Bc:zero-Gradient
- 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.