鲁西北地区一次秋季强对流天气的雷达识别分析  

Radar identification anlysis of a severe autumn convective weather in Northwest Shandong

作　　者：刘昭武 郝茂生 龚佃利[2] Liu Zhaowu;Hao Maosheng;Gong Tianli(Binzhou Municipal Meteorological Service,Binzhou Shandong 256612;Weather Modification Office of Shandong Provincial People's Government,Jinan Shandong)

机构地区：[1]滨州市气象局,山东滨州256612 [2]山东省人民政府人工影响天气办公室,济南271001

出　　处：《气象研究与应用》2020年第1期79-83,共5页Journal of Meteorological Research and Application

基　　金：国家重点研发计划(2018YFC150790X)项目。

摘　　要：利用SA雷达探测和高空探空资料,结合防雹作业数据和灾情信息,对2016年9月11日发生在鲁西北地区的强对流天气过程中两个对流单体进行雷达识别分析。结果表明:两个对流单体发展迅速,在4-7个体扫(约25-45min)内,垂直液态水含量(VIL)分别跃增了27kg·m^-2、16kg·m^-2,达到64kg·m^-2、57kg·m^-2;在反射率因子图上都具有典型的冰雹回波特征:存在较明显的强回波墙、回波穹窿、有界弱回波区;实施防雹作业后,对流单体回波顶高、VIL、风暴质心高度、冰雹概率、强冰雹概率等指标持续下降,进一步证实了开展防雹作业可有效地减小降雹灾害。Based on the SA radar detection and high-altitude sounding data, combined with hail suppression data and disaster information, two convective cells during the severe convective weather in northwest Shandong on September 11 th, 2016 were recognized and analyzed. The results showed that the vertically integrated liquid water(VIL) of 4 to 7 scanningvolumes(about 25-45 minutes)increased by 27 kg·m^-2, 16 kg·m^-2,up to 64 kg·m^-2, 57 kg·m^-2, respectively. On the reflectivity factor map, there are typical characteristics of hail echo: which are obvious strong echo wall, echo vault and bounded weak echo area. After the implementation of hail suppression operation, the echo peak height, VIL, storm center of mass height, hail probability, hail probability and other indexes of convection cell continued to decrease, which further proved that our operation could effectively reduce the hail disaster.

关 键 词：秋季强对流 雷达识别 防雹效果 

分 类 号：P412.25[天文地球—大气科学及气象学]