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Observed Dispersion Relation of Yanai Waves and 17-Day Tropical Instability Waves in the Pacific Ocean

机译:太平洋沿亚奈海浪和17天热带不稳定波的色散关系

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References(21) Cited-By(5) Supplementary materials(1) Using sea surface height (SSH) data derived from recent satellite observations, we present the observed dispersion relationship of mixed Rossby Gravity (Yanai) waves in the Pacific Ocean. A wavenumber-frequency spectral analysis of SSH fields shows prominent spectral peaks along the dispersion curves of first and second baroclinic mode oceanic Yanai waves. Also, salient features of tropical instability waves (TIWs) with a period of ∼17 days can be effectively isolated based on a cross-correlation analysis of sea surface temperature (SST) and SSH time series that are filtered in wavenumber-frequency domain. These statistical representations of oceanic Yanai waves and TIWs are important for the evaluation of numerical model simulations of these waves and for improving our understanding of the physics of 17-day TIWs.
机译:参考文献(21)被引用的(5)补充材料(1)使用最新卫星观测得出的海面高度(SSH)数据,我们介绍了混合的Rossby重力(Yanai)波在太平洋中的观测色散关系。 SSH场的波数-频谱分析表明,沿第一斜压模式和第二斜压模式海洋柳井波的频散曲线,存在着突出的光谱峰。此外,基于在波数-频域中过滤的海表温度(SST)和SSH时间序列的互相关分析,可以有效地隔离出约17天的热带不稳定波(TIW)的显着特征。这些海洋亚奈海浪和TIW的统计表示对于评估这些海浪的数值模型模拟以及增进我们对17天TIW物理的理解非常重要。

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