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Chinese Science Bulletin

, Volume 48, Issue 8, pp 819–825 | Cite as

Localized 3D-structural features of dynamic-chemical processes of urban air pollution in Beijing winter

  • Xiangde Xu
  • Guoan Ding
  • Li Zhou
  • Xiangdong Zheng
  • Lingen Bian
  • Jinheng Qiu
  • Liquan Yang
  • Jietai Mao
Reports

Abstract

The Beijing City Air Pollution Observation Field Experiment (BECAPEX) is described with emphases on the “point-surface” research approach and composite analysis. The analysis results of measurements from four observation sites across the Beijing urban area from January to March indicate that the overall impact of urban emission sources in the heating season is significant, and the staggered impact of urban emission sources has different features at observation sites over different parts of Beijing in both heating and non-heating seasons. The pollutants NO x , SO2 and CO in the urban boundary layer have the in-phase variation features over a large area. O3 concentrations at different sites have the same variation trend but its change is reversed phases with above pollutants. The pollutants over the urban area in heating and non-heating seasons also have the synchronous variation trend. The comprehensive sounding of BECAPEX indicates that pollutants and aerosol vertical profiles are closely correlated to the vertical structure of the large-scale inversion layer in the urban boundary layer over the urban area. The localized 3D-structural features of local urban polluting processes associated with the peripheral areas are discussed with a “point-surface” comprehensive sounding technique.

Keywords

air pollution aerosol 3D structure satellite remote sensing localization 

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Copyright information

© Science in China Press 2003

Authors and Affiliations

  • Xiangde Xu
    • 1
  • Guoan Ding
    • 1
  • Li Zhou
    • 1
  • Xiangdong Zheng
    • 1
  • Lingen Bian
    • 1
  • Jinheng Qiu
    • 2
  • Liquan Yang
    • 2
  • Jietai Mao
    • 3
  1. 1.Chinese Academy of Meteorological SciencesBeijingChina
  2. 2.Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina
  3. 3.Department of Atmospheric SciencesPeking UniversityBeijingChina

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