Op:div
- latlon3d
finite_differencefinite_volumelatlon
Dadvectiondivfluxlimiterreconstructvarcoeff_laplacian
inflowno-fluxperiodicrobinzero-gradientzero_gradient
Three-dimensional longitude-latitude-level grid: the 2-D grids/latlon horizontal mesh extended with a vertical `lev` axis, for 3-D tracer transport on a lat-lon model such as GEOS-Chem Classic.
- mpas
finite_volumempas
divgradlaplacian
none
MPAS unstructured spherical centroidal-Voronoi (icosahedral) C-grid on the unit sphere: NCELLS Voronoi cells, NEDGES edges, NVERTICES triangle vertices, with cell valence bounded by MAXEDGES (on a closed sphere the Euler relations give NEDGES = 3*(NCELLS - 2) and NVERTICES = 2*(NCELLS - 2), but the three counts stay independent metaparameters so planar or open meshes can reuse the file).