Flow-following, finite-volume Icosahedral Model: Difference between revisions

Revision as of 07:16, 25 November 2017

Revision as of 07:16, 25 November 2017

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In November 2016, the ESRL announced it was no longer pursuing the FIM as a replacement for the GFS and would be instead developing the FV3, which uses some of the FIM's principles except on a square grid. The FIM will continue to be run for experimental purposes until FV3 commences. The FIM will also be upgraded with some of the same features as FV3 (retaining the icosahedral grid) and coupling to examine the use of the model in the longer ranges (on the scale of one month, a scale currently only served by the [[Climate Forecast System]]).

The FIM runs as a multiscale model, with a suffix number indicating the model's horizontal resolution. FIM7 operates at a spatial resolution of approximately 60 km, FIM8 at 30 km, FIM9 at 15km15 km and FIM9.5 at 10km10 km. Each scale runs on a temporal resolution of 6-hour steps. As of 2017, only the FIM7 (running out 10 days) and FIM8 (running out 14 days) continue to be run regularly.

==External links==