Description

The Global Ensemble Wave Prediction System (GEWPS) uses the third generation spectral wave model WaveWatch III® (WW3) to arrive at probabilistic predictions of wave elements from the current day out to 16 days into the future. The probabilistic predictions are based on 20 ensemble members and a control member that are forced by the 10 meters winds from the Global Ensemble Prediction System (GEPS). The GEPS forecast is a coupled atmosphere-ice-ocean model, its sea ice forecast is used by the GEWPS to dampen or suppress wave growth in areas covered respectively with 25% to 75% and more than 75% ice. WW3 (WAVEWATCH III® Development Group, WW3DG 2019) 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.

Resources

Name	Format	Description	Link
MSC Datamart AMQP	GRIB2		amqps://dd.meteo.gc.ca/*.WXO-DD.model_gewps.#
MSC Datamart AMQP	GRIB2		amqps://dd.weather.gc.ca/*.WXO-DD.model_gewps.#
MSC Datamart	GRIB2		https://dd.meteo.gc.ca/today/model_gewps/
MSC Datamart	GRIB2		https://dd.weather.gc.ca/today/model_gewps/
MSC Open Data documentation	HTML		https://eccc-msc.github.io/open-data/msc-data/nwp_gewps/readme_gewps_en
MSC Open Data documentation	HTML		https://eccc-msc.github.io/open-data/msc-data/nwp_gewps/readme_gewps_fr

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