09 Mar 2023
 | 09 Mar 2023
Status: this preprint is open for discussion.

The neXtSIM-DG dynamical core: A Framework for Higher-order Finite Element Sea Ice Modeling

Thomas Richter, Véronique Dansereau, Christian Lessig, and Piotr Minakowski

Abstract. The ability of numerical sea ice models to reproduce localized deformation features associated with fracture processes is key for an accurate representation of the ice dynamics and of dynamically coupled physical processes in the Arctic and Antarctic. Equally key is the capacity of these models to minimize the numerical diffusion stemming from the advection of these features, to ensure that the associated strong gradients persist in time, without the need to unphysically re-inject energy for re-localization. To control diffusion and improve the approximation quality, we present a new numerical core for the dynamics of sea ice that is based on higher order finite element discretizations for the momentum equation and higher order discontinuous Galerkin methods for the advection. The mathematical properties of this core are discussed and a detailed description of an efficient shared memory parallel implementation is given. In addition, we present different numerical tests and apply the new framework to a benchmark problem to quantify the advantages of the higher order discretization. These tests are based on Hibler’s viscous-plastic sea ice model, but the implementation of the developed framework in the context of other physical models reproducing a strong localization of the deformation are possible.

Thomas Richter et al.

Status: open (until 04 May 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-391', Sergey Danilov, 28 Mar 2023 reply

Thomas Richter et al.

Thomas Richter et al.


Total article views: 179 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
134 38 7 179 3 3
  • HTML: 134
  • PDF: 38
  • XML: 7
  • Total: 179
  • BibTeX: 3
  • EndNote: 3
Views and downloads (calculated since 09 Mar 2023)
Cumulative views and downloads (calculated since 09 Mar 2023)

Viewed (geographical distribution)

Total article views: 166 (including HTML, PDF, and XML) Thereof 166 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
Latest update: 29 Mar 2023
Short summary
Sea ice covers not only the pole regions but affects the weather and climate globally. For example, its white surface reflects more sun light than land. The oceans around the poles are therefore kept cool, which affects the circulation in the oceans worldwide. Simulating the behavior and changes in sea ice on a computer is, however, very difficult. We propose a new computer simulation that better models how cracks in the ice change over time and show this by comparing to other simulations.