DOI: 10.1016/j.atmosenv.2015.09.013
Scopus记录号: 2-s2.0-84951567106
论文题名: Process analysis of regional aerosol pollution during spring in the Pearl River Delta region, China
作者: Fan Q ; , Lan J ; , Liu Y ; , Wang X ; , Chan P ; , Hong Y ; , Feng Y ; , Liu Y ; , Zeng Y ; , Liang G
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 122 起始页码: 829
结束页码: 838
语种: 英语
英文关键词: PM2.5
; Process analysis
; WRF/SMOKE/CMAQ model system
Scopus关键词: Aerosols
; Air pollution
; Air quality
; Atmospheric humidity
; Atmospheric movements
; Fog
; Pollution
; Quality control
; Air pollution episodes
; Higher relative humidity
; Liquid-phase reaction
; Model system
; Numerical simulation analysis
; Pearl River Delta region
; Pollutant concentration
; Process analysis
; River pollution
; aerosol composition
; air quality
; airflow
; atmospheric modeling
; atmospheric pollution
; global warming
; particulate matter
; pollutant transport
; relative humidity
; visibility
; aerosol
; air pollution
; air quality
; altitude
; Article
; chemical reaction
; China
; controlled study
; dry deposition
; environmental monitoring
; humidity
; particulate matter
; pollutant
; pollution
; pollution transport
; priority journal
; river
; simulation
; spring
; weather
; China
; Guangdong
; Zhujiang Delta
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: A numerical simulation analysis was performed for three air pollution episodes in the Pearl River Delta (PRD) region during March 2012 using the third-generation air quality modeling system Models-3/CMAQ. The results demonstrated that particulate matter was the primary pollutant for all three pollution episodes and was accompanied by relatively low visibility in the first two episodes. Weather maps indicate that the first two episodes occurred under the influence of warm, wet southerly air flow systems that led to high humidity throughout the region. The liquid phase reaction of gaseous pollutants resulted in the generation of fine secondary particles, which were identified as the primary source of pollution in the first two episodes. The third pollution episode occurred during a warming period following a cold front. Relative humidity was lower during this episode, and coarse particles were the major pollution contributor. Results of process analysis indicated that emissions sources, horizontal transport and vertical transport were the primary factors affecting pollutant concentrations within the near-surface layer during all three episodes, while aerosol processes, cloud processes, horizontal transport and vertical transport had greater influence at approximately 900 m above ground. Cloud processes had a greater impact during the first two pollution episodes because of the higher relative humidity. In addition, by comparing pollution processes from different cities (Guangzhou and Zhongshan), the study revealed that the first two pollution episodes were the result of local emissions within the PRD region and transport between surrounding cities, while the third episode exhibited prominent regional pollution characteristics and was the result of regional pollutant transport. © 2015 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81396
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangzhou Climate and Agrometeorology Center, Guangzhou, China; Guangdong Ecological Meteorology Center, Guangzhou, China; Hong Kong Observatory, Hong Kong; Guangdong Key Laboratory of Regional Numerical Forecast, Guangzhou, China; Guangzhou Environmental Monitoring, Guangzhou, China
Recommended Citation:
Fan Q,, Lan J,, Liu Y,et al. Process analysis of regional aerosol pollution during spring in the Pearl River Delta region, China[J]. Atmospheric Environment,2015-01-01,122