主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

气象与环境学报 ›› 2011, Vol. 27 ›› Issue (1): 65-71.doi:

• 快报 • 上一篇    

风暴相对螺旋度与强对流天气类型的关系分析

石燕茹1,2  寿绍文1 王丽荣3  杨荣珍3  赵严厂3    

  1. 1.南京信息工程大学,江苏 南京 210044; 2.河北省气象局,河北 石家庄 050021;3.石家庄市气象局, 河北 石家庄 050021
  • 收稿日期:2010-09-09 修回日期:2010-12-02 出版日期:2011-02-28 发布日期:2011-02-28

Relationship between storm relative helicity and types of strong convective weather

SHI Yan-ru1,2 SHOU  Shao-Wen1 WANG Li-rong3 YANG Rong-zhen3  ZHAO Yan-chang   

  1. 1. Nanjing University of Information Science and Technology, Nanjing 210044, China; 2. Hebei Provincial Meteorological Bureau, Shijiazhuang 050021, China; 3. Shijiazhuang Meteorological Bureau, Shijiazhuang 050021, China
  • Received:2010-09-09 Revised:2010-12-02 Online:2011-02-28 Published:2011-02-28

摘要: 对风暴相对螺旋度(SRH)的定义进行了介绍。通过对2007—2008年石家庄地区27次强对流天气过程进行了统计分析,找出短时暴雨、冰雹、大风任意组合时高、低层SRH的不同特征,得到不同天气现象的预报指标,并利用2009年的几次强对流天气过程进行了验证。结果表明:出现短时暴雨时,SRH经常连续较长时间为正值,但数值较小,SRH也是以正值为主;伴有冰雹或者大风时,SRHSRH的差值迅速增大,SRH可达到100m2•s-2或以上。

关键词: 多普勒雷达, 风暴相对螺旋度, 强对流天气

Abstract: The definition of storm relative helicity (SRH) was introduced. 27 strong convective weather events from 2007 to 2008 were analyzed in Shijiazhuang, Hebei province. The characteristics of SRH in high and low levels were summarized in any combination ways of short time heavy rain, hailstone and gale weather. The results indicate that SRH value in low level is often positive but small under short time heavy rain weather condition. The SRH in high level is mainly positive as well. The difference of SRH between in high and low levels will increase rapidly under hailstone or gale weather condition. The maximum of SRH in high level exceeds 100 m2•s-2.

Key words: Doppler radar, Storm relative helictiy, Strong convection weather

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