Locally-orthogonal, unstructured grid-generation for general circulation modelling on the sphere

  title={Locally-orthogonal, unstructured grid-generation for general circulation modelling on the sphere},
  author={Darren Engwirda},
  • D. Engwirda
  • Published 28 November 2016
  • Environmental Science, Computer Science
  • ArXiv
Abstract. An algorithm for the generation of non-uniform, locally orthogonal staggered unstructured spheroidal grids is described. This technique is designed to generate very high-quality staggered Voronoi–Delaunay meshes appropriate for general circulation modelling on the sphere, including applications to atmospheric simulation, ocean-modelling and numerical weather prediction. Using a recently developed Frontal-Delaunay refinement technique, a method for the construction of high-quality… 

Topography-based local spherical Voronoi grid refinement on classical and moist shallow-water finite-volume models

Abstract. Locally refined grids for global atmospheric models are attractive since they are expected to provide an alternative to solve local phenomena without the requirement of a global

OceanMesh2D 1.0: MATLAB-based software for two-dimensional unstructured mesh generation in coastal ocean modeling

The various capabilities of the OceanMesh2D software are illustrated and its utility in realistic applications by producing high-quality, multiscale, unstructured meshes is demonstrated.

Applications of flexible spatial and temporal discretization techniques to a numerical weather prediction model

Numerical weather prediction is carried out by solving a set of governing partial differential equations (PDEs) based on fluid dynamics and thermodynamics principles, together with parameterizations

On the automatic and a priori design of unstructured mesh resolution for coastal ocean circulation models

Abstract This study investigates the design of unstructured mesh resolution and its impact on the modeling of barotropic tides along the United States East Coast and Gulf Coast (ECGC). A discrete

Global tide simulations with ICON-O: testing the model performance on highly irregular meshes

The global tide is simulated with the global ocean general circulation model ICON-O using a newly developed tidal module, which computes the full tidal potential. The simulated coastal M2 amplitudes,

MPAS‐Ocean Simulation Quality for Variable‐Resolution North American Coastal Meshes

Climate model components utilizing unstructured meshes enable variable resolution, regionally enhanced simulations within global domains. Here we investigate the relationship between mesh quality and

MPAS-Albany Land Ice (MALI): a variable-resolution ice sheet model for Earth system modeling using Voronoi grids

Abstract. We introduce MPAS-Albany Land Ice (MALI) v6.0, a new variable-resolution land ice model that uses unstructured Voronoi grids on a plane or sphere. MALI is built using the Model for



Multi-resolution unstructured grid-generation for geophysical applications on the sphere

Compared to existing techniques, it is shown that the Frontal-Delaunay approach typically produces grids with near-optimal element quality and smooth grading characteristics, while imposing relatively low computational expense.

Explicit Generation of Orthogonal Grids for Ocean Models

Several explicit methods are proposed for generating global orthogonal curvilinear grids for ocean modelling. The methods are based on the conformal properties of stereographic and Mercator map

ADMESH: An advanced, automatic unstructured mesh generator for shallow water models

This paper presents the development and application of a two-dimensional, automatic unstructured mesh generator for shallow water models called Admesh, and several meshes of shallow water domains created by the new mesh generator are presented.

A Multiscale Nonhydrostatic Atmospheric Model Using Centroidal Voronoi Tesselations and C-Grid Staggering

The formulation of a fully compressible nonhydrostatic atmospheric model called the Model for Prediction Across Scales–Atmosphere (MPAS-A) is described, using centroidal Voronoi meshes and a C-grid staggering of the prognostic variables to incorporate a split-explicit time-integration technique used in many existing meso- and cloud-scale models.

A new computational framework for multi‐scale ocean modelling based on adapting unstructured meshes

A new modelling framework is presented for application to a range of three‐dimensional (3D) multi‐scale oceanographic problems. The approach is based upon a finite element discretization on an

Multiscale mesh generation on the sphere

The method enables to import coastlines from different data sets and, consequently, to build meshes of domains with highly variable length scales and the results include meshes together with numerical simulations of various kinds.

Three-dimensional unstructured mesh ocean modelling