DOI: 10.1016/j.atmosenv.2014.09.043
Scopus记录号: 2-s2.0-84927776918
论文题名: Comparative analysis of new particle formation events in less and severely polluted urban atmosphere
作者: Zhu Y ; , Sabaliauskas K ; , Liu X ; , Meng H ; , Gao H ; , Jeong C ; -H ; , Evans G ; J ; , Yao X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 655
结束页码: 664
语种: 英语
英文关键词: Cloud condensation nuclei
; NH4 NO3
; Nucleation
; Particle growth
; SOA
Scopus关键词: Condensation
; Light polarization
; Nucleation
; Cloud condensation nuclei
; Comparative analysis
; Comparative studies
; New particle formation
; Particle growth
; Secondary organic aerosols
; SOA
; Urban atmospheres
; Air pollution
; ammonia
; aerosol property
; atmospheric pollution
; cloud condensation nucleus
; particle size
; pollution monitoring
; urban atmosphere
; air pollution
; Article
; chemical composition
; chemical reaction
; climate
; comparative study
; controlled study
; equilibrium constant
; growth rate
; humidity
; particle size
; plume
; priority journal
; secondary organic aerosol
; solar radiation
; spring
; suspended particulate matter
; temperature
; urban area
; Canada
; China
; Ontario [Canada]
; Qingdao
; Shandong
; Toronto
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In this paper, we conducted a comparative study of new particle formation (NPF) events occurring between Qingdao and Toronto during spring. The extent of air pollution in Qingdao was much severer than that in Toronto, but the occurrence frequency of NPF events in Qingdao (41%) was almost same as that (42%) in Toronto. The geometric median diameter of new particles (Dpg,1 ) increased up to >40nm in 15 days out of the total 16 NPF days in Qingdao, the Dpg,1 at least in eight days increased up to >60nm and even reached >80nm in two days. Two-stage growth was generally observed in these eight NPF events. The first-stage growth occurred in daytime and it was likely associated with formation of secondary organic aerosol (SOA) on basis of the modeling results. The second-stage growth was generally observed at nighttime when the modeling results showed increases of NH4 + and NO3 - in concentration together with SOA, implying that NH4 NO3 possibly played a role in the growth. In Toronto, the maximum Dpg,1 of the observed new particles in all 13 NPF events was less than 50nm. A slight second-stage growth of new particles was observed only in four days when either the increase of NH4 + and NO3 - in concentration or the increase of relative humidity occurred. The NPF events in Toronto less likely had a significant contribution to cloud condensation nuclei due to the small size of the observed new particles. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80509
Appears in Collections: 气候变化事实与影响
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作者单位: Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, China; Southern Ontario Centre for Atmospheric Aerosol Research, University of Toronto, 200 College Street, Toronto, ON, Canada
Recommended Citation:
Zhu Y,, Sabaliauskas K,, Liu X,et al. Comparative analysis of new particle formation events in less and severely polluted urban atmosphere[J]. Atmospheric Environment,2014-01-01,98