雷达定量测量降雨在洪水预报中的应用  

Application of quantitative precipitation estimation by radar to flood forecast

作　　者：宋星原[1] 李允军[1] 余海燕[1] 张利平[1] 

机构地区：[1]武汉大学水资源与水电工程国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2007年第2期51-54,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:50379040);国家自然科学基金项目(编号:40675070);科技部公益研究项目(编号:2005DBI3J101)

摘　　要：应用雷达的基数据资料,提取雷达反射率,利用分组Z—I关系转化雷达反射率为雨强,运用地面雨量站网实测雨量对其进行卡尔曼滤波校准,将其结果作为洪水预报模型的降雨输入,并将该方法应用于湖北省白莲河流域.Radar can probe the real-time cloud and precipitation structures and the development of the system; and it can provide the real-time precipitation in certain district quickly. This paper gets the radar reflectivity from the radar basic data, uses the optimized grouping relationship of Z and I to transform the radar reflectivity to precipitation. And then, adopting the data from the network of rain gauges, Kalman filtering method is used to adjust the precipitation, which is used as the precipitation input of Xin＇anjiang model. This method is applied to Bailian River basin in Hubei Province.

关 键 词：雷达定量测量降雨 分组Z—I关系 卡尔曼滤波 洪水预报 

分 类 号：TV124[水利工程—水文学及水资源]