DOI: 10.1016/j.atmosenv.2015.09.011
Scopus记录号: 2-s2.0-84941271730
论文题名: Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China
作者: Shen X ; J ; , Sun J ; Y ; , Zhang X ; Y ; , Zhang Y ; M ; , Zhang L ; , Che H ; C ; , Ma Q ; L ; , Yu X ; M ; , Yue Y ; , Zhang Y ; W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 120 起始页码: 307
结束页码: 316
语种: 英语
英文关键词: Air mass origin
; Light extinction of submicron aerosol
; Particle number size distribution
; Secondary aerosol formation
; Severe haze-fog
Scopus关键词: Aerosols
; Balloons
; Light extinction
; Nitrates
; Optical properties
; Particle size
; Size distribution
; Visibility
; Air mass origin
; Extinction coefficients
; Formation and evolutions
; Light extinction coefficients
; Particle number size distribution
; Secondary aerosols
; Submicron aerosol
; Yangtze river delta
; Fog
; nitrate
; sulfate
; aerosol composition
; aerosol formation
; air mass
; atmospheric pollution
; concentration (composition)
; extinction coefficient
; fog
; haze
; particle size
; particulate matter
; pollution monitoring
; relative humidity
; size distribution
; spatiotemporal analysis
; visibility
; aerosol
; air pollutant
; air quality
; air temperature
; Article
; chemical composition
; China
; fog
; haze
; humidity
; meteorological phenomena
; meteorology
; particle size
; particulate matter
; priority journal
; time series analysis
; visibility
; water transport
; water vapor
; weather
; China
; North China Plain
; Yangtze 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: Particle size, composition and optical properties were measured at a regional atmosphere background station in the Yangtze River Delta (YRD) to understand the formation and evolution of haze-fog episodes in Jan. 2013. The peak of particle number size distribution was in the size range of 80-100 nm during the measurements. PM1 mass concentration contributed 84% to the total particle mass (PM10). Based on visibility and ambient relative humidity, three types of weather conditions (i.e., clear, haze and fog) were classified in this study. The extinction coefficients of PM1 and PM10 under dry conditions were simulated by the Mie model. Under dry conditions, PM1 was found to contribute approximately 91% to the light extinction coefficient of PM10. However, the PM1 with the assumption of dry state was found to contribute approximately 85% to the ambient extinction coefficient of PM10 during clear conditions, 58% during haze conditions and approximately 41% during fog conditions. The variation of the dry PM1 contribution was related to the water uptake of particles under different relative humidity conditions. A severe haze-fog event on Jan. 14-17 was discussed in more detail as a case study. Two episodes were chosen to show that nitrate and organics dominated the aerosol component during the severe haze-fog episode and were related to secondary aerosol formation and air mass origin. Nitrate played a more dominant role than sulfate in heavy haze formation in the YRD region, which was different from the North China Plain region. © 2015 The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81502
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory of Atmospheric Chemistry of CMA, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, Beijing, China; State Key Laboratory of Cryospheric Sciences, Cold and Arid Region Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, China; Lin'an Atmospheric Background Station, Meteorological Bureau of Zhejiang Province, China
Recommended Citation:
Shen X,J,, Sun J,et al. Characterization of submicron aerosols and effect on visibility during a severe haze-fog episode in Yangtze River Delta, China[J]. Atmospheric Environment,2015-01-01,120