Data Collection Methodology (French, PDF)

Data Collection Methodology: French PDF file. From Environment and Climate Change Canada, updated Sep 2026. View metadata, licence and the direct download on CanQuery.

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Publisher-reported update

2026-09-01

Seasonal and annual trends of mean surface air temperature change (degrees Celsius) for 1948-2016 based on Canadian gridded data (CANGRD) are available at a 50km resolution across Canada. Temperature trends represent the departure from a mean reference period (1961-1990). CANGRD data are interpolated from adjusted and homogenized climate station data (i.e., AHCCD datasets). Homogenized climate data incorporate adjustments to the original station data to account for discontinuities from non-climatic factors, such as instrument changes or station relocation.

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