| 摘要: |
| 利用常规高空、地面观测资料以及毕节、兴义、贵阳多普勒雷达资料及全省三维闪电定位资料对2018年4月4日贵州境内的一次致灾雹暴进行了分析。结果发现：除较大的CAPE值，明显的垂直风切变外，中高层的干冷空气的侵入增加了强冰雹的可能性；多普勒雷达回波低层PPI上有明显的V型缺口显现，在降雹前最大回波强度及回波顶高分别达到了60 dBz及-20 ℃层以上，垂直液态水含量VIL与垂直液态水含量密度VILD均对冰雹预警具有指导意义，VILD对大冰雹的指示更为有效；闪电频次每5 min变化、正闪比率对应降雹过程呈现较为规律的变化，伴随降水的降雹过程闪电活动更为频繁。 |
| 关键词: 冰雹；大气垂直结构；垂直液态水含量；正闪 |
| DOI： |
| 投稿时间：2019-05-18 |
| 基金项目:贵州省科学技术基金项目（黔科合支撑[2019]2387）：雹胚形成演变微物理环境条件观测与模拟试验研究；贵州省气象局科研业务项目(黔气科登[2018]08-10号)：贵州中西部地区冰雹天气过程闪电活动特征及其对降雹指示作用研究；贵州省人工影响天气办公室自立科研业务项目（GZRY201830）：贵州中西部地区冰雹云形成发展与闪电演变特征 |
|
| Application analysis of atmospheric vertical structure, lightning activity and radar echo characteristics in a disaster-causing hailstorm |
| HUANG Yu,LI Hao,CAO Shui |
| (Guizhou Hail Prevention and Control Technology Engineering Center, Guiyang 550081 , China ;Meteorological Disaster Defense Technology Center of Guizhou Province, Guiyang 550081 , China;Weather Modification Office of Guizhou Province, Guiyang 550081 , China) |
| Abstract: |
| The conventional high, ground observation data and Doppler radar data of Bijie, Xingyi, Guiyang and the three-dimensional lightning location data in Guizhou province were used to analyze a disaster-causing hail storm in Guizhou on April 4, 2018. It was found that，except the larger CAPE value and the obvious vertical wind shear, the intrusion of dry and cold air in the middle and upper layers increased the possibility of strong hail;There is a obvious V-notch on the low-level PPI of Doppler radar echo. The maximum echo intensity and echo top height before the hail reaches 60 dBz and above -20 ℃. Both Vertical liquid water content(VIL )and vertical liquid water content density (VILD)have guiding significance for hail warning,VILD may be more effective for large hail;The lightning frequency changes every 5 minutes and the positive flash ratio corresponds to a regular change in the hail process, the lightning activity is more active with the precipitation. |
| Key words: hailstorm； atmospheric vertical structure； vertical liquid water content；positive flash |
