CanHomT V3.1: Canadian Homogenized Daily Temperature Data for Climate Trend Analysis

780 Canadian weather stations provide daily maximum, minimum, and mean temperature series extended through 2023. Environment and Climate Change Canada developed this dataset for climate trend analysis, with key enhancements including both original and adjusted data for improved traceability. The homogenization process uses parallel observations and quantile-matching adjustments to correct for non-climatic changes.

Use Cases

• Analyzing long-term warming trends across Canada based on homogenized daily temperature series.
• Studying changes in temperature distribution and variance using quantile-matching adjusted data.
• Monitoring climate change impacts at specific locations based on data from 776 distinct stations.
• Evaluating the effect of observing-time changes on minimum temperature records since July 1961.
• Assessing data uncertainty in climate records using the provided original and adjusted data flags.

Strengths

• Contains data for 780 stations (776 locations), providing broad geographic coverage across Canada.
• Includes both original and adjusted daily temperature data with associated flags, enhancing transparency.
• Extends the homogenized temperature record through 2023, offering recent data for analysis.
• Uses parallel observations for reliable homogenization where available, as described in the methodology.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for specific analytical tasks.
• Data may reflect geographic bias inherent to station distribution across Canada.

Provenance

Source

Environment and Climate Change Canada

Collection Method

Homogenization of surface air temperature observations from Canadian weather stations, involving merging nearby sites, quality control, and quantile-matching adjustments.

Time Range

Data series extended through 2023, with records likely spanning many decades.

Freshness

Last updated 2026-07-14 15:31:21.081818; freshness should be verified.

Geography

Canada