摘要
为证明两种新的垂直跳点网格──ＬＺ网格和ＬＹ网格的有效性，从频率、群速 和出现错误群速的垂直尺度范围等方面与现有的几种垂直跳点网格和时间──垂直跳点网格 进行了比较。结果表明：ＬＺ网格计算频散性与目前使用的最广泛的并且计算频散性也是最 佳的ＣＰ网格相当，而ＬＹ网格次之，从而为模式设计者选取垂直网格提供了又一种选择。
Two new vertically staggered grids, LZ grid and LY grid, are introduced. To account for their validities, the computational dispersion properties of LZ grid and LY grid are compared with all the other vertically staggered grids in terms of frequency and group velocity characteristics and the vertical scale ranges with group velocities of the wrong sign. Its result shows that the dispersion properties of the LZ grid are the same as those of the CP grid which is widely used and is the most optimal vertically staggered grid, and LY grid is the second one. Thus, it may provide additional choice of the appropriately vertical grid for modelers.
出处
《大气科学》
CSCD
北大核心
2001年第4期523-535,共13页
Chinese Journal of Atmospheric Sciences
基金
国家重点基础研究发展规划项目G1999032801
国家杰出青年科学基金项目49825109
国家自然科学基金资助项目499
