Toward an ultra-simple spectral gravity wave parameterization for general circulation models
Toward an ultra-simple spectral gravity wave parameterization for general circulation models
复制标题
大气环流模型的超简单谱重力波参数化
DOI：
10.1186/bf03353209
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
M. McIntyre
中科院分区：
文献类型：
--
作者：
C. D. Warner;M. McIntyre
本文报告的第一步计算成本低的频谱重力波参数化方案，其预测近似的一个完整的三维（在频谱空间）的大气重力波的频谱模型。减少到两个维度，由海因斯提出，需要忽略科里奥利和非流体静力学的影响，探索与一个完整的三维功率谱模型，包括科里奥利和非流体静力学的影响比较的基础上。减少试图更现实的频谱形状方面，虽然简单的破波标准。它在没有背景切变的情况下工作得非常好，但在存在背景切变的情况下工作得不太好。差异的原因正在调查中，因为是二维计划的影响，包括海因斯以及我们的。
This paper reports first steps toward a computationally inexpensive spectral gravity wave parameterization scheme whose predictions approximate those of a full three-dimensional (in spectral space) spectral model of atmospheric gravity waves. A reduction to two dimensions, as proposed by Hines, requiring the neglect of Coriolis and non-hydrostatic effects, is explored on the basis of comparisons with a full three-dimensional power-spectral model that includes Coriolis and non-hydrostatic effects. The reduction tries to be more realistic in terms of spectral shapes, though simpler in terms of wave-breaking criteria. It works remarkably well in the absence of, but less well in the presence of, background shear. The reasons for the discrepancies are under investigation, as are the implications for two-dimensional schemes, including Hines’ as well as ours.