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大地形对行星波空间结构及其移速影响的数值试验
Numerical Experiments with the Impact of the Plateau on the Characteristic Spatial Structure and Moving Speed of Planetary Waves
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摘要: 本文采用p-σ混合坐标十二层初始方程模式，研究了青藏高原与东亚实际地形对于行星波空间结构影响效应问题。本文数值试验表明：青藏高原动力效应与大地形结构特征显著相关；大地形因素的影响可以导致行星波在移动过程中其空间结构呈复杂变化，即引起行星波在大地形南北坡的位相差、系统的变速现象及结构的形变等特征。Abstract: The impact of the Qinghai-Xizang Plateau as a huge orography on the spatial structure of moving planetary waves is investigated using the 12-layer primitive equation model with p-σincorporated corrdinate. The results show that the Plateau’s dynamic effect is highly correlated with its characteristic configuration. The plateau as a noteworthy factor may result in a complicated change of the spatial structure of moving planetary waves, that is to lead to the phase difference between two waves on the north- and south-facing slope, wave speed change and deformation of the spatial structure
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