The FIM Global Model

General Weather Discussions and Analysis
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Ptarmigan
Statistical Specialist
Statistical Specialist
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Joined: Wed Feb 03, 2010 7:20 pm
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The FIM Global Model
http://fim.noaa.gov/

A unique combination of 3 numerical design features Icosahedral horizontal grid, mostly hexagons except for 12 pentagons ("I" in FIM) Isentropic-sigma hybrid vertical coordinate, adaptive, concentrates around frontal zones, tropopause, similar to RUC model ("F" for Flow-following in FIM) Finite-volume horizontal transport (Also under "F", for "finite-volume" in FIM).

It is just as accurate as the EURO.
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