海面风场对环台湾岛海域温跃层的影响

作者：毛园  沙文钰

单位：解放军理工大学气象学院 南京

关键词：环台湾岛海域 风应力 温跃层

分类号：P733

出版年·卷·期（页码）：2002·2002·第三期（33-43）

摘要：

本文首先给出了环台湾岛海域的海表风场计算方法和海表风应力的参数化。在此基础上,把该研究海域分为四个区域,用对比的方法分析由POM模式所得到的数值结果,讨论了海表风应力对该海域不同类型温跃层的具体影响。主要结果如下:海表风应力是影响温跃层的动力因子,对季节性温跃层的深度和强度均有重大影响,但对大洋温跃层的影响不大;海面风场作用数值计算与实际风场误差不大,故可以用计算所得的风场来代表实际风场作实验对比分析;海表风应力较小时有利于温跃层的发展加强,风应力较大时温跃层将减弱消失。

In this paper,the computation method of wind field and the effect of wind stress parameterization on the thermocline of sea area around Taiwan Island are given at first. On these bases, the studied areas is divided into four representational areas. The conclusions of the numerical simulation model, known as POM, are used to discuss effect of wind stress on the different types of thermocline. The main conclusions are as follow: 1. The wind stress of sea surface is one dynamical factor of thermocline, which has important effect on intensity and depth of the seasonal thermocline. 2. The error between the numerical computation of wind field and actual wind field is small, so computed wind field can be used to compared with and analysed in stead of actual wind field. 3. The thermocline can develop and strengthen easily when wind stress is smaller, while it will weaken and disappear when wind stress is stronger.

参考文献：

[1] 沙文钰,吕新刚等.环台湾岛海域半日潮波特征的三维模拟.海洋学报,2001,23(4):31～40. [2] Mellor, G. L. and T. Yamada, Development of a turbulence closure model for geophysical fluid problems,Rea. Geophys. Space Phys, 1982, 20 (4): 851～875. [3] 肖晖,蔡淑惠.台湾海峡海面风场数值计算.台湾海峡,1984,7(3):228～233. [4] 秦曾灏.关于海面风应力的计算问题.海洋学报,1979,1(1):17～38. [5] 孙湘平等.台湾岛东西两岸的海流.黄渤海海洋,1996,14(2):9～1.

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