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.
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.
the Creative Commons Attribution 4.0 License.
Model description paper
| 
26 Aug 2026
Model description paper |
| 26 Aug 2026
| 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
CORRESPONDING AUTHOR
University of Bremen, Institute of Environmental Physics (IUP), Bremen, Germany
Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany
Norwegian Polar Institute, Tromsø, Norway
Karley Campbell
The Arctic University of Tromsø (UiT), Tromsø, Norway
Sebastien Moreau
Norwegian Polar Institute, Tromsø, Norway
Pedro Duarte
Norwegian Polar Institute, Tromsø, Norway
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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.
Nutrient exchange at the ocean-ice interface is a key process to supply nutrients and support...
