Potential contribution of new particle formation to cloud condensation   nuclei in Beijing

doi:10.1016/j.atmosenv.2011.07.037

CORC > 北京大学 > 环境科学与工程学院

	Potential contribution of new particle formation to cloud condensation nuclei in Beijing
	Yue, D. L. ; Hu, M. ; Zhang, R. Y. ; Wu, Z. J. ; Su, H. ; Wang, Z. B. ; Peng, J. F. ; He, L. Y. ; Huang, X. F. ; Gong, Y. G. ; Wiedensohler, A.
刊名	大气环境
	2011
关键词	New particle formation Particle growth Cloud condensation nuclei Number concentration SIZE-RESOLVED MEASUREMENTS PEARL RIVER-DELTA ATMOSPHERIC NANOPARTICLES HYGROSCOPIC GROWTH AEROSOL-PARTICLES SULFURIC-ACID CCN ACTIVITY GLOBAL CCN MEGA-CITY NUCLEATION
DOI	10.1016/j.atmosenv.2011.07.037
英文摘要	New particle formation (NPF) events have been recognized as an important process contributing to the cloud condensation nuclei (CCN) formation. In this study, measurement of NPF and predicted number concentrations of CCN using kappa-Kohler theory were analyzed to assess the contribution of NPF to possible CCN. The particle growth rates of NPF events were categorized to two types: sulfur-rich (condensation and neutralization of sulfuric acid dominating net growth rate) and sulfur-poor cases. The growth rates for the sulfur-poor events were about 80% larger than those of the sulfur-rich cases on average. NPF events increased the CCN number concentrations by 0.4-6 times in the megacity area of Beijing. The enhancement ratios (the ratio of CCN number concentrations when obvious particle growth ended to that when it started during NPF events) were high for large supersaturation (S). For example, it was about 30-50% higher under S = 0.86% than under S = 0.07%. The enhancement ratios exhibited similar seasonal variation as the growth rates with a larger value in summer than other seasons, which suggested that growth rate was a key factor in the conversion of NPF to possible CCN. The enhancement ratios were higher during the sulfur-poor NPF events with larger growth rates mainly contributed by organic species, indicating that organic species were the dominant chemical contributor in facilitating the conversion of newly formed particles to possible CCN in the Beijing Megacity. (C) 2011 Elsevier Ltd. All rights reserved.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000295757300013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Environmental Sciences; Meteorology & Atmospheric Sciences; SCI(E); EI; 44; ARTICLE; 33; 6070-6077; 45
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/158406]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yue, D. L.,Hu, M.,Zhang, R. Y.,et al. Potential contribution of new particle formation to cloud condensation nuclei in Beijing[J]. 大气环境,2011.
APA	Yue, D. L..,Hu, M..,Zhang, R. Y..,Wu, Z. J..,Su, H..,...&Wiedensohler, A..(2011).Potential contribution of new particle formation to cloud condensation nuclei in Beijing.大气环境.
MLA	Yue, D. L.,et al."Potential contribution of new particle formation to cloud condensation nuclei in Beijing".大气环境 (2011).