“6·25”冰雹环境条件及物理量诊断分析  

Diagnostic Analysis of Environmental Conditions and Physical Quantities of"6·25"Hail

作　　者：马鸿青[1] 郭志强[1] 徐义国[1] 董疆南 赵占红[1] MA Hong-qing(Baoding Meteor-ological Bureau,Baoding,Hebei 071000)

机构地区：[1]保定市气象局,河北保定071000

出　　处：《农业灾害研究》2021年第3期134-136,共3页Journal of Agricultural Catastrophology

摘　　要：利用常规观测资料、地面加密观测资料、卫星云图、风廓线雷达以及ear5逐小时再分析资料,对2020年6月25日发生在保定的冰雹天气进行了详细的诊断分析,结果表明:(1)冰雹发生在蒙古冷涡底部的西北气流中,冰雹路径与对流云团的移动方向吻合,冰雹出现在对流云团移动方向的右后侧;(2)较大的高低空垂直风切变促进了深对流的发展,高空急流核左前侧辐散,地面低压区辐合,有利于高低空能量的交换;(3)地面露点锋、中尺度辐合线为本次冰雹等强对流天气的触发机制。Based on the conventional observation data,ground intensive observation data,satellite cloud images,wind profile radar and hourly reanalysis data of ear5,the hail weather occurred in Baoding on June 25,2020 was diagnosed and analyzed in detail.The results show that:(1)the hail occurred in the northwest air flow at the bottom of Mongolia cold vortex,and the hail path is consistent with the moving direction of convective cloud cluster,Hail appears on the right side of the moving direction of convective cloud cluster;(2)The large vertical wind shear at high and low levels promotes the development of deep convection,the divergence of the left front side of the upper jet core and the convergence of the surface low pressure region are conducive to the energy exchange at high and low levels;(3)The surface dew point front and mesoscale convergence line are the trigger mechanism of this severe convective weather.

关 键 词：冰雹 西北气流 露点锋 中尺度辐合线 

分 类 号：S761.4[农业科学—森林保护学]