星地闪电资料对山东一次冰雹过程的闪电特征分析  

Analysis of the Lightning Characteristics of a Hail Process in Shandong Province Based on the Data of Satellite and Ground Lightning

作　　者：刘向科 康宁[3] 侯淑梅 支树林[4] 陈乐奇 Liu Xiangke;Kang Ning;Hou Shumei;Zhi Shulin;Chen Leqi(Key Laboratory for Meteorological Disaster Prevention and Mitigation of Shandong Province,Ji’nan 250031,China;Shandong Meteorological Observatory,Ji’nan 250031,China;National Satellite Meteorological Center,Beijing 100081,China;Jiangxi Meteorological Observatory,Nanchang 330096,China)

机构地区：[1]山东省气象防灾减灾重点实验室,济南250031 [2]山东省气象台,济南250031 [3]国家卫星气象中心,北京100081 [4]江西省气象台,南昌330096

出　　处：《气象与环境科学》2023年第1期16-22,共7页Meteorological and Environmental Sciences

基　　金：山东省气象局面上课题(2020sdqxm10)。

摘　　要：利用FY-4A卫星闪电资料(LMI)与山东省地基ADTD雷电探测地闪资料,结合云顶亮温和雷达资料,分析了2018年6月13日冰雹天气的闪电活动特征。闪电资料的分析结果表明:两种闪电资料分析的闪电频数变化趋势基本同步,LMI比ADTD的闪电频数变化更为显著,两者大都集中发生在云顶温度(TBB)≤-50℃的区域内。降雹前,LMI记录的闪电频数会出现峰值,且与ADTD反映的闪电频数比值最大;在雹云发展阶段,闪电频数存在明显的“跃增”,其频数峰值出现在TBB面积最大的时刻。地面降雹前,闪电多发生在强回波前部的弱回波或无回波区附近,可对对流风暴的移动和变化趋势的预报具有较好的指示参考作用。LMI与ADTD反映的闪电频数的变化趋势与强回波的面积变化基本一致,二者具有较明显的正相关性。By using FY-4A satellite lightning data(LMI)and the ground-based ADTD lightning detection data of Shandong Province,combined with cloud top temperature and radar reflectivity,this paper analyzes the lightning activity characteristics of the hail weather on June 13,2018.The analysis results of the two kinds of lightning data show that the variation trends of the two types of lightning are basically synchronous,the LMI flash frequency changes more significantly than the ADTD flash frequency,and both of them are mostly located in the area of TBB≤-50℃.Before the hail falls to the ground,the LMI flash frequency has a peak,and the ratio of the ADTD flash frequency is the largest.During the hail cloud development stage,there is a significant“flash jump”in lightning frequency,and the peak of lightning frequency appears at the moment when the lower TBB area is the largest.Before hail falls to the ground,lightning mostly occurs near the weak echo or non-echo zone in the front of the strong echo,which is a good indication and reference for forecasting the movement and variation trend of convective storms.The change trend of LMI flash frequency is basically the same as the area change of strong echoes,and the two have a good positive correlation.

关 键 词：FY-4A ADTD 地闪 冰雹 TBB面积 

分 类 号：P426.64[天文地球—大气科学及气象学]