气象研究与应用2018，Vol.39Issue(1)：28-32,90,6.
1713号台风"天鸽"外围龙卷特征及成因分析
Analysis of the characteristics and causes of the peripheral tornado of NO.1713 Typhoon Hato
摘要
Abstract
Using conventional observation data, Doppler weather radar, and regional encrypted automatic station data, the tornado process in NO.1713 typhoon Hato periphery was analyzed. The main conclusions of this paper were: (1) the tornado occurred in the front of the spiral cloud band in the typhoon periphery. Analysis of physical quantities showed that there was high instability energy in southeast Guangxi. The vertical wind shear in the middle-low level was large and the lifting condensation level was very low. These were the environmental conditions that conducive to the development of the tornado. The surface mesoscale convergence line triggered the generation of a new convection cell which eventually developed into a tornado with high temperature, high humidity, and strong instability. (2) This tornado was a micro -supercell storm with hook echo in the low level, echo overhung and bounded weak echo region (BWER) in the middle-upper level, which were typical supercell features. The evolution of the low -level hook echo was closely related to the occurrence and extinction of the tornado. (3) The mesocyclone appeared before the low -level hook echo and the hook echo appeared near the strong mesocyclone. When the tornado occurred, the bottom height of the mesocyclone was about 2km, the bottom height of TVS shear was about 0. 5km and continued to descend, which was consistent with the tornado funnel cloud that gradually descended to the ground.关键词
台风/龙卷/钩状回波/中气旋/TVSKey words
typhoon/tornado/hook echo/mesocyclone/TVS分类
天文与地球科学引用本文复制引用
黄荣,黄晴,屈梅芳,赖珍权..1713号台风"天鸽"外围龙卷特征及成因分析[J].气象研究与应用,2018,39(1):28-32,90,6.基金项目
中国气象局预报司龙卷预警业务试验能力建设(二期)、广西短时临近预报技术创新团队项目共同资助. （二期）
