中国北方沙尘传输的数值模拟  

Numerical Simulation of Sand-dust Transmission in North China

作　　者：王雁鹏[1] 陈岩[1] 殷惠民[1] 李玉武[1] 

机构地区：[1]国家环境分析测试中心,北京100029

出　　处：《干旱气象》2007年第3期1-9,共9页Journal of Arid Meteorology

基　　金：国家环境保护总局科技发展计划项目(2002-Z-07)资助

摘　　要：利用PSU/NCAR的非静力中尺度气象预报模式MM5和三维欧拉型区域空气质量模式CAMx建起一套完整的空气质量模拟系统,对2001年春季北方地区的沙尘传输的数值模拟结果表明,该模式对沙尘传输和沙尘浓度分布有较好的模拟能力,TSP模拟值与激光雷达监测结果具有显著的相关性,置信度水平〉99%。蒙古国和内蒙古自治区对北京的贡献率分别为30%-50%和30%-60%,河北省的贡献率最高可达29%。Based on the fifth generation PSU/NCAR＇s non-hydrostatic mesoscale model（MM5） and comprehensive air quality model with extensions（CAMx,a 3-D Eulerian regional air quality model） a air quality simulation system has been completed,which is applied to simulate sandstorm transmission affecting Beijing in North China in spring 2001.The results show the system is capable for simulating and predicting sandstorm transmission and concentration distribution in North China.Significant correlation was found between simulation value of TSP and Lidar observation,which confidence level was above 99%.The contribution rate of Mongolia,Inner Mongolia and Hebei to dust concentration in Beijing are 30%-50%,30%-60% and under 29%,respectively.

关 键 词：沙尘暴 传输模式 数值模拟 

分 类 号：P456.7[天文地球—大气科学及气象学]