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当前位置: 首页 > 文章 > 石阡县冰雹大风天气雷达产品特征分析 现代农业科技 2019 (4) 182-184
Position: Home > Articles > Feature Analysis of Radar Product of Hail Windy Weather in Shiqian County Modern Agricultural Science and Technology 2019 (4) 182-184

石阡县冰雹大风天气雷达产品特征分析

作  者：
鲁颖;陈军;杨群;陈关清;黎荣;张逸
单  位：
贵州省铜仁市气象局
关键词：
冰雹;多普勒雷达;弓形回波;贵州石阡
摘  要：
利用铜仁新一代天气雷达产品资料、实况观测资料以及NCEP(1°×1°)资料等,分析了贵州省铜仁市石阡县2015年5月8日的一次冰雹大风过程。结果表明,2015年5月8日石阡县冰雹大风天气是发生在高空低槽、低层切变线、低空西南急流和地面辐合线的环流背景下,下湿上干的形势和中等强度的垂直风切变为强对流天气发生提供了有利条件。雷达回波反射率因子显示为明显的弓形回波,且回波强度超过55 d BZ,强回波区伸展高度达-20℃层以上,冰雹、大风天气产生在回波最强的弓形顶部;同时具有有界弱回波区、旁瓣回波、悬垂回波、回波墙、深厚的强中气旋和逆风区等冰雹天气典型雷达回波特征。降雹过程有垂直积分液态含水量的骤增骤降现象。
译  名：
Feature Analysis of Radar Product of Hail Windy Weather in Shiqian County
作  者：
LU Ying;CHEN Jun;YANG Qun;CHEN Guan-qing;LI Rong;ZAHNG Yi;Tongren Meteorological Bureau of Guizhou Province;
单  位：
LU Ying%CHEN Jun%YANG Qun%CHEN Guan-qing%LI Rong%ZAHNG Yi%Tongren Meteorological Bureau of Guizhou Province
关键词：
hail;;Doppler radar;;bow-echo;;Shiqian Guizhou
摘  要：
Based on Tongren′s new generation weather radar product data,live observation data and NCEP(1°×1°)data,a hailstorm process was observed on May 8,2015 in Shiqian County,Tongren City,Guizhou Province. The results showed that the hailstorm weather in Shiqian County on May8,2015 was in the background of high-altitude low trough,low-level shear line,low-altitude southwest jet and ground convergence line. High humidity in lower layer,low humidity in high layer,and the medium-intensity vertical wind shear provided favorable conditions for weather occurrence. The radar echo reflectivity factor was shown as a distinct bow-echo,and the echo intensity exceeded 55 d BZ. The strong echo region extended above the-20 ℃layer. The hail and windy weather were generated at the top of the arc with the strongest echo. At the same time,it had the characteristics of typical radar echoes such as bounded weak echo region,sidelobe echo,overhang echo,echo wall,deep strong cyclone and upwind zone. The hail process had a sudden increase and decrease in the vertical integral liquid water content.

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