Implementation of a brittle sea ice rheology in an Eulerian, finite-difference, C-grid modeling framework: impact on the simulated deformation of sea ice in the Arctic

Brodeau, Laurent; Rampal, Pierre; Ólason, Einar; Dansereau, Véronique

doi:https://doi.org/10.5194/gmd-17-6051-2024

Articles | Volume 17, issue 15

https://doi.org/10.5194/gmd-17-6051-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue:

Nucleus for European Modelling of the Ocean - NEMO

https://doi.org/10.5194/gmd-17-6051-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 15

Development and technical paper

|

15 Aug 2024

Development and technical paper |

| 15 Aug 2024

Implementation of a brittle sea ice rheology in an Eulerian, finite-difference, C-grid modeling framework: impact on the simulated deformation of sea ice in the Arctic

Laurent Brodeau, Pierre Rampal, Einar Ólason, and Véronique Dansereau

Data sets

SI3 sea-ice hourly output for SI3-BBM and SI3-default Pan-Arctic simulations (Brodeau et al., 2024, final version) Laurent Brodeau https://doi.org/10.5281/zenodo.11582103

NEMO/SAS-SI3 setup, forcing and output for SI3-BBM and SI3-default idealized "cyclone" simulations (Brodeau et al., 2024, final version) Laurent Brodeau https://doi.org/10.5281/zenodo.11615982

Model code and software

NEMO release version 4.2.2 The NEMO team https://doi.org/10.5281/zenodo.11551599

brodeau/bbm4si3: 1.1.0 (1.1.0) Laurent Brodeau https://doi.org/10.5281/zenodo.11581840

brodeau/sitrack: 1.0 Laurent Brodeau https://doi.org/10.5281/zenodo.10457918

brodeau/mojito: 1.0 (1.0) Laurent Brodeau https://doi.org/10.5281/zenodo.10457924

Short summary

A new brittle sea ice rheology, BBM, has been implemented into the sea ice component of NEMO. We describe how a new spatial discretization framework was introduced to achieve this. A set of idealized and realistic ocean and sea ice simulations of the Arctic have been performed using BBM and the standard viscous–plastic rheology of NEMO. When compared to satellite data, our simulations show that our implementation of BBM leads to a fairly good representation of sea ice deformations.