| 水平网格计算频散性的研究 |
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| 引用本文： | 刘宇迪,桂祁军,等.水平网格计算频散性的研究[J].应用气象学报,2001,12(2):140-149. |
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| 作者姓名： | 刘宇迪 桂祁军 |
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| 作者单位： | 解放军理工大学气象学院, 南京 211101 |
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| 摘 要： | 从线性浅水方程组出发, 在Arakawa A—E网格、Z网格和Eliassen网格上, 分可分辨和不可分辨两种情况, 从频率和群速方面讨论了这7种网格的计算频散性, 并指出了每种网格出现错误群速的水平尺度范围。结果表明:在可分辨的情况下, Z、C和Eliassen网格较其它网格效果好; 在不可分辨的情况下, B网格较其它网格效果好。
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| 关 键 词： | 网格 惯性重力波 频散方程 群速 |
| 收稿时间： | 1999-06-14 |
| 修稿时间： | 1999年6月14日 |
Impact of Horizontal Grid on Inertial-gravity Wave |
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| Liu Yudi,Gui Qijun,Li Xingdong,Zhu Hongwei.Impact of Horizontal Grid on Inertial-gravity Wave[J].Quarterly Journal of Applied Meteorology,2001,12(2):140-149. |
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| Authors: | Liu Yudi Gui Qijun Li Xingdong Zhu Hongwei |
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| Institution: | PLA University of Science and Technology, Nanjing 211101 |
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| Abstract: | The computational dispersion properties of Arakawa A-E, Z and Eliassen grids, based on the linear swallow water equations, are analyzed in terms of frequency and group velocity characteristics respectively for irresoluble and resoluble models. The horizontal scale ranges in which wrong group velocities will result in for every grid are pointed out. It is shown that for the resoluble model, Z, C and Eliassen grids are the best in dispersion characteristics among all grids considered and for the irresoluble model, B grids are the best. |
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| Keywords: | Grid Inertial-gravity wave Disperse equation Group velocity |
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