Poster Title	JIGSAW: Multi-resolution Unstructured Mesh Generation for MPAS
Authors	Darren Engwirda (Unlicensed), Mark Petersen, Phillip Wolfram (Unlicensed), Luke Van Roekel (Unlicensed), Matt Hoffman, Xylar Asay-Davis
First Author	Darren Engwirda (Unlicensed)
Session Type	E3SM Sessision
Session ID	E4
Submission Type	Poster
Group	Cyrosphere
Experiment
Poster Link

Abstract

The generation of high-quality, multi-resolution unstructured grids for MPAS-O/SI is a core requirement for upcoming E3SM science campaigns, allowing model resolution to be tailored to the physics and areas of interest associated with particular studies. The generation of such meshes is a non-trivial task! Here, we describe recent work on the development and use of JIGSAW; a new unstructured mesh generation package designed to assemble complex two- and three-dimensional tessellations suitable for multi-resolution MPAS-O/SI configurations. A particular advantage of JIGSAW is its ability to rapidly generate very high-quality 'generalised' Delaunay triangulations and Voronoi-type tessellations optimised for high-resolution MPAS-O/SI studies. We present details of JIGSAW's underlying mesh generation and optimisation algorithms, applicability to a range of global, regional and coastally-refined model configurations, and outline its integration into MPAS-O/SI workflows.

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