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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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Ensemble structure

ECWAM evaluates the 2-dimensional surface wave spectrum for both oceanic and coastal (but not inshore) waters.  The wave information is output in 36 directions of propagation and 29 wave frequencies at 6hr intervals.  These describe the extent, severity and timing of the forecast wave energy and highlight risk areas.

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Note: ECMWF uses LIM2. This is an earlier version of the Louvain-la-Neuve sea ice model that is currently available (Version 3.6)

Wave

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data assimilation

• ECWAM assimilates space-borne altimeter wave height data.
• ECWAM does not assimilate buoy wave data; instead, these data serve as an independent check on the quality of modelled wave parameters.

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