2013年12月1日 · In this paper, we explain the motivation for and describe the construction of a family of optimized IHP grids. We discuss grid generation and optimization, the convergence of three important operators as the grid spacing is reduced, …

2021年11月17日 · The spherical cell decomposition method has been introduced to iteratively update the grid to minimize the spherical transportation cost, achieving an overall optimization of the spherical icosahedral grid.

Icosahedral grids In this chapter, we describe an icosahedral grid method for spherical grid dis-cretization of global atmospheric models. An icosahedral grid is applied to a shallow-water model in this chapter, and application to a global three-dimensional model …

2017年12月13日 · The outputs (vorticity, divergence, and height) of STSWM are first recovered to the grid point space with a full truncation, and then interpolated to different-resolution icosahedral meshes using a first-order conservative remapping method provided by the Climate Data Operators (CDO; Schulzweida, 2016). Different interpolation methods may lead ...

Numerical grid imprinting errors have often been observed in global atmospheric models on icosahedral grids. In this paper we analyse the sources of grid imprinting error related to the usual finite volume discretization of the divergence operator.

2022年4月1日 · We describe a new algorithm to create a geodesic grid using slicing planes from a projection point to slice an icosahedral section of a sphere into a quasi-uniform grid of triangles with near equal area. The new algorithm is an improvement compared to a frequently used classical system that is based on bisecting the ribs of an icosahedron.

2022年4月1日 · We describe a new algorithm to create a geodesic grid using slicing planes from a projection point to slice an icosahedral section of a sphere into a quasi-uniform grid of triangles with near equal area. The new algorithm is an improvement compared to a frequently used classical system that is based on bisecting the ribs of an icosahedron. The ...

An icosahedral-hexagonal grid on the two-sphere is created by dividing the faces of an icosahedron and projecting the vertices onto the sphere. This grid and its Voronoi tessellation have several desirable features for numerical simulations of physical processes on the sphere.

In this paper, we explain the motivation for and de-scribe the construction of a family of optimized IHP grids. We discuss grid generation and optimization, the con-vergence of three important operators as the grid spacing is reduced, and the solution of global elliptic problems.

This study developed a general grid transformation method for a horizontal grid system on a sphere. The method incorporates the currently used Schmidt transformation method, as well as a new technique