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Data and Products of the Global Deterministic Wave Prediction System (GDWPS)

The Global Deterministic Wave Prediction System (GDWPS) produces wave forecasts using the third generation spectral wave model WaveWatch III®. The model is forced by the 10 meters winds from the Global Deterministic Prediction System. In addition, a sea ice forecast from the Global Ice-Ocean Prediction System (GIOPS) is used by the model to dampen or suppress wave growth in areas covered respectively with 25% to 75% and more than 75% ice.

The WW3 (Tolman and the WAVEWATCH III® Development Group 2014) is a third generation spectral wave prediction model that solves the evolution of the energy balance equation for the 2-D wave energy spectrum without any prior assumptions on the shape of the spectrum. The WW3 model has been implemented by a growing number of national operational forecasting centres over the last several years.


How to access the data

These data are available on the data server services MSC Datamart and the web services MSC GeoMet respectively :

An overview and examples to access and use the Meteorological Service of Canada's open data is available.


The end-user licence for Environment and Climate Change Canada's data servers specifies the conditions of use of these data.



Technical documentation

Change log

The chronology of changes to the Global Deterministic Wave Prediction System (GDWPS) is available here.