MM5V3对东亚区域大气环流模拟能力的检测  

Testing the Ability of MM5V3 to Simulate Atmosphere Circulation in East Asia

作　　者：赵得明[1] 符淙斌[1] 苏炳凯[2] 

机构地区：[1]中国科学院大气物理研究所东亚区域气候-环境重点实验室,北京100029 [2]南京大学大气科学系,南京210093

出　　处：《气候与环境研究》2008年第1期1-9,共9页Climatic and Environmental Research

基　　金：国家重点基础研究发展规划项目2006CB400500;中国博士后科学基金资助项目20060400492

摘　　要：为了检验参加亚洲区域气候模式国际比较计划（RMIP）的数值模式MM5V3模拟气候及其变化的能力，对利用该模式完成的东亚区域（包括大部分亚洲大陆、西太平洋、孟加拉湾和南海地区）1989～1998年10年模拟试验积分结果，用奇异值分解（SVD）分析了模式模拟和观测（NCEP／NCAR再分析资料）的500hPa月平均高度场之间的关系，得到检验数值模式模拟气候及其变化能力的两种有效指标：模态相关系数和异性相关系数。对500hPa月平均高度场及其距平场和冬、夏季的月平均高度距平场进行SVD分析，由North检验显著的前两对模态都有很高的模态相关系数和异性相关系数分布。结果表明：MM5V3对500hPa月平均高度场气候态及其异常变化有一定的模拟能力，模拟的冬季比模拟的夏季情况要更好。In order to test the ability of numerical model （MM5V3） to simulate climate and its change in Regional Climate Model Inter-comparison Project for East Asia （RMIP）, SVD （Singular Value Decomposition） technique is adopted to express the relationship of 500 hPa geopotential height fields between observed values （NCEP/NCAR reanalysis data） and simulated results using MM5V3 in East Asia （including majority of Asia land, west Pacific, Bengal bay and South China Sea） from 1989 to 1998. Two effeetive indices, mode correlation coefficient and heterogeneous correlation coefficient, are accepted to test the ability of numerical model to simulate climate and its change. Monthly mean geopotential height fields and monthly mean geopotential height anomaly fields for 120 months, monthly mean anomaly geopotential height fields in winter and summer are analyzed respectively. North test shows that the two leading modes have the remarkable mode correlation coefficient and heterogeneous correlation coefficient. The comparisons show that MM5V3 can simulate 500 hPa geopotential height field and its anomaly field well in a certain degree, and the simulation in winter is much more satisfactory than that in summer.

关 键 词：奇异值分解 模拟能力 模态相关系数 异类相关系数 

分 类 号：P435[天文地球—大气科学及气象学]