J4 ›› 2009, Vol. 27 ›› Issue (4): 320-326.

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Radar Data Analysis of a Supercell Storm

 LIU Wei-Cheng1, YANG Xiao-Jun1, SHI Zhi-Juan2, LI Yi-Beng3, ZHANG Yu-Fei1   

  1. (1. LanzhouMeteorologicalObservatoryCenter, Lanzhou730020, China;2. Gansu ProvincialMeteorologicalBureau,
    Lanzhou730020,China;3. Institute ofAridMeteorology, ChinaMeteorologicalAdministration, Lanzhou730020,China)
  • Received:2009-06-29 Revised:2009-10-30 Online:2010-12-30 Published:2009-12-30

一次超级单体风暴的雷达回波特征分析

刘维成杨晓军史志娟李忆平张宇飞   

  1. (1.兰州中心气象台,甘肃 兰州 730020; 2.甘肃省气象局,甘肃 兰州 730020;3.中国气象局兰州干旱气象研究所,甘肃 兰州 730020)
  • 作者简介:刘维成(1984-),男,汉族,甘肃镇原人,助理工程师,主要从事雷达探测及资料研究工作.E-mail:plareny@163.com
  • 基金资助:

    甘肃省气象局科技重点项目(2009-4)资助
     

Abstract:

This paper analyzed the continuous detecting data ofLanzhou CINRAD /CC Radar abouta hailprocess occurred in Dingxi on July 18, 2008, summarized themain characteristics of the radarproducts during this hailprocess such as reflectivity, radial velocity,RCS vertical section, vertical integrated liquid content and so on. Then it discussed the detection methods for monitoring hail by DopplerRadar, found out the typical echo characteristic of supercell storms such as hook echo, bounded weak echo region(BWER),echowal,l suspended echo, obvious influx nick, existingmesocyclone etc., and summed up some informationwhich are good fornowcasting ofhai,l such as severe change ofVIL, corresponding relationship ofET and hailprocess, obvious three-body scatter characteristic and so on, these information will be of great value for us to detect severeweather events by radar.

Key words: new generation weather radar, supercel, l hai, l mesocyclone, radar echo characteristics

摘要:

 利用兰州CINRAD /CC雷达对2008年7月18日甘肃省定西市境内的降雹过程连续观测,对探测到的资料进行分析,总结出此次降雹过程的反射率因子、径向速度、RCS垂直剖面、垂直累积液态含水量等产品的主要特征,初步探讨了使用多普勒雷达监测冰雹的方法,找出了超级单体风暴呈现出的钩状弓状回波、有界弱回波区、回波墙、悬挂回波、明显的入流缺口、存在中气旋等典型的回波特征,归纳出VIL剧烈变化、ET与冰雹过程的一致对应关系、明显的三体散射特征等一些对冰雹的临近预报有指导意义的信息,为使用天气雷达探测此类灾害性天气提供了参考。

关键词: 新一代天气雷达, 超级单体, 冰雹, 中气旋, 回波特征

CLC Number: