J4 ›› 2007, Vol. 25 ›› Issue (3): 44-47.

• 论文 • 上一篇    下一篇

局地雹暴环境气流的演变特征

张久林1 ,李维红2 ,章克俭2   

  1. 1. 甘肃省人工影响天气办公室,甘肃 兰州 730020; 2. 甘肃省气象科技服务中心,甘肃 兰州 730020
  • 收稿日期:2007-08-24 修回日期:2007-09-04 出版日期:2007-09-30 发布日期:2007-09-30
  • 作者简介:张久林(1964 - ) ,男,河北献县人,工程师,现从事人工影响天气工作.
  • 基金资助:

    国家自然基金重点项目“西北地形云结构及降水机理研究”(40533015) 、中国气象局“西北地区人工防雹消雹技术的推广应用”(CMATG2007Z08)共同资助

Evolution Characterictic of A irflow for Local Thunderstorm

ZHANG J iulin1 , L IWeihong2 , ZHANG KeJ ian2   

  1. 1. Gansu W eatherM odif ication Off ice, Lanzhou 730020, China; 2. Gansu Service Center of  Meteorological Science and Technology , Lanzhou 730020, China
  • Received:2007-08-24 Revised:2007-09-04 Online:2007-09-30 Published:2007-09-30

摘要:

通过甘肃永登、岷县防雹试验基地1979~1987年获取的1 d 4次无线电探空资料,对照地面实况,对强冰雹、弱冰雹、雷雨、阵雨、阴天、晴天6类天气的高空风进行分析研究,发现强雹暴在降雹前期低空风向切变、中空风速切变、高空急流等与其它类型天气比较具有显著的差异,这对于预报雹暴天气和雹暴形成机制的研究具有指示意义。

关键词: 雹暴, 环境气流, 演变

Abstract:

Based on aerological observations at the hail supp ression experimental stations of Yongdeng andMinxian counties of Gansu Province during 1979 - 1987, as well as surface meteorological observations at the same time, the upperwinds under the six different weather conditions of strong hailstorm, weak hailstorm, thunderstorm, shower, overcast and sunshine were analyzed. Results show that significant defference p rezented in low airwind direction shear, middle airwind velocity shear and jet in upper air before haill falling under the strong hailstorm weather condition compared with those of otherweather conditions, which is useful to forecast hailstorm and study its formation mechanism.

Key words: hailstorm, environment flow, evolution

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