| 风暴相对螺旋度与强对流天气类型的关系分析 |
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| 引用本文： | 石燕茹,寿绍文,王丽荣,杨荣珍,赵严厂.风暴相对螺旋度与强对流天气类型的关系分析[J].辽宁气象,2011(1):65-71. |
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| 作者姓名： | 石燕茹 寿绍文 王丽荣 杨荣珍 赵严厂 |
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| 作者单位： | [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 |
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| 基金项目： | 国家自然科学基金（40975013）; 中国气象局预报员专项（CMATG2010Y02）项目; 河北省气象局科研开发项目（08ky17）共同资助 |
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| 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次强对流天气过程的统计分析,找出短时暴雨、冰雹和大风任意组合时高、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低经常连续较长时间为正值,但数值较小,SRH高也是以正值为主;伴有冰雹或者大风时,SRH低、SRH高的差值迅速增大,SRH高可达到100 m^2·s^-2或以上。
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| 关 键 词： | 多普勒雷达 风暴相对螺旋度 强对流天气 |
Relationship between storm relative helicity and types of strong convective weather |
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| SHI Yan-ru,SHOU Shao-wen WANG Li-rong YANG Rong-zhen ZHAO Yan-chang.Relationship between storm relative helicity and types of strong convective weather[J].Liaoning Meteorological Quarterly,2011(1):65-71. |
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| Authors: | SHI Yan-ru SHOU Shao-wen WANG Li-rong YANG Rong-zhen ZHAO Yan-chang |
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| Institution: | 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) |
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| 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 m^2·s^-2. |
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| Keywords: | Doppler radar Storm relative helictiy Strong convection weather |
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