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非静力模式中几种垂直网格计算特性的对比研究
作者姓名:Liu Yudi  Ji Zhongzhen  Wang Bin
作者单位:Liu YudiLASG Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029 Meteorological College,PL A University of Science and Engineering,Nanjing 211101Ji Zhongzhen and Wang BinLASG,Institute of Atmospheric Physics,Chinese Academy
基金项目:This work is jointly sponsored by the State-Level Key Basic Research Program of China(G1999032801),Na-tional Pioneering Young Scientists Funds of China(49825109)and the National Natural Science Foundation ofChina under Grant No.49975020.
摘    要:从非静力滞弹性方程组出发,将惯性重力波的水平波长分几百公里、几十公里和几公里三种情况,从频率、群速和各速的垂直尺度范围等方面对现有的几种垂直网格进行比较讨论。结果表明:在非静力模式中,CP网格和LZ网格适合于各种不同水平尺度惯性重力波的模拟;L网格和LY网格适合于水平尺度为几十公里以上的惯性重力波的模拟;LTS网格和CPTS网格比较适合于水平尺度的几十公里以下的惯性重力波的模拟。

关 键 词:非静力模式  垂直网格  频率  群速  垂直尺度范围  惯性重力波
收稿时间:11 October 2000

Study on computational properties of several vertical grids with a nonhydrostatic model in comparison to analytical solutions
Liu Yudi,Ji Zhongzhen,Wang Bin.Study on computational properties of several vertical grids with a nonhydrostatic model in comparison to analytical solutions[J].Advances in Atmospheric Sciences,2002,19(3):528-543.
Authors:Liu Yudi  Zhongzhen Ji  Wang Bin
Institution:LASG Institute of Atmospheric Physics, Chinese Academy of Scienees, Beijing 100029;Meteorological College, PLA University of Scienee and Engineering, Nanjing 211101,LASG, Intitute of Atmospheric Phisics Chinese Academy of Sciene.s, Beijing 100029,LASG, Intitute of Atmospheric Phisics Chinese Academy of Sciene.s, Beijing 100029
Abstract:Starting from nonhydrostatic anelastic equations a comparative investigation is performed of inertial-gravitational wave hundreds, tens and a few of kilometers in horizontal wavelength, which are ex amined on vertical grids available at present from the perspectives of frequency, vertical component of group velocity and the inappropriate range for a positive vertical component emerging, with the findings compared to analytical solutions. Evidence suggests that grids CP and LZ are suitable for the study of the wave at the mentioned horizontal scales and the counterparts L and LY (LTS and CPTS) are applicable on ly to the horizontal scales of more (less) than tens of kilometers.
Keywords:Vertical grids  Frequency  Vertical component of group velocity  Range of vertical scales for positive and negative vertical component
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