J4 ›› 2007, Vol. 25 ›› Issue (4): 46-50.

• 论文 • 上一篇    下一篇

一次强飑线天气过程的新一代天气雷达资料分析和临近预报

李 晔1 ,沈晓辉2   

  1. 1.新疆机场集团公司伊宁机场,新疆 伊宁 835000; 2. 新疆伊宁气象局,新疆 伊宁 835000
  • 收稿日期:2007-10-15 修回日期:2007-11-30 出版日期:2007-12-31 发布日期:2007-12-31
  • 作者简介:李晔(1968 - ) ,女,河北唐山人,工程师,现从事民航气象预报工作. E-mail:liye196812@163. com

Analysis of the New Genera tion Weather Radar Data of a Severe Squall Line on 27May 2007 in Yili

L I Ye1 , SHEN Xiaohui2   

  1. 1. Yili A irport, X ingjiang A irport Group, Yining 835000, China; 2. Yining M eteorological B ureau, Yining 835000, China
  • Received:2007-10-15 Revised:2007-11-30 Online:2007-12-31 Published:2007-12-31

摘要:

针对2007年5月27日影响伊犁的锋前强飑线过程,利用常规探空资料和伊犁新一代天气雷达资料,从天气背景、能量转换、水汽供给以及飑线内部对流单体演变特征等进行探讨。结果表明:此次天气过程先后出现2条飑线是天气过程维持较长时间的原因。对流单体在飑线中可发展为成熟的超级单体,可造成局地冰雹;可根据V IL值确定大多数强对流风暴的位置,辨别带有冰雹的强风暴,从而对强对流天气做临近预报。

关键词: 飑线, 冰雹;V IL, 临近预报

Abstract:

Based on the data of new generation weather radar and radiosonde observation in Yili, a severe squall line event ahead of a front occurred in Yili onMay 27, 2007 is analyzed from the synop tic situation, energy field, water vapor content field and evolution of convective cells in the squall line. The results show that two squall lines occurred in this weather eventwhich resulted in the p rocess lasting for a long time. Convective cells can become a mature supercell in the squall line and brings on the local heavy hail. The location ofmost severe storm can be found and the heavy hailstorm can be identified with V IL value, so the nowcasting of severe convective weather can be done.

Key words: squall line, hailstorm, V IL, nowcasting

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