摘要
分析了2008年6个东北转向台风的环流形势及其与西风槽等的关系,得出当台风处于大陆高压和西太平洋副热带高压之间的中纬度西风槽前时,其转向与西风槽密切相关的结论。(1)西风槽与台风转向点的平均位置距离为5.2个经距:当台风离西风槽较远时,台风依原来路径前行;在恰当位置(即5.2个经距)时台风发生转向。(2)台风转向的东、北分量大小与西风槽走向关系密切。(3)当台风外围云系接近西风槽云系时,应警惕台风发生东北转向的可能趋势。尝试对转向台风进行量化上的分析探究,为今后预报类似的台风提出一些参考思路。
The forecasting of tumning typhoon is a difficulty, In this paper, the circulations of six turnning typhoons and their relationship with westerly in 2008 are analysed to get the conclusions below： weather typhoon would turn or not is in close relation to westerly when it betweens continental high and West Pacific subtropical high ？ （1） the average distance beteeen westerly and turnning point of typhoon is 5.2 longitudes. （2） The east component and north component of turnning typhoon have close relationship with the trend of westerly. （3） It should be wary about the northeast turning probability of typhoon when its periphery nephsystem dosed to westerlies system. This paper try to analyze the turnning typhoon quantitatively in order to provide some considerations of forcasting similar typhoons.
出处
《热带气象学报》
CSCD
北大核心
2009年第B12期113-118,共6页
Journal of Tropical Meteorology
基金
福建省泉州市科技局2006年度科技课题研究项目资助(项目编号:FJQZC200680号)资助
关键词
台风转向点
环流形势
西风槽
西南气流
5.2个经距
turnning position of typhoon
circulation
westerly
southwest air current
5.2 longitudes
