中文摘要：

利用美国环保局开发的新一代空气质量模式系统Models-3，对2002年冬季采暖期间沈阳市大气污染物的输送与化学转化进行了数值模拟研究，并对SO2、NO2和PM10等大气污染物浓度的模拟结果与监测结果进行了对比分析．结果表明，Models-3模式系统能较好地模拟出沈阳市的大气污染物输送与化学转化情况，SO2、NO2和PM10的模拟值与观测值的变化趋势具有较好的一致性，说明该模式能较好地反映这些大气污染物的分布特征和变化规律，可为今后深入开展沈阳市大气污染数值预报与传输扩散研究提供有效的手段．

英文摘要：

The transport and chemical conversion of atmospheric pollutants are simulated using new generation air quality models system Models-3 developed by Environmental Protection Agency in heating duration of Shenyang in 2002, and the results of simulated NO2 , SO2 and PMl0 concentrations and the observed ones are analyzed. The results display that the model can simulate the transport and chemical conversion of atmospheric pollutants better and variation features of the simulated and observed values are more identical. The results also shows that the model is able to simulate the spatial distribution and variation features of atmospheric pollutants better, which provides a useful tool for further developing numerical forecast and studying transport diffusion of atmospheric pollutants in Shenyang.