Canadian Gridded Homogenized Monthly Precipitation – Version 2 (CanGridP mlyV2)

Overview CanGridP mlyV2 provides high-resolution gridded monthly precipitation amounts for Canada, based on homogenized station observations (Wang et al., 2026). This dataset supports climate analysis, trend assessment, and applications such as model validation, downscaling studies, and climate monitoring. Methodology This dataset was produced using a gridding method (Abbasnezhadi & Wang, 2024) that applies ordinary kriging separately to: • station climate normals (1961–1990) • station climate relative anomalies (expressed as a percentage of the normal) The gridded normals and anomalies are then combined to obtain final gridded monthly total precipitation amounts (Wang et al., 2026). Version 2 applies this method to the Canadian Homogenized Monthly Precipitation Version 2 (CanHomP mlyV2) dataset, which includes 425 stations across Canada (Wang et al. 2026). All stations had sufficient data for calculating monthly normals for 1961-1990 and were used for producing the gridded dataset. CanGridP mlyV2 represents Canada’s precipitation trend reasonably well since 1949, and southern Canada’s trend since 1916, despite changes in data availability over time (Wang et al., 2026). Source…

Publisher

Environment and Climate Change Canada

Resources

1

Catalogue metadata updated

2026-08-18