CINRAD/SA雷达风暴趋势产品在冰雹和大风预警中的应用  

Application of CINRAD/SA Storm-Trend Products to Warning of Hail and Violent Winds

作　　者：刁秀广[1] 张新华 朱君鉴[1] 

机构地区：[1]山东省气象台,济南250031 [2]山东省聊城市气象局,聊城252060

出　　处：《气象科技》2009年第2期230-233,共4页Meteorological Science and Technology

基　　金：国家自然科学基金项目(40575012);山东省科技厅项目(2007GG20008001)共同资助

摘　　要：利用济南cINRAD／SA雷达探测资料，对2005-2006年3次发生在山东境内的强天气过程的风暴单体演变趋势进行了分析。结果表明，在地面出现冰雹前，部分强单体具有基于单体的垂直累积液态水含量（C—VIL）和单体强中心高度同步增长现象；在地面出现大风前，部分强单体具有C-VIL和单体强中心高度同步下降现象；同步增长现象的特征表现为强中心高度增加到6km以上，C—VIL至少增加18kg·m^-2，冰雹预测时间提前量在7～20min之间；同步下降现象的特征表现为强中心高度下降2km以上，C—VIL至少减少10kg·m^-2，大风预测时间提前量在0～9min之间。The evolutionary trends of storm cells in three severe weather events occurred in 2005 and 2006 in Shandong Province are analyzed by means of CINRAD/SA data from the Jinan radar station. The results indicate that there appeared synchronous increase in cell-based C-VIL and maximum-reflectivity heights in some severe storm cells before hailing on the ground, with the height being 6 km or higher and C-VIL being over 18 kg/m^2 ; and there appeared synchronous decrease before violent surface wind occurring with the height being 2 km or lower and C-VIL being at least 10 kg/m^2. The lead time of 7 to 20 minutes for hail-warning and that of 0 to 9 minutes for violent surface wind warning are obtained.

关 键 词：CINRAD/SA雷达 风暴趋势 同步变化 冰雹 大风 预警 

分 类 号：P425.47[天文地球—大气科学及气象学] TN959.4[电子电信—信号与信息处理]