National Centers for Environmental Prediction (NCEP)

 
 
 

Global Forecast System (GFS)	History of upgrades to GFS (previously known as AVN/MRF)  Links to Technical Procedures Bulletins (TPBs) providing detailed information) Most recent version of model documentation  Medium-range ensemble forecasting Documentation   Graphics Spaghetti diagrams Mean/spread diagrams for 6 most recent ensemble runs Evaluation of GFS, ensemble based QPF Ensemble verification (coming soon!) GDAS (Global Data Assimilation System) documentation
Regional Atmospheric Modeling Systems	WRF-NMM tutorial Description of operational Mesoscale Modeling Branch output grids (including ftp link) Mesoscale Modeling Branch FAQs Links to regional modeling system output datasets Short Range Ensemble Forecast (SREF) Regional Spectral Model (RSM) Rapid Update Cycle (RUC)
Ocean models	Link to operational ocean models Links to experimental ocean models
Climate models	Seasonal SST (ENSO) forecasts Seasonal atmospheric forecasts (based on ENSO forecast) for tropical, global, and U.S. domains