DOE OSTI · 2532341
A nonhydrostatic formulation for MPAS-Ocean
Abstract
The Model for Prediction Across Scales-Ocean (MPAS-Ocean) is an open-source, global ocean model and is one component of a family of climate models within the MPAS framework, including atmosphere, sea-ice, and land-ice models. Here, in this work, a new formulation for the ocean model is presented that solves the nonhydrostatic, incompressible Boussinesq equations on an unstructured, staggered, z-level grid. The introduction of this nonhydrostatic capability is necessary for the resolution of internal wave dynamics and large eddy simulations. Compared to the standard, hydrostatic formulation, a nonhydrostatic pressure solver and a vertical momentum equation are added, where the PETSc (Portable Extensible Toolkit for Scientific Computation) library is used for the inversion of a large sparse system for the nonhydrostatic pressure. Numerical results on a stratified seiche, internal solitary wave, overflow and lock-exchange test cases are presented, and the parallel efficiency of the code is evaluated using up to 1024 processors.
Explore related subjects
Keep this discovery
Explore connections, maps & timelines
Calandrini, Sara [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000178444048), Engwirda, Darren [Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, ACT (Australia)] (ORCID:0000000233799109), Roekel, Luke Van [Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)] (ORCID:0000000314185686). 2025-03-08. A nonhydrostatic formulation for MPAS-Ocean. https://doi.org/10.1016/j.ocemod.2025.102527
Cite the original work for its findings. Save a collection to share your selection of sources.