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投稿时间:2012-10-18 修订日期:2013-09-29
投稿时间:2012-10-18 修订日期:2013-09-29
中文摘要: 利用2004—2011年29次暴雨过程的多普勒天气雷达资料和常规天气资料,分类总结了河北中南部暴雨的主要雷达径向速度特征。发现形成河北中南部暴雨的主要雷达径向速度特征有5类:β中尺度辐合线、β中尺度辐合、γ中尺度辐合、高空急流和深厚持久的低空急流。深厚持久的低空急流是大范围暴雨的主要速度特征之一。高空急流是大范围暴雨和区域暴雨共有的速度特征。β中尺度辐合线、β中尺度辐合、γ中尺度辐合是大范围暴雨、区域暴雨和局地暴雨共有的速度特征和主要的中小尺度影响系统。列车效应是造成局地暴雨、大暴雨的关键原因。
中文关键词: 暴雨, 多普勒天气雷达, 径向速度特征, 中尺度系统
Abstract:By using the Doppler radar data and the conventional observation of 29 torrential rain processes from 2004 to 2010 the velocity field characteristics in rainstorms in south central Hebei Province are analyzed. It is found that the characteristics can be divided into five categories, including the meso β scale convergence line, the meso β scale convergence, the meso γ scale convergence, the upper level jet and the long lasting and deep low level jet. The last one is one of the main velocity field features of large range severe rainstorms. The upper level jet is the characteristic of both large range heavy rainstorms and regional heavy rainstorms. The meso β scale convergence line, the meso β scale convergence and the meso γ scale convergence are common features and main meso scale systems of all the three types of severe rainstorms. In addition, train effects is a key cause of local severe torrential rains.
keywords: rainstorm, Doppler weather radar, characteristics of radial velocity field, mesoscale system
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基金项目:公益性行业(气象)科研专项(GYHY200906011,GYHY20070604)及国家科技支撑项目(2008BAC37B01)共同资助
作者 | 单位 |
王福侠 | 河北省气象台,石家庄 050021 |
俞小鼎 | 中国气象局培训中心,北京 100081 |
王宗敏 | 河北省气象台,石家庄 050021 |
裴宇杰 | 河北省气象台,石家庄 050021 |
闫雪瑾 | 河北省气象台,石家庄 050021 |
引用文本:
王福侠,俞小鼎,王宗敏,裴宇杰,闫雪瑾,2014.河北暴雨的多普勒天气雷达径向速度特征[J].气象,40(2):206-215.
WANG Fuxia,YU Xiaoding,WANG Zongmin,PEI Yujie,YAN Xuejin,2014.Characteristics of Doppler Rader Velocity Field in Severe Rainstorms in Hebei[J].Meteor Mon,40(2):206-215.
王福侠,俞小鼎,王宗敏,裴宇杰,闫雪瑾,2014.河北暴雨的多普勒天气雷达径向速度特征[J].气象,40(2):206-215.
WANG Fuxia,YU Xiaoding,WANG Zongmin,PEI Yujie,YAN Xuejin,2014.Characteristics of Doppler Rader Velocity Field in Severe Rainstorms in Hebei[J].Meteor Mon,40(2):206-215.