JIGSAW-GEO: Grid-generation for general circulation modelling on the sphere (Version 1.0.1)

JIGSAW-GEO is an algorithm for the generation of non-uniform, locally-orthogonal, staggered unstructured grids for geophysical modelling on the sphere. Typical applications include large-scale atmospheric simulation, ocean-modelling and numerical weather predicition. JIGSAW-GEO is designed to generate high-quality staggered Voronoi/Delaunay dual meshes using a combination of Frontal-Delaunay refinement and hill-climbing type mesh optimisation.

JIGSAW-GEO is typically able to produce the very high-quality grids required by a number of geophysical solvers (MPAS, SUNTANS, etc), generating highly optimised Delaunay-based meshes that are locally-orthogonal, centroidal and well-centred.

JIGSAW-GEO is a stand-alone mesh generator written in C++, based on the general-purpose meshing package JIGSAW. This toolbox provides a MATLAB / OCTAVE based scripting interface, including file I/O, mesh visualisation and post-processing facilities.

JIGSAW-GEO is currently available for 64-bit Windows, Mac and Linux platforms.

This is an Initial release, with additional demo problems and a (slightly) improved MATLAB / OCTAVE interface compared to JIGSAW-GEO-1.0.0. See Engwirda, D., (2017): "JIGSAW-GEO (1.0): Locally-orthogonal staggered unstructured grid-generation for general circulation modelling on the sphere" (https://arxiv.org/abs/1611.08996).