区域资料四维同化试验  

THE EXPERIMENT OF REGIONAL FOUR-DIMEN510NALDATA ASSIMILATION SCHEME

作　　者：朱宗申[1] 马清云[1] 郑国安[1] 

机构地区：[1]国家气象中心

出　　处：《应用气象学报》1995年第1期1-8,共8页Journal of Applied Meteorological Science

基　　金：85-906项目和中国气象局强风暴实验室资助

摘　　要：根据国家气象中心有限区分析预报系统的基本方案，设计一个以６小时为周期的间歇区域资料四维同化方案，对我国的两次暴雨过程进行两种不同粗细水平分辨率的资料四维同化和短期模式预报的试验，结果表明，由同化方案初值获得的短期预报明显好于ＬＡＦＳ方案的预报结果，高分辨率同化方案对预报的改进更明显。A regonal four- dimensional intermittent data assimilation scheme has beendeveloped by using the analysis schem,initialization scheme and rnodel scheme oflimited area analvsis andforecast system(LAFS)in NMC in China. Some forecastexperiments of heavy rains in China in l992 are made by using the assimilation scheme.The experiment results show that the skill of forecast both weather system and rainfallfrorn the assimilation initial values,especially from those of fine-mesh scheme, is muchbetter than the skill of control forecast based on LAFS scberne

关 键 词：细网格 四维同化 暴雨 降水预报 区域数据 

分 类 号：P457.6[天文地球—大气科学及气象学]