双台风相互作用的数值研究

炎利军; 田永祥; 黄先香

双台风相互作用的数值研究

1.
广东省佛山市气象局, 广东, 佛山, 528000
2.
南京气象学院, 江苏, 南京, 210044

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出版历程
- 收稿日期: 2002-09-25
- 修回日期: 2003-02-18

A NUMERICAL STUDY OF THE INTERACTION OF TWIN TYPHOONS

1.
Foshan Meteorological Bureau, Guangdong 528000, China
2.
Nanjing Institute of Meteorology, Nanjing 210044, China

摘要

摘要: 无基本气流的情况下,应用无辐散正压模式对初始呈西北-东南等方位的双台风相互作用进行数值研究,探讨了非对称理论在双台风相互作用中的应用。试验结果表明:双台风的运动特征能够运用非对称理论进行解释;非对称流函数场中,通风气流分别控制着双台风的移动,同时双台风的移动对其对应的非对称结构具有反作用。试验还表明,台风非对称结构内小尺度涡旋的强度及其绕台风中心逆时针旋转的快慢与台风路径的摆动关系密切;模式可以模拟出台风逆时针打转、“蛇形”摆动等异常移动路径。
- 双台风 /
- 相互作用 /
- 数值模拟 /
- 非对称理论
Abstract: Using a nondivergent barotropic model with no basic flow the interaction of twin typhoons is numerically simulated, in order to understand how asymmetric theory influences on interaction between the two typhoons. Results show that the asymmetric theory can explain the motional features of binary typhoons. Each of the twin typhoons will be governed mainly by the ventilation flow passing its center. On the other hand, the movement of twin typhoons can react to their asymmetric structures. In addition, the rotary velocity of small scale gyres and its strength in the asymmetric structure of typhoons have a close relation to the meander of typhoon's track. This simple model can present the singular tracks of typhoons, such as snake meandering and moving around counterclockwise.
- twin typhoons /
- interaction /
- numerical simulation /
- asymmetric theory

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参考文献(12)

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