DOI: 10.1016/j.atmosenv.2017.10.018
Scopus记录号: 2-s2.0-85031088340
论文题名: Synergy between air pollution and urban meteorological changes through aerosol-radiation-diffusion feedback―A case study of Beijing in January 2013
作者: Kajino M ; , Ueda H ; , Han Z ; , Kudo R ; , Inomata Y ; , Kaku H
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 98
结束页码: 110
语种: 英语
英文关键词: Atmospheric stratification
; Fog formation
; Numerical simulation
; Positive feedback of emission control
; Severe haze
Scopus关键词: Aerosols
; Air pollution control
; Computer simulation
; Emission control
; Feedback
; Fog
; Mixing
; Numerical models
; Pollution
; Pollution control
; Precipitation (meteorology)
; Radiation effects
; Wind
; Atmospheric stratification
; Fog formation
; Pollutant emission control
; Severe haze
; Solar-radiation fluxes
; Stable stratification
; Surface air temperatures
; Wind speed and directions
; Air pollution
; aerosol
; air temperature
; atmospheric pollution
; concentration (composition)
; emission control
; fog
; haze
; longwave radiation
; meteorology
; numerical model
; solar radiation
; urban atmosphere
; urban pollution
; wind velocity
; aerosol
; air pollutant
; air pollution
; air pollution control
; air temperature
; Article
; China
; diffusion
; fog
; meteorological phenomena
; model
; night
; positive feedback
; precipitation
; priority journal
; solar radiation
; urban area
; Beijing [China]
; China
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 interactions of aerosol-radiation-stratification-turbulence-cloud processes during a severe haze event in Beijing in January 2013 were studied using a numerical model. For the clear days, solar radiation flux was reduced by approximately 15% and surface temperature was slightly decreased from 0 to 0.5 K throughout the day and night, except for a 1.4 K decrease around sunrise when fog was presented. The longwave radiation cooling was intensified by the fog or drizzle droplets near the top of the fog layer. Thus, in Beijing, both in the daytime and at night, the surface air temperature was decreased by air pollutants. In the presence of the low-level stratus and light precipitation, the modification of meteorology by aerosols was amplified and changed the wind speed and direction much more significantly compared to clear days. The non-linear effect (or positive feedback) of pollutant emission control on the surface air concentration was newly assessed―severe air pollution leads to the intensification of stable stratification near the surface at night and delays the evolution of the mixing layer, which in turn causes more severe air pollution. The non-linear effect was not significant for the current emission levels in the current case, approximately 10%. In another word, the mixing ratio of aerosols became higher by 10% due to their radiation effects. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82186
Appears in Collections: 气候变化事实与影响
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作者单位: Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Ibaraki, Japan; Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan; RIKEN Advanced Institute for Computational Science, Kobe, Hyogo, Japan; Disaster Prevention Research Institute, Kyoto University, Uji, Kyoto, Japan; Suuri-Keikaku Co. Ltd., Chiyoda, Tokyo, Japan; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa, Ishikawa, Japan; Information Literacy Co. Ltd., Chiyoda, Tokyo, Japan
Recommended Citation:
Kajino M,, Ueda H,, Han Z,et al. Synergy between air pollution and urban meteorological changes through aerosol-radiation-diffusion feedback―A case study of Beijing in January 2013[J]. Atmospheric Environment,2017-01-01,171