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The ECMWF Ocean Wave Model (ECWAM) describes the development and evolution of wind generated surface waves and their height, direction and period.  Its domain extends across the full globe. 

ECWAM is coupled to:

• the atmospheric forecast model at all configurations (

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• medium range ENS, extended range ENS, Seasonal),
• the dynamic ocean model NEMO.   (

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• Note: the IFS analysis and the short range forecasts that are part of the IFS analysis cycle are not coupled with ECWAM).
  

ECWAM is solely concerned with ocean wave forecasting and does not model the ocean itself: dynamical modelling of the ocean is done by NEMO.

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Output from ECWAM

ECWAM is run as:

• HRES*Control10-WAM twice  twice daily giving forecasts to Day10 associated with HRES* based Control10 of 10-day medium range ENS based on 00UTC and 12UTC data times. Global coverage on 0.125^o x 0.125^o latitude-longitude grid.  ?????
• ENS-WAM twice daily giving forecasts to Day15 associated with ENS based on 00UTC and 12UTC data times.  Global coverage 0.25^o x 0.25^o latitude-longitude grid.
• ENS-WAM twice weekly (Mondays & Thursdays) giving extended forecasts from Day15 to Day46 associated with the extended range forecasts based on 00UTC data times.  Global coverage 0.5^o x 0.5^o latitude-longitude grid.  ENS-WAM daily giving extended forecasts from Day15 to Day46 associated with the extended range forecasts based on 00UTC data times.  Global coverage 0.5^o x 0.5^o latitude-longitude grid.
• SEAS-WAM monthly for forecasts to 7 months ahead associated with the seasonal forecast model (System 5).  Global coverage 1.0^o x 1.0^o latitude-longitude grid.
• SEAS-WAM quarterly for forecasts to 1 year ahead associated with the seasonal forecast model (System 5).  Global coverage 1.0^o x 1.0^o latitude-longitude grid.

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