Severe Pollution in China Amplified by Atmospheric Moisture

doi:10.1038/s41598-017-15909-1

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Severe Pollution in China Amplified by Atmospheric Moisture
	Chang, Di 5; Su, Hang 5; Huang, Ru-Jin 1,7,8,11; Cheng, Yafang 5; Cao, Junji 1; Tie, Xuexi 1,9,10,11; Zhang, Qiang 6; Dusek, Uli 3; Li, Guohui 1; Hoffmann, Thorsten 4
刊名	SCIENTIFIC REPORTS
	2017-11-17
卷号	7 期号:1
DOI	10.1038/s41598-017-15909-1
文献子类	Article
英文摘要	In recent years, severe haze events often occurred in China, causing serious environmental problems. The mechanisms responsible for the haze formation, however, are still not well understood, hindering the forecast and mitigation of haze pollution. Our study of the 2012-13 winter haze events in Beijing shows that atmospheric water vapour plays a critical role in enhancing the heavy haze events. Under weak solar radiation and stagnant moist meteorological conditions in winter, air pollutants and water vapour accumulate in a shallow planetary boundary layer (PBL). A positive feedback cycle is triggered resulting in the formation of heavy haze: (1) the dispersal of water vapour is constrained by the shallow PBL, leading to an increase in relative humidity (RH); (2) the high RH induces an increase of aerosol particle size by enhanced hygroscopic growth and multiphase reactions to increase particle size and mass, which results in (3) further dimming and decrease of PBL height, and thus further depressing of aerosol and water vapour in a very shallow PBL. This positive feedback constitutes a self-amplification mechanism in which water vapour leads to a trapping and massive increase of particulate matter in the near-surface air to which people are exposed with severe health hazards.
WOS关键词	PLANETARY BOUNDARY-LAYER ; PEARL RIVER-DELTA ; AEROSOL OPTICAL-PROPERTIES ; HAZE ; PARTICLES ; CLIMATE ; XINKEN ; IMPACT ; MODEL ; AIR
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000415658600005
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5380]
专题	地球环境研究所_粉尘与环境研究室
作者单位	1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China 2.Aerodyne Res Inc, Billerica, MA USA 3.Univ Groningen, Energy & Sustainabil Res Inst Groningen, Ctr Isotope Res, Groningen, Netherlands 4.Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, Duesbergweg 10-14, D-55128 Mainz, Germany 5.Max Planck Inst Chem, Multiphase Chem Dept, Mainz, Germany 6.Beijing Weather Modificat Off, Beijing, Peoples R China 7.Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Galway, Ireland 8.Natl Univ Ireland Galway, Sch Phys, Galway, Ireland 9.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA 10.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Chang, Di,Su, Hang,Huang, Ru-Jin,et al. Severe Pollution in China Amplified by Atmospheric Moisture[J]. SCIENTIFIC REPORTS,2017,7(1).
APA	Chang, Di.,Su, Hang.,Huang, Ru-Jin.,Cheng, Yafang.,Cao, Junji.,...&Worsnop, Douglas R..(2017).Severe Pollution in China Amplified by Atmospheric Moisture.SCIENTIFIC REPORTS,7(1).
MLA	Chang, Di,et al."Severe Pollution in China Amplified by Atmospheric Moisture".SCIENTIFIC REPORTS 7.1(2017).