| 摘要: |
| 利用NCEP/NCAR再分析资料、高空探测资料、昭通多普勒天气雷达资料对2018年8月20日彝良县发生的冰雹灾害进行诊断分析，结果表明：①此次冰雹天气是一次多单体风暴造成的局地性强对流天气；②探空图上出现逆温层、喇叭口和垂直风切变等特征；③雷达回波表现出假尖顶回波、弱回波区等特征；④降雹前后垂直累积液态含水量（VIL）出现了跃增和陡降的现象；⑤防雹作业对对流风暴发展有抑制减弱效果，抓住合理的作业时机是取得防雹成败的关键。 |
| 关键词: 冰雹；多单体风暴；中尺度带通滤波；雷达回波；防雹作业 |
| DOI： |
| 投稿时间：2019-01-22 |
| 基金项目: |
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| A diagnostic analysis on multi-cell storm hail disaster in Zhaotong City |
| QIN Rui,ZENG Qingchuan,ZHANG Faping |
| (Meteorological Bureau of Zhaotong City, Yunnan Province, Zhaotong 657000 ,China;Meteorological Bureau of Yiliang County,Yunnan Province, Yiliang 657600 ,China) |
| Abstract: |
| Based on NCEP/NCAR reanalysis data, aerial exploration data, and Doppler radar data of Zhaotong, the hail disaster in Yiliang on August 20,2018 was analysed. The results indicate that: ①This hail weather was a local server convection weather caused by multi-cell storm. ②The sounding map revealed features such as inversion layer, horn shape and vertical wind shear. ③Radar echo characteristics show features such as false apex echo and weak echo region. ④ Vertically integrated liquid water content(VIL) before and after hail has jumped and steeped. ⑤Hail suppression has a weakening effect on the development of convective storm. However, grasping reasonable working time is the key to the success of hail prevention. |
| Key words: hail； multi-cell storm； mesoscale bandpass filter； radar echo； hail suppression |
