| 热岛环流的动力学分析 |
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| 引用本文： | 桑建国,张治坤,张伯寅. 热岛环流的动力学分析[J]. 气象学报, 2000, 58(3): 321-327 |
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| 作者姓名： | 桑建国 张治坤 张伯寅 |
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| 作者单位： | 北京大学地球物理系,北京,100871 |
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| 摘 要： | 文中根据线性化的大气方程组求得了城市热岛环流的理论模式。利用此模式分析了温度场和流场的三维结构，并和观测结果做了对比。在解析解中，研究了大气条件诸如风速、湍流扩散系数、Ragleigh摩擦以及层结的影响，同时讨论了重力波对温度分布垂直结构的效应。
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| 关 键 词： | 热岛 温度交叉 重力波 辐合中心 |
| 收稿时间： | 1998-11-13 |
| 修稿时间： | 1999-04-14 |
DYNAMICAL ANALYSES ON HEAT ISLAND CIRCULATION |
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| Sang Jianguo,Zhang Zhikun and Zhang Boyin. DYNAMICAL ANALYSES ON HEAT ISLAND CIRCULATION[J]. Acta Meteorologica Sinica, 2000, 58(3): 321-327 |
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| Authors: | Sang Jianguo Zhang Zhikun Zhang Boyin |
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| Affiliation: | Department of Geophysics, Peking University, Beijing, 100871;Department of Geophysics, Peking University, Beijing, 100871;Department of Geophysics, Peking University, Beijing, 100871 |
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| Abstract: | The linearized atmospheric equation system is solved analytically to obtain a theoretical model of the urban heat island circulation. In the model the three-dimensio-nal structure of temperature and flow fields in the circulation are analysed and compared with the observations. The influences of the atmospheric conditions, such as wind speed, eddy diffusivity, Rayleigh friction as well as stratification are investigated analytically. In addition, the effects of gravity waves on the vertical structure of the temperature distribution are also discussed. |
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| Keywords: | Heat island Temperature cross-over Gravity waves Convergence center |
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