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S. Danilov; Q. Wang; R. Timmermann; N. Iakovlev; D. Sidorenko; M. Kimmritz; T. Jung; J. Schröter (2015)
Publisher: Copernicus Publications
Journal: Geoscientific Model Development
Languages: English
Types: Article
Subjects: Q, Science, QE1-996.5, Geography (General), Geology, G1-922
The Finite-Element Sea Ice Model (FESIM), used as a component of the Finite-Element Sea ice Ocean Model, is presented. Version 2 includes the elastic-viscous-plastic (EVP) and viscous-plastic (VP) solvers and employs a flux corrected transport algorithm to advect the ice and snow mean thicknesses and concentration. The EVP part also includes a modified approach proposed recently by Bouillon et al. (2013), which is characterized by an improved stability compared to the standard EVP approach. The model is formulated on unstructured triangular meshes. It assumes a collocated placement of ice velocities, mean thicknesses and concentration at mesh vertices, and relies on piecewise-linear (P1) continuous elements. Simple tests for the modified EVP and VP solvers are presented to show that they may produce very close results provided the number of iterations is sufficiently high.
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