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With the acceleration of urbanization process and the growth of motor vehicles in China, transportation, environment and energy issues have become important issues of urban development, and developing rail transportation is one of the main ways to solve the urban problems. This paper analyses China's basic urban rail transit situation, the supply and demand of urban rail transit and the choice of...
The characteristics of spatio-temporal distribution of tropospheric NO2 vertical column density (VCD) over Yangtze Delta(YD) are presented, on the basis of measurements from the satellite instruments Ozone Monitoring Instrument(OMI). From these observations, monthly and yearly averaged tropospheric NO2 variations are determined for the period of 2005-2009. A linear regressed model is used to fit the...
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