[1]张晓辉,尤国军,易永力,等.河北承德地区冰雹天气雷达预警指标分析[J].黑龙江农业科学,2018,(07):19-22.[doi:10.11942/j.issn1002-2767.2018.07.0019]
　ZHANG Xiao-hui,YOU Guo-jun,YI Yong-li,et al.Radar Warning Index Analysis of Severe Hail in Chengde of Hebei Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(07):19-22.[doi:10.11942/j.issn1002-2767.2018.07.0019]
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河北承德地区冰雹天气雷达预警指标分析

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2018年07期 页码: 19-22 栏目: 出版日期: 2018-07-10
Title:
Radar Warning Index Analysis of Severe Hail in Chengde of Hebei Province
作者:
张晓辉; 尤国军; 易永力; 谭国明; 周士茹
承德市气象局， 河北 承德 067000
Author(s):
ZHANG Xiao-hui; YOU Guo-jun; YI Yong-li; TAN Guo-ming; ZHOU Shi-ru
Chengde Meteorological Service,Chengde 067000，China
关键词:
冰雹; 雷达; 预警指标; 承德
Keywords:
hail;  radar; warning index; Chengde
DOI:
10.11942/j.issn1002-2767.2018.07.0019
文献标志码:
A
摘要:
为提高承德地区冰雹临时预报的准确性，利用2012-2016年河北承德地区常规观测资料、C波段多普勒雷达基数据资料，采用雷达基数据反演及统计方法，对承德地区冰雹天气雷达预警指标进行了研究。结果表明：承德地区冰雹预警的定量指标有最大回波强度超过58 dBz、回波顶高超过7 km、垂直液态累计含水量超过33 kg?m-2，并且两个相邻体扫跃增值在20~33 kg?m-2；承德地区冰雹预警的定性判断的依据有冰雹回波的形状主要分为块状或带状两种，径向速度图上，出现逆风区、大风区、中尺度辐合以及径向速度模糊，基本反射率因子图上，出现三体散射回波、强回波远离雷达一侧出现的V型缺口；V型缺口对冰雹预警的时间提前量为7~21 min。
Abstract:
By using the conventional observations,C band Doppler radar base data,based on radar based data inversion method and statistic method，the radar warning indicators for hail weather in Chengde area,Hebei province form 2012 to 2016 were researched to improve the accuracy of the hail forecast in Chengde area.The results showed as following.The quantitative indicators of hail warning in Chengde area,maximum echo intensity exceeded 58 dBz,echo top height exceeded 7 km,vertical liquid cumulative moisture content exceeded 33 kg?m-2,and two adjacent body sweep values increased between 20 and 33 kg?m-2.The basis for the qualitative judgment of hail warning was the shape of the hail echo and was mainly divided into two types: block or band.On the radial velocity map,the upwind region,the strong wind region,the mesoscale convergence,and the radial velocity were fuzzy.On the reflectance factor map,a three-body scattering echo appears,and a strong echo appears far from the ‘V’ notch gap on the side of the radar.The hail warning for ‘V’ notch was 7 to 21 minutes early.

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备注/Memo

收稿日期：2018-03-03第一作者简介：张晓辉（1987-），男，学士，助理工程师，从事专业气象服务研究。E-mail：945302079@qq.com。通讯作者：谭国明（1979-），男，学士，副高级工程师，从事专业气象服务研究。E-mail：93965366@qq.com。

更新日期/Last Update: 2018-09-13