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TOC > MSC data > GDPS

Data and Products of the Global Deterministic Prediction System

The Global Deterministic Prediction System (GDPS) performs physical calculations to produce deterministic forecasts of atmospheric elements from the present day to 10 days in the future. Elements of the atmosphere include temperature, precipitation, cloud cover, wind speed and direction, and humidity. This product contains the raw numerical results of these calculations. The geographical coverage is global. The horizontal spatial resolution of the data is 15 km. Data is available for 33 vertical levels. The forecasts are carried out twice a day.


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.


The metadata of the Global Deterministic Forecasting System are available on the Open Government Portal.


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 in the changelog.