First operational forecast 500hPa chart was done in July 1963. A Baroclinic 4 level model was installed on an IBM 360-65. A Baroclinic 7 level primitive equation model was installed on Cyber 7600. New objectiveanalysis was introduced. 15 Global OA operated in hemispheric mode.
Output is kept on a variable grid.
The RFE model is replaced by GEM regional. No regional analysis cycle. The regional GEM model is initialized with the global analysis on 16 pressure levels. The OI is replaced by the 3D-VAR scheme. September 24 Re-introduction of the regional analysis cycle.