The Importance of Remote Forcing for Regional Modeling of Internal Waves
The Importance of Remote Forcing for Regional Modeling of Internal Waves
复制标题
远程强迫对于内波区域模拟的重要性
DOI：
10.1029/2019jc015623
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Wang, Jinbo
中科院分区：
文献类型：
--
作者：
Mazloff, Matthew R.;Cornuelle, Bruce;Gille, Sarah T.;Wang, Jinbo
区域海洋环流模式通常在边界处受到中尺度海洋动力学和正压潮汐的强迫。在这项工作中，我们提供的证据表明，远程强迫内波可以是一个重要的能源的动态。我们比较全球和区域模型解决方案内的加州电流系统。这两个模型有相似的输入、强迫和相同的网格和数值。全球模型的空间高度功率谱与超惯性频率下的系泊观测结果一致，而区域模型谱较弱。区域模式在高波数下的海面高度方差也小于全球模式。垂直速度方差是显着较大的全球模式，除了在庇护南加州湾。虽然区域模式的高通斜压和正压动能水平大致相等，但全球模式的高通斜压动能比正压动能大28%（0.39 PJ）。内部波能通量分析表明，区域模型域边界作为一个汇的183兆瓦，而在全球模型中的分析域边界作为一个源的539兆瓦。假设斜压动能耗散时间约为6.3天，这722兆瓦的差异可以解释全球模式中0.39 PJ高通斜压能量的相对增加。这里的结果意味着，大多数区域海洋模式将需要考虑内波边界通量，以重现观测到的内波连续谱。
Regional ocean general circulation models are generally forced at the boundaries by mesoscale ocean dynamics and barotropic tides. In this work we provide evidence that remotely forced internal waves can be a significant source of energy for the dynamics. We compare global and regional model solutions within the California Current System. Both models have similar inputs, forcings, and identical grids and numerics. The global model has a steric height power spectrum consistent with mooring observations at superinertial frequencies, while the regional model spectrum is weaker. The regional model also has less sea surface height variance at high wavenumber than the global model. The vertical velocity variance is significantly larger in the global model, except in the sheltered Southern California Bight. While the regional model has roughly equal high‐pass baroclinic and barotropic kinetic energy levels, the global model high‐pass baroclinic kinetic energy is 28% (0.39 PJ) greater than the barotropic energy. An internal wave energy flux analysis reveals that the regional model domain boundaries act as a sink of 183 MW, while in the global model the analysis domain boundaries act as a source of 539 MW. This 722 MW difference can account for the relative increase of 0.39 PJ high‐pass baroclinic energy in the global model, assuming a baroclinic kinetic energy dissipation time in the domain of approximately 6.3 days. The results here imply that most regional ocean models will need to account for internal wave boundary fluxes in order to reproduce the observed internal wave continuum spectrum.
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影响因子：
16.6
作者：
Su Z;Wang J;Klein P;Thompson AF;Menemenlis D
通讯作者：
Menemenlis D
影响因子：
3.2
作者：
A. Ponte;B. Cornuelle
通讯作者：
A. Ponte;B. Cornuelle
影响因子：
2.6
作者：
M. Passaro;S. Dinardo;G. Quartly;H. Snaith;J. Benveniste;P. Cipollini;B. Lucas
通讯作者：
M. Passaro;S. Dinardo;G. Quartly;H. Snaith;J. Benveniste;P. Cipollini;B. Lucas
来自水下滑翔机网络的加州洋流系统的气候学
影响因子：
4.1
作者：
D. Rudnick;K. Zaba;R. Todd;R. Davis
通讯作者：
R. Davis
DOI：
10.1029/2018jc014248
发表时间：
2018-10
期刊：
Journal of Geophysical Research: Oceans
影响因子：
--
作者：
T. Kilpatrick;S. Xie;A. Miller;N. Schneider
通讯作者：
T. Kilpatrick;S. Xie;A. Miller;N. Schneider