变分法和卫星云图模式识别在强降水面雨量预报中的应用  

Application of Variation Method and Pattern Recognition ofSatellite Image to Forecasting of Heavy Area Rainfall overthe Upper Reaches of Changjiang River

作　　者：王登炎[1] 李德俊[1] 金琪[1] 

机构地区：[1]武汉中心气象台,430074

出　　处：《气象》2003年第3期20-22,37,共4页Meteorological Monthly

基　　金：中国气象局三峡气象保障服务项目资助

摘　　要：假设数值预报对雨量的落区预报是准确的 ,用卫星云图模式识别预报的流域雨量极值 ,应用变分法对数值预报雨量极值进行订正 ,使得订正预报与未订正场之间的泛函达最小 ,从而求得预报场。试验证明 。Under the condition of assumption that it is correct of area rainfall forecasting of NWP, pattern recognition method of satellite image is used to forecast maximum heavy rainfall and correct maximum rain of MAPS. Variation method has been used to get minimum of objective function between correct field and incorrect field. The forecast tests showed that the methods have advanced accuracy of heavy area rainfall forecasting.

关 键 词：卫星云图 模式识别 变分法 强降水面雨量预报 数值预报 

分 类 号：P457.6[天文地球—大气科学及气象学] P456.7