2003, Volume 5, Issue 2
Strategic Study of CAE >> 2003, Volume 5, Issue 2
The Regional Characteristics of the Atmospheric Environment and the Impact of Dust-storm in Beijing
Center for Climate Impact Research, SEPA, Beijing 100012, China
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Abstract
The regional characteristics of the atmospheric environment and the impact in Beijing were discussed in details. Applying point set for the network, the transport passageways of the atmosphere were determined, and the concept of converging zone was put forward, and the characteristics of atmospheric pollution were analyzed. Applying the laser techniques, the vertical distribution of the aerosol was detected. It was shown that the environmental quality of the atmosphere in Beijing was relative to the pollution sources in the neighborhood around Beijing area. And it was confirmed that only by the simultaneous treatment of the pollution source in both Beijing and its neighborhood areas, can the environmental quality of the atmosphere in Beijing be improved.
By both the satellite detection techniques and the analysis of the wind stream fields of the atmosphere, the phenomena of dust-storm in China were researched, and the inner source and outersource of the dust-storm in China were determined. The especially strong dust-storm on March 22, 2002, was taken as an example, by which the distribution of the original sources of the dust-storm was resolved, and the lots of the bare lands in Spring in the north of the Yangzei River were involved. The initial process of the dust-storm appeared as a group of point sources, which were then combined into a sand-dust band. Finally, the dust-storm pollution of the large areas would appeare. The modern theory and concept for the environment in China were described chiefly.
Keywords
dust-storm ; transport passageway ; environment pollution ; China
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