Articles | Volume 11, issue 11
Geosci. Model Dev., 11, 4359–4382, 2018
https://doi.org/10.5194/gmd-11-4359-2018

Special issue: The Firedrake automatic code generation system

Geosci. Model Dev., 11, 4359–4382, 2018
https://doi.org/10.5194/gmd-11-4359-2018

Model description paper 30 Oct 2018

Model description paper | 30 Oct 2018

Thetis coastal ocean model: discontinuous Galerkin discretization for the three-dimensional hydrostatic equations

Tuomas Kärnä et al.

Model code and software

thetisproject/thetis: Thetis coastal ocean model T. Kärnä, S. Kramer, L. Mitchell, and D. A. Ham https://doi.org/10.5281/zenodo.1407181

Software used in 'Thetis coastal ocean model: discontinuous Galerkin discretization for the three-dimensional hydrostatic equations' zenodo/Firedrake https://doi.org/10.5281/zenodo.1407898

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Short summary
Unstructured meshes are attractive for coastal ocean modeling, as they allow more accurate representation of complex coastal topography. Unstructured mesh models are, however, often perceived as slow and inaccurate. We present a novel discontinuous Galerkin ocean model: Thetis. We demonstrate that the model is able to simulate baroclinic ocean flows with high accuracy on a triangular prismatic mesh. This work paves the way for highly accurate and efficient three-dimensional coastal ocean models.