DOI: 10.1016/j.atmosenv.2018.03.005
Scopus记录号: 2-s2.0-85043393963
论文题名: Impacts of synoptic condition and planetary boundary layer structure on the trans-boundary aerosol transport from Beijing-Tianjin-Hebei region to northeast China
作者: Miao Y ; , Guo J ; , Liu S ; , Zhao C ; , Li X ; , Zhang G ; , Wei W ; , Ma Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 181 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Aerosol pollution
; Aerosol-PBL feedback
; Planetary boundary layer
; Synoptic conditions
; Trans-boundary transport
Scopus关键词: Aerosols
; Air quality
; Atmospheric thermodynamics
; Boundary layers
; Pollution
; Beijing-tianjin-hebei regions
; Meteorological condition
; Meteorological factors
; Planetary boundary layers
; Surface observation
; Synoptic conditions
; Three dimensional simulations
; Trans-boundary
; Air pollution
; advection
; aerosol
; air mass
; air quality
; atmospheric forcing
; atmospheric pollution
; atmospheric transport
; boundary layer
; emission
; feedback mechanism
; inversion layer
; particulate matter
; pollutant transport
; synoptic meteorology
; transboundary pollution
; vertical mixing
; westerly
; aerosol
; air pollutant
; air pollution
; air pollution control
; air quality
; Article
; atmospheric transport
; boundary layer
; China
; environmental impact
; meteorology
; particle size
; particulate matter
; plume
; priority journal
; simulation
; wind
; winter
; Beijing [China]
; China
; Hebei
; Liaoning
; Shenyang
; 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: The northeastern China frequently experiences severe aerosol pollution in winter under unfavorable meteorological conditions. How and to what extent the meteorological factors affect the air quality there are not yet clearly understood. Thus, this study investigated the impacts of synoptic patterns on the aerosol transport and planetary boundary layer (PBL) structure in Shenyang from 1 to 3 December 2016, using surface observations, sounding measurements, satellite data, and three-dimensional simulations. Results showed that the aerosol pollution occurred in Shenyang was not only related to the local emissions, but also contributed by trans-boundary transport of aerosols from the Beiijng-Tianjin-Hebei (BTH) region. In the presence of the westerly and southwesterly synoptic winds, the aerosols emitted from BTH could be brought to Shenyang. From December 2 to 3, the aerosols emitted from BTH accounted for ∼20% of near-surface PM2.5 in Shenyang. In addition, the large-scale synoptic forcings could affect the vertical mixing of pollutants through modulating the PBL structure in Shenyang. The westerly and southwesterly synoptic winds not only brought the aerosols but also the warmer air masses from the southwest regions to Shenyang. The strong warm advections above PBL could enhance the already existing thermal inversion layers capping over PBL in Shenyang, leading to the suppressions of PBL. Both the trans-boundary transport of aerosols and the suppressions of PBL caused by the large-scale synoptic forcings should be partly responsible for the poor air quality in Shenyang, in addition to the high pollutant emissions. The present study revealed the physical mechanisms underlying the aerosol pollution in Shenyang, which has important implications for better forecasting and controlling the aerosols pollution. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82921
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Severe Weather & Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, China; Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China; School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; Institute of Atmospheric Environment, China Meteorological Administration, Shenyang, China
Recommended Citation:
Miao Y,, Guo J,, Liu S,et al. Impacts of synoptic condition and planetary boundary layer structure on the trans-boundary aerosol transport from Beijing-Tianjin-Hebei region to northeast China[J]. Atmospheric Environment,2018-01-01,181