NASDI: Percent of Average Precipitation for Canadian Agricultural Regions

Canadian precipitation data representing the total precipitation for a location over a specific time period divided by its 1991-2020 long-term average, expressed as a percentage. The National Agroclimate Series of Derived Indicators (NASDI) from Agriculture and Agri-Food Canada provides this and other key agroclimatic variables, incorporating both real-time and historical climate information. Time periods calculated include 1, 2, 3, 6, 9, 12, 18, and 24 months.

Use Cases

• Monitor drought severity based on percent of average precipitation over multiple time periods.
• Analyze long-term precipitation trends for specific Canadian locations based on the 1991-2020 baseline.
• Compare current precipitation conditions to historical norms for agricultural planning and risk assessment.
• Model agroclimatic risk by integrating this precipitation indicator with other NASDI variables like temperature difference from normal.

Strengths

• Uses a standardized 1991-2020 long-term average for consistent historical comparison.
• Calculates percent of average precipitation for 8 distinct time periods (1 to 24 months) to capture various climatic scales.
• Incorporates both real-time and historical climate information, as stated in the description.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic bias inherent to its focus on Canada's agricultural regions.

Provenance

Source

Agriculture and Agri-Food Canada

Collection Method

Derived from climate observations; methodology details are not specified in the provided input.

Time Range

Historical and real-time; long-term average is based on 1991-2020.

Freshness

Last updated 2026-05-26 19:31:08.356839; freshness should be verified.

Geography

Canada's agricultural regions