罗哲贤. 1994. 能量频散对台风结构和移动的作用[J]. 气象学报, 52(2):149-156, doi:10.11676/qxxb1994.019 |
能量频散对台风结构和移动的作用 |
EFFECT OF ENERGY DISPERSION ON STRUCTURE AND MOTION OF TROPICAL CYCLONE |
投稿时间:1992-07-31 修订日期:1993-02-11 |
DOI:10.11676/qxxb1994.019 |
中文关键词: 台风 频散 结构 移动 |
英文关键词:Tropical cyclone Energy disPersion Structure Movement |
基金项目:国家八五科技攻关项目 |
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中文摘要: |
本文用双Fourier展开的解析方法和β平面准地转正压模式数值试验的方法,研究了台风涡旋能量频散及其对台风路径的影响问题。解析与数值试验的结果一致地表明,由于能量频散,在台风中心以东方向形成了一个低-高-低值系统的波列。三组数值试验的结果表明,波列中的高值系统对台风的结构和移行具有明显的影响。 |
英文摘要: |
The structure and movement of tropical cyclone is studied using an analytical as well as a numerical model in a beta-Plane nondivergent barotroPic framework.The analytical model and the linear version of the numerical one give essentially the same result:the energy dispersion from tropical cyclone can creat anL-H-L wave-train in the east region of tropical cyclone.Three numerical experiments whose integration times equal to seven model days by the nonlinear model exhibit that the closed high in the wave-train produces obvious influence on the structure and track of troPical cyclone. |
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