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TOC > MSC data > GDPS

Data and Products of the Global Deterministic Prediction System

The Global Deterministic Prediction System (GDPS) is a coupled atmosphere (GEM), ocean and sea ice (NEMO-CICE) deterministic numerical weather prediction model. Forecasts are carried out twice a day for 10 days lead time. The geographical coverage is global on a native Yin-Yang grid at 15 km horizontal resolution. Data is available for 33 vertical levels and interpolated on a global latitude-longitude uniform grid with 0.2 degree horizontal resolution. Variables availability in number and time frequency is a function of forecast lead time.


How to access the data

This data is available from the MSC GeoMet API / web services and on the MSC Datamart data server respectively:

An overview and examples to access and use the Meteorological Service of Canada's open data is available. Example of a web map configured to display the GDPS.DIAG_NW_PT1H layer served by MSC GeoMet:


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

MSC Open Data Service Usage Policy

The MSC Open Data Service Usage Policy determines what constitutes an acceptable use of MSC Open Data services and provides users best practices for optimal use.



List and links to the products available for this dataset:

Forecast maps

Analysis maps

Technical documentation


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