Stan Benjamin


“Development and evaluation of an isentropic icosahedral global model – FIM”

What GR Meteo Colloquium UG Homepage Tarbell Lecture in Meteorology
When Sep 17, 2009
from 04:00 pm to 05:00 pm
Where 112 Walker Building
Contact Name Lynn Persing
Contact email
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NOAA/ESRL scientists have developed a relatively new global model (FIM – Flow-following finite-volume Icosahedral Model) including use of the adaptive isentropic-sigma hybrid vertical coordinate successful with the RUC model, accurate finite-volume horizontal advection, and use of an icosahedral horizontal grid. ESRL is collaborating with NCEP/EMC toward use of the FIM model as part of the NCEP global model ensemble.

The grid structure, numerics, and physics in the FIM will be described, along with the evolution of the FIM, especially over the last 2 years. This will includes comparisons between isentropic-sigma and sigma versions of FIM, and between the FIM and NCEP GFS using examples and global and regional measures. Results will also be presented for tropical cyclone forecasting using FIM at 30km, 15km, and recently, 10km horizontal resolution initialized with both GDAS-GSI-3dvar and ensemble Kalman filter assimilation as part of the NOAA Hurricane Forecast Improvement Project.

ESRL collaborates with NCEP to include the FIM within the NCEP global ensemble forecast system. Efforts are well underway to evolve the FIM toward a full coupled atmosphericocean system with inline chemistry (using WRF physics and chemistry modules), and to develop a non-hydrostatic global icosahedral model.

Terry Tarbell and his wife Carmen established the Tarbell Endowment in Meteorology in 1999 in order to support lectures by outstanding scholars in meteorology. Terry received his M.S. and Ph.D. degrees from Penn State Meteorology in 1972 and 1979, respectively. He is currently an executive at Stinger Ghaffarian Technologies (SGT).

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