气象水文海洋仪器Issue(2)：13-18,6.
一次飑线（冰雹）天气过程中尺度分析
Mesoanalysis of a squall line process with hailstone
摘要
Abstract
By using routine synoptic data,physical quantity,Web GIS radar mosaic products and rainfall data from AWS,based on the methods of mesoanalysis and feature extraction,a wide range squall line process with hailstone in Shangrao city on March 19-20th,2013 was analyzed.The results show that the occurrence,development and disappearing of the squall line process with hailstone are mainly affected by the small southwest trough moving eastward in the upper altitude,the strong southwest j et stream in the low and medium altitude and the ground cold air moving southward.There is no typical bow echo when echoes of the squall line with hailstone were developing.Moving direction of the squall line echoes is in accordance with the j et stream in the low and medium altitude.The important characteristics of this squall line process are appearing the hailstone and ultra-short time strong precipitation together,its echo intensity up to 65-70 dBz,and strong echoes gradient is large. During the whole squall line process,the value of CAPE is almost zero.The southwest jet stream in the low and medium altitude and strong vertical wind shear become the significant dynamic and support mechanism for this weather process.关键词
冰雹飑线/超短时强降水/垂直风切变/低空急流Key words
squall line with hailstone/ultra-short time strong precipitation/vertical wind shear/j et stream in the low altitude分类
天文与地球科学引用本文复制引用
卢秋芳,马中元,陈鲍发,苏俐敏,余辉,王晓英..一次飑线（冰雹）天气过程中尺度分析[J].气象水文海洋仪器,2014,(2):13-18,6.基金项目
2012年公益性行业(气象)科研专项《强对流天气短期概率预报技术研究》(GYHY201206004)、中国气象科学研究院灾害天气国家重点实验室2012年开放课题《南方短时强降水中β尺度结构与形成机理研究》(2012LASW-B01)共同资助 （气象）
