Hierarchical models (SPMODEL) We have now 1D KdV equation 2D Channel models of barotoropic and shallow water with several boundary conditions Convection models of several boundary conditions Equatorial β plane Barotropic and Shallow water spherical model 3D Boussinesq Fluid in a Spherical Shell MHD in a Spherical Shell We are going to test SPMODEL framework for developing a GCM. → DCPAM