Global Deterministic Storm Surge Prediction System

The Global Deterministic storm Surge Prediction System (GDSPS) produces water level forecasts using a modified version of the NEMO ocean model (Wang et al. 2021, 2022, 2023). It provides 240 hours forecasts twice per day on a 1/12° resolution grid (3-9 km). The model is forced by the 10 meters winds, sea level pressure, ice concentration, ice velocity and surface currents from the Global Deterministic Prediction System (GDPS). The three dimensionnal ocean temperature and salinity fields of the model are nudged to values provided by the Global Ice-Ocean Prediction System (GIOPS) and the GDPS. During the post-processing phase, storm surge elevation (ETAS) is derived from total water level (SSH) by harmonic analysis using t_tide (Foreman et al. 2009).

Data and Resources

Additional Info

Field	Value
Last Updated	April 17, 2026, 21:15 (UTC)
Created	April 17, 2026, 21:15 (UTC)
contact_email	ECWeather-Meteo@ec.gc.ca
contact_person	{"en": "Government of Canada; Environment and Climate Change Canada; Meteorological Service of Canada", "fr": "Gouvernement du Canada; Environnement et Changement climatique Canada; Service météorologique du Canada"}
criticality_level	[]
data_dictionary	["climatology_meterology_atmosphere"]
geographic_scope	[]
open_canada_collection	fgp
open_canada_date_published	2023-09-05 00:00:00
open_canada_keywords	{"en": ["Storm surge", "Sea surface height", "Prediction", "Global", "Deterministic", "Forecasting", "Storms", "Water", "Seas", "Provide Weather Information Products and Services", "Deliver Weather Products and Services to Clients", "Meteorological Service of Canada", "Weather and Environmental Operations", "Unclassified", "International"], "fr": ["Onde de tempête", "Hauteur de la surface de la mer", "Prévision", "Global", "Déterministe", "Prévision", "Tempête", "Eau", "Mer", "Fournir des services et des produits d'information sur les conditions météorologiques", "Livrer des produits et des services météorologiques aux clients", "Service météorologique du Canada", "Opérations météorologiques et environnementales", "Non Classifié", "Internationale"]}
open_canada_subject	["nature_and_environment"]
sensitivity_level	unrestricted
title_fr	Système global de prévision déterministe d'onde de tempête
update_frequency	continual