鲁西南及周边一次强对流天气诊断分析  

Analysis of the Diagnosis of a Strong Convection Weather in Southwestern Shandong and Surrounding Areas

作　　者：张熙 李一伟[2] 张翠翠 ZHANG Xi;LI Yiwei;ZHANG Cuicui(Key Laboratory of Meteorological Disaster Prevention and Mitigation in Shandong Province,Jinan Shandong 250031;Jining Meteorological Bureau of Shandong Province,Jining Shandong 272000)

机构地区：[1]山东省气象防灾减灾重点实验室,山东济南250031 [2]山东省济宁市气象局,山东济宁272000

出　　处：《河南科技》2021年第17期144-146,共3页Henan Science and Technology

基　　金：山东省气象局青年基金项目(2018SDQN15)。

摘　　要：本文利用MICAPS系统常规观测资料、雷达资料对2015年5月6日鲁西南及周边地区发生的强对流天气进行诊断,并对回波的生消演变做了分析。结果表明,东北冷涡稳定维持的背景下,阶梯槽东移过程中,冷平流强迫引起大风、冰雹天气;高层有较强的干冷平流,叠加在低层暖湿平流上,形成了强对流不稳定层结,强的垂直风切变位于中低层,配合较强的动力抬升条件,有利于冰雹发生与发展;地面温度、露点大值区及高梯度区是对流的触发区域,同时上述区域对回波的移动发展也起到关键作用。This paper used MICAPS system routine observation data and radar data to diagnose the severe convective weather that occurred in Southwestern Shandong and surrounding areas on May 6,2015,and analyzed the evolution of echoes.The results showed that under the background of the stable maintenance of the northeast cold vortex,the cold advection forced gale and hail weather during the eastward movement of the stepped trough;there was strong dry and cold advection in the upper layers,superimposed on the warm and wet advection in the lower layers,forming a strong convective and unstable stratification,strong vertical wind shear was located in the middle and low layers,and with strong dynamic uplift conditions,it was conducive to the occurrence and development of hail;the ground temperature,large dew point area and high gradient area were the triggering areas of convection,and the above-mentioned areas also played a key role in the movement and development of echoes.

关 键 词：强对流 鲁西南 冰雹 

分 类 号：P458.1[天文地球—大气科学及气象学]