Ocean Science
Ocean Science
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Articles | Volume 21, issue 2
Articles | Volume 21, issue 2
https://doi.org/10.5194/os-21-829-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-21-829-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 21, issue 2
Research article
 | 
22 Apr 2025
Research article |  | 22 Apr 2025

Dissipation ratio and eddy diffusivity of turbulent and salt finger mixing derived from microstructure measurements

Jianing Li, Qingxuan Yang, and Hui Sun

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Short summary
The Osborn relation is widely used to estimate the diapycnal mixing rate, but its accuracy is questioned due to the assumed constant dissipation ratio (Γ) without identifying mixing types. We identify a salt finger and turbulence in the western Pacific and midlatitude Atlantic, finding that Γ is highly variable and related to turbulence parameters, through which we improve mixing rate estimates. Identifying mixing types and refining Γ are necessary to improve mixing parameterization accuracy.
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