Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 15
Articles | Volume 19, issue 15
https://doi.org/10.5194/gmd-19-7169-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-7169-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 15
Development and technical paper
 | 
05 Aug 2026
Development and technical paper |  | 05 Aug 2026

Design and implementation of a Newtonian relaxation scheme in the NOAA GFDL Sea Ice Model (SIS2)

Dmitry S. Dukhovskoy, Theresa Cordero, Katherine Hedstrom, Michael Alexander, Michael Jacox, Robert Hallberg, Matthew Harrison, and Jessie Liu

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Short summary
Regional sea ice models often struggle to represent sea ice near model domain boundaries, where errors can accumulate over time. We implemented and tested a method that gradually adjusts simulated sea ice toward prescribed conditions while preserving a realistic evolution of the ice cover. Experiments in the Arctic and Northeast Pacific show improved sea ice simulations and ocean surface conditions, providing a practical tool for regional forecasting and research applications.
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Development and deployment of regional ocean configurations...