Portable University Model of the Atmosphere
The Portable University Model of the Atmosphere (PUMA), an atmospheric circulation model consisting of a dynamical core based on the Primitive Equations with simple parametrisations for friction and diabatic heating (Rayleigh friction, Newtonian cooling).
PUMA is part of the Planet Simulator (PlaSim) package which can be downloaded here
In addition you may download:
The Users Guide
two example animations: (10 days z500 in T1365 resolution) (potential vorticity dynamics in T170 resolution)