Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 16
Articles | Volume 19, issue 16
https://doi.org/10.5194/gmd-19-7939-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-19-7939-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 16
Model description paper
 | 
26 Aug 2026
Model description paper |  | 26 Aug 2026

Turbulence-driven nutrient supply sustains ice-algal growth in the Arctic: a modeling approach with CICE 6.1 coupled to Icepack 1.2, and with SIMBA 2.0

Giulia Castellani, Karley Campbell, Sebastien Moreau, and Pedro Duarte

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Short summary
Nutrient exchange at the ocean-ice interface is a key process to supply nutrients and support sea-ice algal growth in polar regions. Such fluxes depend on the characteristics of the flow under the ice, whether of smooth or turbulent nature. We developed and implemented a parameterization that accounts for flow regime in two sea-ice biogeochemical models. By enhancing nutrient fluxes, turbulence supports higher primary production, resulting in more than double the biomass accumulation.
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