Beijing Pilot Project


Representatives of CMA presented an urban environment research project which they have been devloping. This project titled: The Study of Mechanism on Atmospheric Environmental Pollution in Capital Beijing was presented as an example of the type of pilot project that GURME could help to promote. The project is summarized below:


Key scientific problems

  • Environmental and geochemical cycling processes and behavior of atmospheric pollutant.
  • The accumulative effect and tolerance of atmospheric pollutant in regional environments.
  • The prediction theory of atmospheric environment.
  • The principles of pollution control on regional scales.

Figure 27.  Air pollution macroscopic temporal and spatial distributions and characteristics of atmospheric motion

Scientific objectives

  • To reveal the forming mechanism of the regional atmospheric environment pollution and establish its prediction theory and model.
  • To design the optimal scheme of monitoring and warning system of main pollutants.
  • To foster the prevention strategies and new harnessing methods on regional environmental pollution.

Figure 28.  Chemical reaction mechanism of atmospheric pollution

Main topics

I.  The mechanism of the formation of PBL pollution and its effects on the environment in Beijing

1.1 The city PBL structure feature and the dynamic and thermodynamic characteristics of pollution air dome and its formation and decaying mechanism.

1.2 The chemical process of pollutant formation for city air dome and its tempral-spatial variation mechanism.

1.3 Temporal-spatial distribution, affecting factors and variation tendency of ozone and its environmental effect.

II.  The physical, chemical and ecological function of pollutant between atmosphere and planetary boundary layer

2.1 The chemical characteristics of dry and wet deposition, the physical and chemical features of aerosol and their transportation and transformation processes in Beijing.

2.2 Numerical simulation on the motion and transformation of main pollutants in atmosphere.

III.  Formation mechanism of sand-dust and its impact on urban environment in Beijing

3.1 The temporal-spatial distribution characteristics of sand-dust, the physical and chemical characteristics of sand aerosol and its impact on urban environment, radiation and water sediment in Beijing.

3.2 The thermodynamic and dynamic conditions for the formation and development of fly ash and its forecast theory in Beijing area.

IV.  Theory and method of city atmosphere environment pollution monitoring and forecasting

4.1 Scheme of optimal monitoring for atmospheric environment pollution.

4.2 Studies on high-resolution numerical prediction model for city air pollution and the scheme of its warning system.

V.  Atmospheric environment pollution regulation and tackling technique in a comprehensive way

5.1 Assessment method of the impact of Beijing city planning and building on air-environment pollution.

5.2 Studies on atmospheric environment pollution tackling method and related social-economic sustainable development.

Project Framework

  • The formation and its environmental effect of the urban atmospheric boundary layer pollution in Beijing.
  • The mechanism of fly dust formation and its urban environmental influence in Beijing region.
  • Physical, Chemical and Biological interaction and dynamical mechanism of pollutants between atmosphere and its planet boundary layer.
  • Urban atmospheric environmental pollution monitoring and prediction method.
  • Atmospheric environmental pollution management and comprehensive harnessing.

Approaches to the project

  • Comprehensive monitoring and identification of pollutant.
  • Experiment simulation and model.
  • Controlling and Harnessing.

Figure 29.  Urban atmospheric environmental pollution monitoring system

Figure 30.  Atmosphere pollution forecast model

Creativeness and distinguishing features

  • The chemical composition of pollutants, the feature of atmospheric structure of ?the air dome of pollution in Beijing?,and the theory of its generation, dissipation and evolution.
  • The strong non-linearity and strong heterogeneity between dynamical and physical processes in urban atmospheric boundary layer and the chemical reaction of pollutants, and their coupled theory.
  • Study on pollutant dynamical migration and transformation.