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• an atmospheric model run at various resolutions appropriate to the forecast length: HRES for (Day0-Day10), ensemble (ENS) (for Day0-Day15), extended-range (for Day0-Day46), and seasonal forecast (for month0-month7 or month0-month13).
• an ocean wave model (ECWAM).
• an ocean model (NEMO) including a sea ice model, the Louvain-la-Neuve Sea Ice Model (LIM2).
• a land surface model (HTESSEL) including a lake model (FLake).
• a data analysis system (4D-VAR).
• perturbation techniques for generation of the ensembles.
  
  

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The coupled model configuration is used with:

• the ENS and HRES forecast HRES forecast (Day0 to Day10) twice daily based on 00UTC and 12UTC data.
• the ENS forecast (Day0 to Day15) twice daily based on 00UTC and 12UTC data.
• the Extended Range forecast (Day0 to Day46) once daily based on 00UTC data. 
• the Seasonal forecast (Month0 to Month7 once each month, Month0 to Month13 once each quarter) on first day of the month based on 00UTC data.  

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