NASDI: Canadian Precipitation Percentiles with Historical Data Since 1980

Historical data since 1980 provides context for current precipitation amounts, which are ranked into percentile values. The National Agroclimate Series of Derived Indicators (NASDI) product from Agriculture and Agri-Food Canada calculates these percentiles for multiple time periods, from 1 to 24 months. This dataset incorporates both real-time and historical climate information to offer insight into conditions across Canada's agricultural regions.

Use Cases

• Monitor drought conditions based on accumulated precipitation percentiles for periods up to 24 months.
• Analyze long-term precipitation trends in agricultural regions based on the historical record starting in 1980.
• Compare current precipitation to historical norms for specific ISO weeks throughout the year.
• Integrate percentile data with other agroclimatic variables like temperature differences for comprehensive climate analysis.

Strengths

• Historical record provides a consistent baseline for comparison, with data going back to 1980.
• Calculates precipitation percentiles for eight distinct time periods, from 1 to 24 months.
• Data is regularly updated, incorporating both real-time and historical climate information.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Data may reflect geographic bias inherent to its source, focusing on Canadian agricultural regions.

Provenance

Source

Agriculture and Agri-Food Canada

Collection Method

Derived from climate observations and historical records.

Time Range

Historical data from 1980 onward

Freshness

Last updated 2026-05-26 19:31:18.659101; freshness should be verified.

Geography

Canada, with a focus on agricultural regions