A new feature of the MIT GCM is the novel approach to gridding the sphere.
Extending the original suggestion of Sadourney, 1972, who proposed the
gnomonic projection, Rancic et al., 1995, proposed the conformal expanded
cube to grid the sphere nearly uniformly using a locally orthogonal curvilinear
|Here we briefly summarize the limitations of the conventional latitude-longitude grids used in many grid-point atmosphere and ocean models.|
|An example of the expanded cubic grids allow us to cover the entire globe, including the Artic Ocean which is sometimes filled in for the convenience of avoiding the converging meridians problem of regular lat-lon grids.|
|See what happens when we "splash" a free-surface model. An animation of a simple test of the dynamics on the cubic grid.|