2016年6月江苏阜宁一次超强龙卷的特征分析  

Analyses of Characteristics on A Super Tornado in Funing,Jiangsu Province in June,2016

作　　者：顾瑜 孙即霖 楚合涛[3] 

机构地区：[1]中国海洋大学海洋与大气学院,山东青岛266100 [2]中国海洋大学物理海洋教育部重点实验室,海洋大气相互作用与气候实验室,山东青岛266100 [3]莱西市气象局,山东莱西266600

出　　处：《中国海洋大学学报（自然科学版）》2018年第2期11-21,共11页Periodical of Ocean University of China

基　　金：国家自然科学重点基金项目(41430963); 国家自然科学基金项目(41276012)资助

摘　　要：利用常规气象观测资料、NCEP/NCAR再分析资料、FY-2E卫星和多普勒雷达等资料,对2016年6月23日江苏省阜宁县一次EF4级超强龙卷天气过程进行了分析。研究表明:(1)龙卷发生前,300hPa附近的冷平流和850hPa附近的暖平流增强了大气对流层垂直层结的不稳定性,700和850hPa低涡切变东移,地面气旋提供的海上水汽输送和天气尺度上升运动抬升触发作用,高低层风速存在强风切变提供有利于中小尺度风暴自组织系统加强等因素,构成了本次龙卷过程发生的环境条件。(2)造成本次龙卷的超级单体风暴持续近4h,具有典型的钩状回波,有持续强盛的气旋性涡旋存在。(3)造成本次强龙卷的超级单体具有深厚的中气旋,龙卷涡旋特征较强,龙卷发生在3D环流厚度及最大切变剧增的时候。Based on the conventional meteorological observation data,NCEP/NCAR reanalysis data,FY-2 Esatellite imagery and Doppler radar data,the EF4 super tornado occurred in Fu-ning County,Jiangsu Province on 23 June,2016 was analyzed.The results show that:(1)before the tornado generation,the cold advection at 300 hPa and the warm advection at 850 hPa increased the vertical instability of the troposphere.The low vortex sheared eastward at 700 and 850 hPa.The cyclone on the ground provided the sea water vapor transport and the trigger effect of upward movement in the weather scale.The strong wind shearing in high and low layers was conducive to strengthening the storm self-organization system in small and medium scale.It constituted the tornado process of environmental conditions.(2)The super monomer storm causing the tornado lasted nearly 4 hours with the typical hook echo and there was a strong cyclone vortex.(3)The super monomer causing this strong tornado was with a deep cyclone and the tornado vortex characteristic was very strong.The tornado occurred in the surge of 3D circulation thickness and the maximum shear.

关 键 词：超强龙卷 环流背景 超级单体 中气旋 龙卷涡旋特征 

分 类 号：P468.026[天文地球—大气科学及气象学]