桑建国,张治坤,张伯寅. 2000. 热岛环流的动力学分析[J]. 气象学报, 58(3):321-327, doi:10.11676/qxxb2000.033 |
热岛环流的动力学分析 |
DYNAMICAL ANALYSES ON HEAT ISLAND CIRCULATION |
投稿时间:1998-11-13 修订日期:1999-04-14 |
DOI:10.11676/qxxb2000.033 |
中文关键词: 热岛 温度交叉 重力波 辐合中心 |
英文关键词:Heat island Temperature cross-over Gravity waves Convergence center |
基金项目:国家自然科学基金 |
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中文摘要: |
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。 |
英文摘要: |
The linearized atmospheric equation system is solved analytically to obtain a theoretical model of the urban heat island circulation. In the model the three-dimensional 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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