临安地区地面SO_2变化规律及其源地分析  

ANALYSIS OF THE SOURCE REGION AND VARIATION OF SURFACE SO 2 AT LIN'AN STATION

作　　者：颜鹏[1] 房秀梅[1] 李兴生[1] 

机构地区：[1]中国气象科学研究院

出　　处：《应用气象学报》1999年第3期267-275,共9页Journal of Applied Meteorological Science

基　　金：国家自然科学基金

摘　　要：利用后向轨迹的簇分析方法，研究了１９９４年９、１０月份不同流场条件时，临安地面ＳＯ２的变化规律．采用Ｌａｇｒａｎｇｉａｎ传输、扩散、沉降模式计算了中国大陆以及东部较发达的几个区域对临安地面ＳＯ２的贡献．与实际观测资料对比表明，模式能够较好地模拟出临安地面ＳＯ２的浓度量级和变化趋势．同时，模式结果也表明，作为区域污染背景监测站，临安站观测的ＳＯ２浓度大小及变化趋势能反映中国东部发达地区ＳＯ２的浓度水平．Backward trajectory cluster analysis is used to determine the source regions and variation of surface SO 2 at Lin'an regional background station under different weather conditions in Sep. and Oct. 1994. Furthermore, by using Lagrangian transport, dispersion and deposition model, the contributions from different areas to surface SO 2 concentrations at Lin'an station are calculated. In comparison with the observations, it is shown that the model could be well to simulate the variations of surface SO 2 at Lin'an. Meanwhile, it is also shown that the concentrations and variations of surface SO 2 observed at Lin'an station could reflect those of eastern China.

关 键 词：扩散模式 临安地区 二氧化硫 变化规律 空气污染 

分 类 号：X511[环境科学与工程—环境工程] X16