): New methodology shows short atmospheric lifetimes of oxidized sulfur and nitrogen due to dry deposition

CCPortal

DOI	10.5194/acp-21-8377-2021
	New methodology shows short atmospheric lifetimes of oxidized sulfur and nitrogen due to dry deposition
	Hayden K.; Li S.-M.; Makar P.; Liggio J.; Moussa S.G.; Akingunola A.; McLaren R.; Staebler R.M.; Darlington A.; O'Brien J.; Zhang J.; Wolde M.; Zhang L.
发表日期	2021
ISSN	1680-7316
起始页码	8377
结束页码	8392
卷号	21 期号:11
英文摘要	The atmospheric lifetimes of pollutants determine their impacts on human health, ecosystems and climate, and yet, pollutant lifetimes due to dry deposition over large regions have not been determined from measurements. Here, a new methodology based on aircraft observations is used to determine the lifetimes of oxidized sulfur and nitrogen due to dry deposition over span classCombining double low line"inline-formula"math xmlnsCombining double low line"http://www.w3.org/1998/Math/MathML"idCombining double low line"M1"displayCombining double low line"inline"overflowCombining double low line"scroll"dspmathCombining double low line"mathml"mrowmo(/momn mathvariantCombining double low line"normal"3/mnmo-/momn mathvariantCombining double low line"normal"6/mnmo)/momo×/momsumn mathvariantCombining double low line"normal"10/mnmn mathvariantCombining double low line"normal"3/mn/msu/mrow/mathspansvg:svg xmlns:svgCombining double low line"http://www.w3.org/2000/svg"widthCombining double low line"61pt"heightCombining double low line"15pt"classCombining double low line"svg-formula"dspmathCombining double low line"mathimg"md5hashCombining double low line"68998d87f63f629611a2d18c2323c789"svg:image xmlns:xlinkCombining double low line"http://www.w3.org/1999/xlink"xlink:hrefCombining double low line"acp-21-8377-2021-ie00001.svg"widthCombining double low line"61pt"heightCombining double low line"15pt"srcCombining double low line"acp-21-8377-2021-ie00001.png"//svg:svg/span/span kmspan classCombining double low line"inline-formula"2/span of boreal forest in Canada. Dry deposition fluxes decreased exponentially with distance from the Athabasca oil sands sources, located in northern Alberta, resulting in lifetimes of 2.2-26 h. Fluxes were 2-14 and 1-18 times higher than model estimates for oxidized sulfur and nitrogen, respectively, indicating dry deposition velocities which were 1.2-5.4 times higher than those computed for models. A Monte Carlo analysis with five commonly used inferential dry deposition algorithms indicates that such model underestimates of dry deposition velocity are typical. These findings indicate that deposition to vegetation surfaces is likely underestimated in regional and global chemical transport models regardless of the model algorithm used. The model-observation gaps may be reduced if surface pH and quasi-laminar and aerodynamic resistances in algorithms are optimized as shown in the Monte Carlo analysis. Assessing the air quality and climate impacts of atmospheric pollutants on regional and global scales requires improved measurement-based understanding of atmospheric lifetimes of these pollutants./ © 2021 Copernicus GmbH. All rights reserved.
语种	英语
scopus关键词	algorithm; atmospheric chemistry; atmospheric deposition; computer simulation; dry deposition; Monte Carlo analysis; nitrogen; sulfur compound; Alberta
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/246843
作者单位	Air Quality Research Division, Environment and Climate Change Canada, Toronto, ON M3H 5T4, Canada; College of Environmental Science and Engineering, Peking University, Beijing, 100871, China; Center for Atmospheric Chemistry, York University, 4700 Keele Street, Toronto, ON, Canada; National Research Council Canada, Flight Research Laboratory, Ottawa, K1A 0R6, Canada
推荐引用方式 GB/T 7714	Hayden K.,Li S.-M.,Makar P.,et al. New methodology shows short atmospheric lifetimes of oxidized sulfur and nitrogen due to dry deposition[J],2021,21(11).
APA	Hayden K..,Li S.-M..,Makar P..,Liggio J..,Moussa S.G..,...&Zhang L..(2021).New methodology shows short atmospheric lifetimes of oxidized sulfur and nitrogen due to dry deposition.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(11).
MLA	Hayden K.,et al."New methodology shows short atmospheric lifetimes of oxidized sulfur and nitrogen due to dry deposition".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.11(2021).