冰雹指数产品剖析及在灾害性强降水预报中的应用  

Analysis of Hail Index and Its Application to Nowcasting of Rainstorm

作　　者：邵玲玲[1] 黄宁立[1] 王倩怡[2] 江旭东[1] 邱黎华[1] 

机构地区：[1]上海中心气象台,上海200030 [2]南京大学大气科学系

出　　处：《气象》2006年第11期48-54,I0001,共8页Meteorological Monthly

摘　　要：深入研究了新一代天气雷达产品———冰雹指数的算法HDA,并分析讨论了算法的早期版本(7.0)和改进版本(10.0)的设计思路和优缺点,指出冰雹探测算法的思路与预报局地暴雨的思路相似,都是建立在对风暴单体中高反射率因子探测的基础上。据此,首次提出根据不同季节,利用冰雹指数预报灾害性强降水(冰雹和局地暴雨)的设想。通过对大量强降水个例中冰雹指数HI、垂直液态水含量VIL等雷达产品的统计分析和研究,总结了利用冰雹指数预报上海地区灾害性强降水的一些基本方法和算法阈值设置,以期为预报业务部门更好地使用新一代天气雷达导出产品提供一些参考信息。The hail detection algorithm （HDA） of the CINRAD is investigated, and design features of algorithm in early （7.0） and advanced editions （10.0） are analyzed. The results show that the thinking of HDA is analogous with that of nowcasting of the rainstorm, and both of them are based on the detection of high reflectivity factor in storm cells. The tentative plan of nowcasting disastrous precipitation （hail and local rainstorm） is first put forward using the hail index （HI） on the basis of different seasons. By means of statistical analysis and research of HI and VIL etc radar products, some basic methods and establishment of algorithm threshold on forecasting disastrous precipitation are summarized in a number of cases, and so as to provide referential messages for forecasters to use the products of the CINRAD.

关 键 词：多普勒雷达 冰雹指数 算法 灾害性强降水 

分 类 号：P457.6[天文地球—大气科学及气象学]