30/05/06 12Z: GFS Ensembles now have 14 members, 4 times daily. Each cycle now has its own control member. Resolution is T126L28 through 384 h. New ensemble transform method used to generate members.

22/08/06 12Z: (See http://www.emc.ncep.noaa.gov/gc_wmb/...on/GFS06.ppt):
New orography&land-sea mask, improved snow analysis, and new ozone physics.
New glacial ice and fix error in downward LW radiation at earth's surface.
Infrastructure changes (e.g. Full ESMF compliance).