title: Yin−Yang grid and geodynamo simulation

author: Akira Kageyama

abstract:

For geophysical simulations in the spherical geometry, a family of overset grids named Yin−Yang is proposed. The
Yin−Yang grid is based on the dissection of a spherical surface into two identical (exactly the same shape and size)
subregions. Each subregion of a sphere is patched by the low-latitude part of the usual latitude−longitude grid. The two
identical component grids are combined in a complemental way to cover a spherical surface with partial overlap on
their borders. High performance of the Yin−Yang grid on a massively parallel computer is demonstrated by an
application to geodynamo simulation.