RECHERCHE EN PREVISION NUMERIQUE
RECHERCHE EN PREVISION NUMERIQUE
The GEM model in its uniform resolution configuration is run
twice daily in the Canadian Meteorological Center (CMC) operations.
The GEM model in this configuration drives the 3D
variational data assimilation cycle and perform the medium
range weather forecasts for Canada.
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for operational products.
The GEM model is run twice daily in its variable-resolution
configuration for 48 hours integrations. The uniform resolution
portion of the grid covers North America and its adjascent waters.
This version of the model is initiated using a 3D variational
(3D-Var) analysis
system.
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for operational products.
Given the multi-scale capability of the GEM model and the
need for higher resolution forecasts over Canada, the CMC runs
an experimental version of the model which has a resolution higher
than the operational regional version of the same model. Two
runs of this model are initiated every day, one having its region
of interest centered over the western part of the country and
the other over the eastern part. This version of the model is
to be used as a test bed for new parameterizations, improved
high resolution surface parameters, etc. in the context of a
better resolved topography and land-sea mask.
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for the latest forecasts (ECONET only).