Published in

European Geosciences Union, Geoscientific Model Development, 6(8), p. 1747-1761, 2015

DOI: 10.5194/gmd-8-1747-2015

Copernicus Publications, Geoscientific Model Development Discussions, 2(8), p. 855-896

DOI: 10.5194/gmdd-8-855-2015

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Finite-Element Sea Ice Model (FESIM), version 2

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract. 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.