摘要
利用位于桂林的新一代天气雷达资料对2005年5月5日影响广西桂林的锋前强飑线过程进行了详细的分析。分析飑线整体演变和内部对流单体演变表明:此飑线为后续线型和断续线型的结合。由镶嵌在飑线中的小尺度超级单体造成对流性大风。对流单体并入飑线前,可发展为成熟的超级单体,有TBSS和BWER等特征,垂直累积液态水含量可达70kg·m-2,造成局地大冰雹。可根据VIL值确定大多数强风暴位置和辨别带有大冰雹的风暴,对强对流天气做临近预报。
Based on the new generation weather radar data in Guilin, a severe squall line event ahead of a front occurred in Guangxi on 5, May 2005 is analyzed to study the evolution of the squall and its convective cell. The results show that this squall line is a combination of follow-up type and consecutive type. The meso-scale convective cell in squall line causes severe convective wind. Before convective cell move into squall line, it can become a mature supercell with TBSS and BWER features. The vertical accumulated liquid water content can get 70kg·m^-2, and produce local great hail. Based on the VIL value, the location of most severe strom can be found and the heavy hailstorm can be identified, the nowcasting of severe convective weather can be made.
出处
《气象》
CSCD
北大核心
2006年第9期60-66,i0003,共8页
Meteorological Monthly
关键词
飑线
大风
冰雹
VIL
临近预报
squall line severe wind hailstorm VIL nowcasting
