Skip Navigation Links 
NOAA logo - Click to go to the NOAA homepage National Weather Service   NWS logo - Click to go to the NWS homepage
National Centers for Environmental Prediction
Navigation Bar Left Cap
Navigation Bar End Cap

Home > FNMOC Ensemble documentation

The Fleet Numerical Meteorology and Ocenography Ensemble Forecast System (FNMOC EFS) uses the Ensemble Transform technique to produce twenty perturbed initial conditions for twenty forecasts made using the Navy Operational Global Atmospheric Prediction System (NOGAPS). The ensemble transform is currently solved over 5 latitude bands and includes an analysis error estimate derived from the Navy Atmospheric Variational Data Assimilation System (NAVDAS). The NOGAPS model used for the ensemble forecasts has spectral resolution T119 (about 90 km) horizontally and 30 vertical levels. Forecasts are made at 6 hour increments from 0 to 384 forecast hours. Forecasts are made twice per day for 00Z and 12Z. For further information contact Fleet Numerical Meteorology and Oceanography Center.

NOAA/ National Weather Service
National Centers for Environmental Prediction
5830 University Research Court
College Park, Maryland 20740
NCEP Internet Services Team
Privacy Policy
About Us
Career Opportunities
Page last modified: Monday, 10-Jan-2011 18:43:06 UTC