非静力滞弹性模式中水平分辨率与垂直分辨率的协调性初探

刘宇迪; 田福厚; 张亮; 侯志明

非静力滞弹性模式中水平分辨率与垂直分辨率的协调性初探

1.
中国科学院大气物理研究所LASG, 北京, 100029;解放军理工大学气象学院, 江苏, 南京, 211101
2.
解放军总参大气环境研究所, 北京, 100029
3.
解放军理工大学气象学院, 江苏, 南京, 211101

基金项目: 国家自然科学基金项目(40505024)开放课题;中国科学院大气物理研究所LASG开放课题共同资助

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出版历程
- 收稿日期: 2005-03-30
- 修回日期: 2005-08-08

MATCH BETWEEN THE HORIZONTAL RESOLUTION AND THE VERTICAL ONE IN NONHYDROSTATICAL ANELASTIC MODEL

1.
Institute of Atmospheric Physics, Chinese Academy of Sciences, LASG, Beijing 100029, China;Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China
2.
Institute of atmospheric environment, PLA general staff, Beijing 100029, China
3.
Institute of Meteorology, PLA University of Science and Technology, Nanjing 211101, China

摘要

摘要: 为了理论上研究非静力滞弹性模式中水平分辨率与垂直分辨率之间的搭配问题,以线性斜压滞弹性方程组为出发方程,导出解析的频散方程、水平群速方程和垂直群速方程,同时在最优三维网格C/CP下进行离散,也导出频散方程、水平群速方程和垂直群速方程,然后用图示的方法,比较了在不同的水平和垂直格距下模拟解析解所产生的误差。结果表明:当垂直格距和水平格距相当时,在C/CP网格上对惯性重力波的频率、水平群速和垂直群速都能较好地模拟,产生的相对误差均在5%以下。
- C/CP网格 /
- 水平分辨率 /
- 垂直分辨率 /
- 协调
Abstract: For the purpose of theoretically investigating the match between the horizontal and vertical resolutions in the nonhydrostatical anelastic model,starting from the linear baroclinic anelastic equations,the analytical frequency and horizontal/vertical group velocity are derived.For comparison,the discretized frequency and horizontal/vertical group velocity are gained from the discretized equations on the best 3D grid C/CP.Then we graphically discuss the errors produced in the cases of different horizontal and vertical grid spacing.The result shows that when the vertical grid-spacing is comparable to the horizontal one,the frequency and horizontal/vertical group velocity of the inertial-gravitational wave are well simulated on the C/CP grid in the nonhydrostatical anelastic model,and their relative errors are below 5%.
- C/CP grid /
- horizontal resolution /
- vertical resolution /
- match

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参考文献(13)

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