CAJ | 학술논문

利用湖北省闪电定位系统监测资料与武汉市多普勒天气雷达资料同步叠加，对2010年4月12日湖北省东南部地区一次强对流过程的两个致灾雹暴单体进行分析。结果表明：雹暴生消的不同阶段，正地闪和负地闪频数及在雷达回波中的分布呈不同的变化特征，通过地闪频次和地闪在雷达回波中位置的变化可以识别雹暴生命史演变的不同阶段。雹暴Ⅰ产生小冰雹，是一个普通对流单体，闪电以负地闪为主，闪电频率最大为15次·（6 min）－1；正地闪落在风暴发展和消亡阶段，负地闪主要落在35—55 dBz强回波边缘，零星正地闪分布在强回波周围层状云中，雹暴移动路径前侧的负地闪对雹暴移动有一定的指示意义。雹暴Ⅱ是一个典型超级单体，产生直径超过3 cm的大冰雹，闪电频率最大为44次·（6 min）－1，风暴成熟阶段正地闪活跃，16—17时正地闪频繁出现时间与大冰雹持续时间一致；负地闪与25—55 dBz强回波区域吻合较好，正地闪分布在强回波30—55 dBz中心及层状云边缘。对比地闪频数和雹暴成熟阶段的回波强度可以发现，降雹均出现在风暴的成熟阶段，小冰雹发生时地闪频数下降幅度较小，大冰雹发生时地闪频数下降幅度较大，且正地闪比例明显增大。
이용호북성섬전정위계통감측자료여무한시다보륵천기뢰체자료동보첩가，대2010년4월12일호북성동남부지구일차강대류과정적량개치재박폭단체진행분석。결과표명：박폭생소적불동계단，정지섬화부지섬빈수급재뢰체회파중적분포정불동적변화특정，통과지섬빈차화지섬재뢰체회파중위치적변화가이식별박폭생명사연변적불동계단。박폭Ⅰ산생소빙박，시일개보통대류단체，섬전이부지섬위주，섬전빈솔최대위15차·（6 min）－1；정지섬락재풍폭발전화소망계단，부지섬주요락재35—55 dBz강회파변연，령성정지섬분포재강회파주위층상운중，박폭이동로경전측적부지섬대박폭이동유일정적지시의의。박폭Ⅱ시일개전형초급단체，산생직경초과3 cm적대빙박，섬전빈솔최대위44차·（6 min）－1，풍폭성숙계단정지섬활약，16—17시정지섬빈번출현시간여대빙박지속시간일치；부지섬여25—55 dBz강회파구역문합교호，정지섬분포재강회파30—55 dBz중심급층상운변연。대비지섬빈수화박폭성숙계단적회파강도가이발현，강박균출현재풍폭적성숙계단，소빙박발생시지섬빈수하강폭도교소，대빙박발생시지섬빈수하강폭도교대，차정지섬비례명현증대。
Based on lightning monitoring data in Hubei province and Doppler radar data in Wuhan,two disaster-in-ducing hailstorm cells of a strong convection process on April 12,2010 in the southeast of Hubei province were an-alyzed.The results show that the cloud-to-ground (CG)lightning and radar echo characteristics of two strong hail-storm cells are different in each stage of life history,and hailstorm evolution stages could be identified by the CG lightning frequency and the position of CG lightning in radar echo chart.The hailstormⅠ is a strong cell which produces small hail.The CG lightning is mainly negative and its maximum frequency reaches 15 every six mi-nutes.The positive CG lightning usually occurs in the development and disappear stages of hailstorm,while the negative is in the edge of 35-55 dBz strong echo.The scattered positive CG lightning is in the stratiform cloud a-round strong echo.The negative CG lightning in the front of hailstorm moving path is indicative to hailstorm movement.On the other hand,the hailstormⅡis a typical supercell which could produce large hail with the diame-ter more than 3 cm.The maximum frequency of CG lightning is 44 every six minutes.The positive CG lighting is active during mature stage of hailstorm,and its maximum frequency occurs from 16:00 to 17:00 which is consist-ent with duration time of large hail.The negative CG lightning strikes mainly concentrate in the 25-55 dBz strong radar echo area,while the positive occurs in the core of 30-55 dBz strong echoes and at the edge of stratiform cloud.Comparison of CG lightning frequency and echo intensity during mature stage of hailstorm suggests that all hails occur during mature stage of hailstorm.The decreasing amplitude of CG lightning frequency is lower when the small hail occurs,while that is higher when the large hail occurs and the positive CG lightning percentage in-creases significantly.