DOI: 10.1016/j.atmosenv.2014.12.016
Scopus记录号: 2-s2.0-84916941436
论文题名: An approach to investigate new particle formation in the vertical direction on the basis of high time-resolution measurements at ground level and sea level
作者: Meng H ; , Zhu Y ; , Evans G ; J ; , Yao X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 102 起始页码: 366
结束页码: 375
语种: 英语
英文关键词: Coefficient of variation
; FMPS
; New particle formation
; Particle growth
; Vertical transport
Scopus关键词: Atmospheric movements
; Urban growth
; Coefficient of variation
; FMPS
; New particle formation
; Particle growth
; Vertical transports
; Sea level
; concentration (composition)
; growth rate
; particle size
; seasonal variation
; urban area
; vertical movement
; air pollutant
; Article
; atmosphere
; boundary layer
; dry deposition
; environmental temperature
; exhaust gas
; growth rate
; high time resolution measurement
; highway
; measurement
; new particle formation
; particle size
; particulate matter
; plume
; pollution transport
; sea level
; summer
; velocity
; vertical direction
; wind
; wind speed
; Canada
; Ontario [Canada]
; 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 study, we investigated new particle formation (NPF) in the vertical direction using high time-resolution (1s) measurements made by Fast Mobility Particle Sizers at ground level and at sea level. The coefficient of variation (CV), i.e., the ratio of standard deviation to mean value for <100-nm particle number concentration (N100) in every 30s, is introduced as a metric to distinguish horizontal and vertical transport of atmospheric particles. We first examined the CV metric using the data collected at a semi-urban site in Toronto during the summer of 2007. The 50th and 95th percentiles of CVs associated with horizontal transport were 1-13 times smaller than those during strong vertical transport. We then compared the N100, GMD55 (geometric mean diameter of <55-nm particles) and GMD100 corresponding to the 0-5th percentiles of CVs with those corresponding to the 95-100th percentiles of CVs in five NPF events. The comparative results are discussed in terms of different formation and growth rates in the vertical direction. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82032
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, Toronto, ON, Canada
Recommended Citation:
Meng H,, Zhu Y,, Evans G,et al. An approach to investigate new particle formation in the vertical direction on the basis of high time-resolution measurements at ground level and sea level[J]. Atmospheric Environment,2015-01-01,102