Decadal forecasts
Access multi-model ensemble percentiles of Canadian decadal forecasts produced by ECCC. Datasets of forecasted anomalies relative to the 1991-2020 climatology period are available for temperature and precipitation on annual and seasonal scales. ECCC decadal datasets are produced from WMO Lead Centre for Annual-to-Decadal Climate Prediction forecasts which are published each year. Please refer to the data licensing agreement in the technical user document where applicable.
Data are available for download at the following resolutions:
- Temporal resolution: available on seasonal and annual scales
- Spatial resolution: 1x1 degree grid
Additional resources
Commonly used terms
- Forecast
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A prediction or estimate of future events, often based on analysis of data and trends. For mid- to long-term temporal scales, they often assess changes in climate over time.
- Anomaly
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The difference between an observed climate variable (i.e., the average temperature in July) and its long-term average over a specified period. It can highlight unusual or significant changes in climate patterns.
- Ensemble
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A collection of climate model simulations, often used to produce future climate projections. By averaging the results from different models, users can gain a more robust and realistic understanding of the potential impacts of climate change.
- Climatology period
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A specific time frame used to calculate average climate conditions, often spanning 30 years. This period provides a baseline for comparing long-term climate trends and identifying anomalies.