The Elastic–Viscous–Plastic Sea Ice Dynamics Model in General Orthogonal Curvilinear Coordinates on a Sphere—Incorporation of Metric Terms

Elizabeth C. Hunke, John K. Dukowicz
2002 Monthly Weather Review  
A new discretization for the elastic-viscous-plastic (EVP) sea ice dynamics model incorporates metric terms to account for grid curvature effects in curvilinear coordinate systems. A fundamental property of the viscousplastic ice rheology that is invariant under changes of coordinate system is utilized; namely, the work done by internal forces, to derive an energy dissipative discretization of the divergence of the stress tensor that includes metric terms. Comparisons of simulations using an
more » ... er EVP numerical model with the new formulation highlight the effect of the metric terms, which can be significant when ice deformation is allowed to affect the ice strength.
doi:10.1175/1520-0493(2002)130<1848:tevpsi>;2 fatcat:fhhahyofrzeq5ljdwjp4an7k5m