Ocean Science
Ocean Science
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Articles | Volume 22, issue 5
Articles | Volume 22, issue 5
https://doi.org/10.5194/os-22-3415-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-22-3415-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 5
Research article
 | 
27 Oct 2026
Research article |  | 27 Oct 2026

Diapycnal mixing in submesoscale-permitting simulations of the deep Brazil Basin

Yonglin Huang, Annalisa Bracco, Kurt Polzin, and Jonathan Gula

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Short summary
We compared five high-resolution simulations with observations from the Brazil Basin to test how models represent deep-ocean mixing above rough seafloor. By tracking virtual particles, we found that the simulations reproduce strong mixing near the bottom, and higher resolution produces enhanced mixing in the ocean interior. Our results indicate that smoothed seafloor details weaken wave breaking and leave too much energy in eddies, making them more intense than they likely are in the real ocean.
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