Self-organized evolution of trans-boundary PM10 pollution in Zhoushan CityChinese Full Text
SHI Kai;LIU Chunqiong;WU Shenghu;Key Laboratory for Ecotourism of Hunan Province,Jishou University;College of Biology and Environmental Sciences,Jishou University;
Abstract: The inter-city transport of air pollutants is significant in China. Air pollutants transported from other cities in the Yangtze River Delta contributed more significantly than local emissions to the pollution in Zhoushan City. With frequency analysis,we found that the PM10 hourly concentrations in Zhoushan city appeared to be scale-invariant within the range of 0. 065 0. 324 mg·m-3,and were characterized by a power-law distribution. In order to investigate the mechanism for such characteristics in PM10 concentrations distributions,a self-organized criticality（SOC）-based numerical sandpile model was developed. This model takes into account pollutants trans-boundary transport,the formation of secondary pollutants,pollutants intra-city diffusion and transport,and pollutants sink and decay for nonlinear recursive simulation. The impact of the regional meteorological factors such as wind field on the model was also further discussed.
Keywords：
PM10; transboundary air pollution; power-law distribution; self-organized criticality; sandpile modexl;
- DOI：
10.13671/j.hjkxxb.2014.0177
- Series：
- Subject：
- Classification Code：
X513
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