本文已被：浏览 1144次 下载 1377次
中文摘要: 天气实践表明:台风前部有强烈的对流活动,它们经常是强雷暴和龙卷的孕育地和集中地?分析1962—1984年发生在江苏境内台前龙卷过程表明:龙卷产生在台风的一定部位,一般在台风运动方向的右前象限,并且与台风强度变化等因素有关?本文还利用中尺度涡度方程,初步分析台前_龙卷风萌发的原因?并指出:台前的强对流云团中,涡度方程倾斜项的作用是龙卷涡旋萌发的重要条件之一?
中文关键词:
Abstract:Weather events show that severe convective activities usually appear in front of a.typhoon which frequently initiate severe thunderstorms and tornadoes. Analyses on the processes of tornadoes in front of typhoons taking place in Jiangsu Province from 1962 to 1984 show that a tornado is forming in certain position where is always along the right-front side in the direction of the typhoon movement , and associated with the typhoon intensity and other factors.In this paper we also analyse the genesis factors of the tornado in front of a typhoon by means of meso-scaieverticity equation, We oint pout that the. slopes( grad w ) in vorticityequation is one of the important conditions of the tornado cyclone's genesis in severe convective clouds in front of a typhoon.
keywords:
文章编号： 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
引用文本：
沈树勤,1990.台风前部龙卷风的一般特征及其萌发条件的初步分析[J].气象,16(1):11-15.
,1990.Analysis of the general characteristics and genesis conditions of tornado in front of typhoon[J].Meteor Mon,16(1):11-15.
沈树勤,1990.台风前部龙卷风的一般特征及其萌发条件的初步分析[J].气象,16(1):11-15.
,1990.Analysis of the general characteristics and genesis conditions of tornado in front of typhoon[J].Meteor Mon,16(1):11-15.