The GIS-based modeling of Kaifeng old city zone vehicle emission dispersion

This paper researches on the dispersion of vehicle emission pollution under the influence of terrain, construction and weather which are very important factors on urban air pollution analyzing and forecasting. The research includes the following three aspects: Firstly, some models that could calibrate the most basic emission parameter according to the actual data in the old city zone of Kaifeng were created by revising MOBILE6.2 developed by the American EPA. Secondly, on the research of some vehicle emission evaluation models, equations were built to simulate Vehicle Emission pollution under the condition of wind and continuous spot-source. Finally, we give a case application by integration these models with GIS (Geographic Information System, GIS). The research indicates that the urban vehicle emission dispersion was obviously influenced by the road-net and the air pollution in the urban intersection was more serious. In addition, the vehicle emission GIS software could be used to analyze, evaluate and forecast the urban air pollution arising from the vehicle emission.