DOI: 10.1016/j.atmosenv.2013.10.022
Scopus记录号: 2-s2.0-84887140681
论文题名: New indices for wet scavenging of air pollutants (O3, CO, NO2, SO2, and PM10) by summertime rain
作者: Yoo J ; -M ; , Lee Y ; -R ; , Kim D ; , Jeong M ; -J ; , Stockwell W ; R ; , Kundu P ; K ; , Oh S ; -M ; , Shin D ; -B ; , Lee S ; -J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 82 起始页码: 226
结束页码: 237
语种: 英语
英文关键词: Air pollutants
; Rainfall
; Statistical significance
; Surface measurement over South Korea
; Washout
Scopus关键词: Air pollutant concentrations
; Air pollutants
; Negative correlation
; Precipitation episodes
; Precipitation scavenging
; South Korea
; Statistical significance
; Washout
; Air pollution
; Atmospheric chemistry
; Infiltration
; Meteorology
; Nitrogen oxides
; Sulfur dioxide
; Surface measurement
; Rain
; carbon monoxide
; nitrogen dioxide
; ozone
; rain
; sulfur dioxide
; atmospheric pollution
; concentration (composition)
; convection
; particulate matter
; pollutant
; rainfall
; troposphere
; vertical mixing
; aerosol
; air pollutant
; article
; concentration (parameters)
; lightning
; precipitation
; priority journal
; stratosphere
; thermodynamics
; South Korea
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: The washout effect of summertime rain on surface air pollutants (O3, CO, NO2, SO2, and PM10) has been investigated over South Korea during 2002-2012 using routinely available air-monitored and meteorological data. Three new washout indices for PM10, SO2, NO2, and CO are developed to express the effect of precipitation scavenging on these pollutants. All of these pollutants show statistically significant negative correlations between their concentrations and rain intensity due to washout or convection. The washout effect is estimated for precipitation episodes classified by rain intensity (one set included all episodes and another included a subset of moderate intensity episodes that exclude Changma and typhoons), based on the log-transformed hourly data. The most sensitive air pollutant to the rain onset among these five air pollutants is PM10. The relative effect of the rainfall washout on the air pollutant concentrations is estimated to be: PM10SO2NO2>CO>O3, indicating that PM10 is most effectively scavenged by rainfall. The analysis suggests that the O3 concentrations may increase due to vertical mixing leading to its downward transport from the lower stratosphere/upper troposphere. The concentrations of CO are reduced, probably due to both the washout and convection. The concentrations of NO2 are affected by the opposing influences of lightning-generation and washout and this are discussed as well. © 2013 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81042
Appears in Collections: 气候变化事实与影响
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作者单位: Dept. of Science Education, Ewha Womans University, Seoul, South Korea; Dept. of Atmospheric Sciences, Yonsei University, Seoul, South Korea; Universities Space Research Association, Columbia, MD, United States; Dept. of Atmospheric and Environmental Sciences, Gangneung-Wonju National University, Gangneung, South Korea; Dept. of Chemistry, Howard University, Washington, DC, United States; JCET, University of Maryland Baltimore County, Baltimore, MD, United States; NASA/Goddard Space Flight Center, Greenbelt, MD, United States; National Institute of Environmental Research, Inchon, South Korea
Recommended Citation:
Yoo J,-M,, Lee Y,et al. New indices for wet scavenging of air pollutants (O3, CO, NO2, SO2, and PM10) by summertime rain[J]. Atmospheric Environment,2014-01-01,82