GEOS-S2S-1 Seasonal Forecast System

The GMAO produces experimental near real time climate forecasts with the GEOS-5 atmosphere-ocean general circulation model (AOGCM). These forecasts are provided to the North American Multi-Model Ensemble (NMME) prediction project, as well as to other national (IRI) and international (APCC) ensemble seasonal forecasting efforts. In addition, the ocean initial conditions for temperature and salinity are provided to the Real Time Multiple Ocean Reanalysis Intercomparison project to help assess the uncertainties in the subsurface ocean analyses. By providing the forecasts and analyses to the external community we are able to assess the quality of the GEOS-5 forecast system in the context of other state-of-the art systems and we benefit from having various external users providing a more comprehensive evaluation our system.

NOTE:
GEOS-S2S-1 was discontiued with the completion of the January 2018 forecast.

The new system is GEOS-S2S-2