气候变化领域集成服务门户(CCPortal): Vapor isotopic evidence for the worsening of winter air quality by anthropogenic combustion-derived water

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DOI	10.1073/PNAS.1922840117
	Vapor isotopic evidence for the worsening of winter air quality by anthropogenic combustion-derived water
	Xing M.; Liu W.; Li X.; Zhou W.; Wang Q.; Tian J.; Li X.; Tie X.; Li G.; Cao J.; Bao H.; An Z.
发表日期	2021
ISSN	00278424
起始页码	33005
结束页码	33010
卷号	117 期号:52
英文摘要	Anthropogenic combustion-derived water (CDW) may accumulate in an airshed due to stagnant air, which may further enhance the formation of secondary aerosols and worsen air quality. Here we collected three-winter-season, hourly resolution, water-vapor stable H and O isotope compositions together with atmospheric physical and chemical data from the city of Xi’an, located in the Guanzhong Basin (GZB) in northwestern China, to elucidate the role of CDW in particulate pollution. Based on our experimentally determined water vapor isotope composition of the CDW for individual and weighted fuels in the basin, we found that CDW constitutes 6.2% of the atmospheric moisture on average and its fraction is positively correlated with [PM2.5] (concentration of particulate matter with an aerodynamic diameter less than 2.5 μm) as well as relative humidity during the periods of rising [PM2.5]. Our modeling results showed that CDW added additional average 4.6 μg m−3 PM2.5 during severely polluted conditions in the GZB, which corresponded to an average 5.1% of local anthropogenic [PM2.5] (average at ∼91.0 μg m−3). Our result is consistent with the proposed positive feedback between the relative humidity and a moisture sensitive air-pollution condition, alerting to the nontrivial role of CDW when considering change of energy structure such as a massive coal-to-gas switch in household heating in winter. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Air quality; Water vapor isotopes; Winter haze; WRF-Chem simulation
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179608
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China; Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi’an, 710061, China; Key Laboratory of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, 710061, China; Interdisciplinary Research Center of Earth Science Frontier, Beijing Normal University, Beijing, 100875, China; Open Studio for Oceanic-Continental Climate and Environment Changes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China; Department of Earth and Environmental Sciences, Xi’an Jiaotong University, Xi’an, 710049, China; International Center for Isotope Effects Research, School of Earth Science and Engineering, Nanjing University, Nanjing, 210023, China; Department of Geology and Geophysics, Louisiana State University, Baton Rouge, LA 70803, United States
推荐引用方式 GB/T 7714	Xing M.,Liu W.,Li X.,et al. Vapor isotopic evidence for the worsening of winter air quality by anthropogenic combustion-derived water[J],2021,117(52).
APA	Xing M..,Liu W..,Li X..,Zhou W..,Wang Q..,...&An Z..(2021).Vapor isotopic evidence for the worsening of winter air quality by anthropogenic combustion-derived water.Proceedings of the National Academy of Sciences of the United States of America,117(52).
MLA	Xing M.,et al."Vapor isotopic evidence for the worsening of winter air quality by anthropogenic combustion-derived water".Proceedings of the National Academy of Sciences of the United States of America 117.52(2021).