Articles | Volume 19, issue 3
Research article
12 Jun 2023
Research article |  | 12 Jun 2023

Validating the spatial variability in the semidiurnal internal tide in a realistic global ocean simulation with Argo and mooring data

Gaspard Geoffroy, Jonas Nycander, Maarten C. Buijsman, Jay F. Shriver, and Brian K. Arbic

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Cited articles

Alford, M. H. and Zhao, Z.: Global patterns of low-mode internal-wave propagation. Part I: Energy and energy flux, J. Phys. Oceanogr., 37, 1829–1848,, 2007. a
Ansong, J. K., Arbic, B. K., Alford, M. H., Buijsman, M. C., Shriver, J. F., Zhao, Z., Richman, J. G., Simmons, H. L., Timko, P. G., Wallcraft, A. J., and Zamudio, L.: Semidiurnal internal tide energy fluxes and their variability in a global ocean model and moored observations, J. Geophys. Res.-Oceans, 122, 1882–1900,, 2017. a, b
Arbic, B. K.: Incorporating tides and internal gravity waves within global ocean general circulation models: A review, Prog. Oceanogr., 206, 102824,, 2022. a
Arbic, B. K., Wallcraft, A. J., and Metzger, E. J.: Concurrent simulation of the eddying general circulation and tides in a global ocean model, Ocean Model., 32, 175–187,, 2010. a
Arbic, B. K., Elipot, S., Brasch, J. M., Menemenlis, D., Ponte, A. L., Shriver, J. F., Yu, X., Zaron, E. D., Alford, M. H., Buijsman, M. C., Abernathey, R., Garcia, D., Guan, L., Martin, P. E., and Nelson, A. D.: Frequency dependence of near-surface oceanic kinetic energy from drifter observations and global high-resolution models, arXiv [preprint],, 22 July 2022. a
Short summary
The ocean state is sensitive to the mixing originating from internal tides (ITs). To date, our knowledge of the magnitude and spatial distribution of this mixing mostly relies on uncertain modeling. Here, we use novel observations from autonomous floats to validate the spatial variability in the semidiurnal IT in a realistic ocean simulation. The numerical simulation is found to correctly reproduce the main spatial patterns of the observed tidal energy but to be biased low at the global scale.