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• the atmospheric forecast model at all configurations (medium range ENSensemble, extended range ENSensemble, Seasonal),
• the dynamic ocean model NEMO.   (Note: the IFS analysis and the short range forecasts that are part of the IFS analysis cycle are not coupled with ECWAM).
  

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Output from ECWAM

ECWAM is run as:

• Control10ENS-WAM twice  twice? daily giving forecasts to Day10 Day15 associated with CONTROL-10 of 10-day medium range ENS ensemble based on 00UTC and 12UTC data times.   Global coverage on 00.12525^o x 0.12525^o latitude-longitude grid .(Ocean wave model ensemble 15-day forecast (Set IV ENS-WAM).
• Extended   ????? ENS-WAM  twice daily giving extended forecasts from Day16 to Day15 Day46 associated with ENS based the extended range forecasts based on 00UTC and 12UTC data times.   Global  Global coverage 0.255^o x 0.255^o latitude-longitude grid .Extended 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(Atmospheric Model Ensemble extended forecast (Set VI - ENS extended), section VI-v-c).
• 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 (Atmospheric model Seasonal 7-month forecast (Set V - SEAS), section V-v-e).
• 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^o latitude-longitude grid (Atmospheric model Seasonal 7-month forecast (Set V - SEAS), section V-v-e).

       Output is in the form of wave and swell height, direction and period. Wave  Also available are wave energy flux, mean direction and magnitude (important for assessment of the impact of the waves on coastlines and offshore structures) is also available. 

Graphical and chart presentation of wave forecasts

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• Definitive information on the ECMWF WAVE MODEL products and availability can be found in the the Catalogue of ECMWF real-time products (Set IV).  NB: No or degraded access to this dataset at times between September and December 2021 during migration to Bologna).
• Read an in depth view of the structure of ECWAM which gives a description of the theory behind the ECWAM model.
• Read about techniques regarding satellite measurement of wave height.Read more on ocean waves at ECMWF and download the lecture notes.
• Read more on ocean wave modelling and model output parameters.
• Fact sheet - Ocean wave forecasting.
• ECMWF - Lead centre for wave forecast verification and information on national models and wave verification results. Model output parameters and full list of available ECWAM output.
• Watch a comprehensive lecture on ocean wave forecasting at ECMWF or air-sea Interaction and earth system modelling.

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