DOI: 10.1016/j.atmosenv.2017.05.006
Scopus记录号: 2-s2.0-85019650147
论文题名: Spatially and chemically resolved source apportionment analysis: Case study of high particulate matter event
作者: Kim B ; -U ; , Bae C ; , Kim H ; C ; , Kim E ; , Kim S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 162 起始页码: 55
结束页码: 70
语种: 英语
英文关键词: CAMx
; East Asia
; PM event
; Secondary inorganic aerosol
; Source contribution
; South Korea
Scopus关键词: Air quality
; CAMx
; East Asia
; Secondary inorganic aerosol
; Source contributions
; South Korea
; Aerosols
; ammonia
; ammonium sulfate
; nitrate
; sulfate
; aerosol
; air quality
; ammonium
; atmospheric pollution
; chemical analysis
; concentration (composition)
; nitrate
; particle size
; particulate matter
; performance assessment
; source apportionment
; spatial analysis
; spatiotemporal analysis
; sulfate
; aerosol
; air quality
; Article
; chemical composition
; China
; model
; particulate matter
; priority journal
; South Korea
; Beijing [China]
; China
; Hebei
; Seoul [South Korea]
; South Korea
; Tianjin
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: This article presents the results of a detailed source apportionment study of the high particulate matter (PM) event in the Seoul Metropolitan Area (SMA), South Korea, during late February 2014. Using the Comprehensive Air Quality Model with Extensions with its Particulate Source Apportionment Technology (CAMx-PSAT), we defined 10 source regions, including five in China, for spatially and chemically resolved analyses. During the event, the spatially averaged PM10 concentration at all PM10 monitors in the SMA was 129 μg/m3, while the PM10 and PM2.5 concentrations at the BulGwang Supersite were 143 μg/m3 and 123 μg/m3, respectively. CAMx-PSAT showed reasonably good PM model performance in both China and the SMA. For February 23–27, CAMx-PSAT estimated that Chinese contributions to the SMA PM10 and PM2.5 were 84.3 μg/m3 and 80.0 μg/m3, respectively, or 64% and 70% of the respective totals, while South Korea's respective domestic contributions were 36.5 μg/m3 and 23.3 μg/m3. We observed that the spatiotemporal pattern of PM constituent concentrations and contributions did not necessarily follow that of total PM10 and PM2.5 concentrations. For example, Beijing-Tianjin-Hebei produced high nitrate concentrations, but the two most-contributing regions to PM in the SMA were the Near Beijing area and South Korea. In addition, we noticed that the relative contributions from each region changed over time. We found that most ammonium mass that neutralized Chinese sulfate mass in the SMA came from South Korean sources, indicating that secondary inorganic aerosol in the SMA, especially ammonium sulfates, during this event resulted from different major precursors originating from different regions. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82616
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Georgia Environmental Protection Division, Atlanta, GA, United States; Department of Environmental and Safety Engineering, Ajou University, Suwon, South Korea; Air Resources Laboratory, National Oceanic and Atmospheric Administration, College ParkMD, United States; Cooperative Institute for Climate and Satellites, University of Maryland, College ParkMD, United States
Recommended Citation:
Kim B,-U,, Bae C,et al. Spatially and chemically resolved source apportionment analysis: Case study of high particulate matter event[J]. Atmospheric Environment,2017-01-01,162