Below-cloud scavenging of aerosol particles by precipitation in a typical valley city, northwestern China (EI)

CORC > 寒区旱区环境与工程研究所 > 中科院寒区旱区环境与工程研究所（未分类） > 期刊论文

	Below-cloud scavenging of aerosol particles by precipitation in a typical valley city, northwestern China (EI)
	Zhao S.; Yu Y.; He J.; Yin D.; Wang B.
刊名	Atmospheric Environment
	2015
卷号	102 页码:70-78
英文摘要	To fill the blank information for aerosol precipitation-scavenging research in north-west of China, the aerosol particle and raindrop size distributions were measured simultaneously during 1 September 2012 to 31 August 2013 in urban Lanzhou. The scavenging coefficients of thunderstorm and non-thunderstorm rain and snow events were studied and presented on the basis of nine selected precipitation cases including 3 snow and 6 rain events. The variation of scavenging coefficients of snowfall across the size distribution clearly exhibited a trough of lower values for particles of 1000 nm-2000 nm in diameter, while the particles smaller than 500 nm were scavenged efficiently by non-thunderstorm rain, and thunderstorm rain more effectively scavenged the particles in 500-1000 nm. The snow scavenging coefficients varied between 3.11 10-7s-1and 1.18 10-3s-1in the 10-10,000 nm size range. The scavenging coefficients of thunderstorm (non-thunderstorm) rain were between 8.25 10-7s-1(7.48 10-6s-1) and 1.23 10-3s-1(7.46 10-4s-1). Additionally, the number of particles in 10-50 nm was more sensitive to duration of snow, while snowfall intensity was more responsible for particle number concentrations in 50-100 nm and 100-1000 nm. The longer period of precipitation with lower raindrop velocity can more effectively scavenge the particles in the size range of 10-50 nm. 2014 Elsevier Ltd.
收录类别	EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.casnw.net/handle/362004/27171]
专题	寒区旱区环境与工程研究所_中科院寒区旱区环境与工程研究所（未分类）_期刊论文
推荐引用方式 GB/T 7714	Zhao S.,Yu Y.,He J.,et al. Below-cloud scavenging of aerosol particles by precipitation in a typical valley city, northwestern China (EI)[J]. Atmospheric Environment,2015,102:70-78.
APA	Zhao S.,Yu Y.,He J.,Yin D.,&Wang B..(2015).Below-cloud scavenging of aerosol particles by precipitation in a typical valley city, northwestern China (EI).Atmospheric Environment,102,70-78.
MLA	Zhao S.,et al."Below-cloud scavenging of aerosol particles by precipitation in a typical valley city, northwestern China (EI)".Atmospheric Environment 102(2015):70-78.