Mali Subnational Rainfall: Dekadal Totals and Anomalies

Mali subnational rainfall indicators provided by the World Food Programme (WFP) based on CHIRPS satellite imagery and CHIRPS-GEFS forecasts. The data is aggregated into 10-day (dekadal) intervals and includes historical averages and anomalies for monitoring drought or flood conditions. It covers administrative units identified by standardized Pcode references.

Use Cases

• Monitoring drought conditions by analyzing the 3-month rainfall anomaly (r3q) across administrative units
• Predicting agricultural yields by comparing 10-day rainfall totals (rfh) against long-term averages (rfh_avg)
• Identifying flood risks using the 1-month rolling aggregation (r1h) during peak rainy seasons

Strengths

• Includes 3-month rolling aggregations (r3h) for long-term trend analysis
• Provides anomaly percentages (rfq) relative to long-term averages
• Uses standardized WFP Pcodes for integration with other humanitarian datasets

Limitations

• Data values for recent periods may change as forecasts are replaced by preliminary and then final observations
• Spatial resolution is restricted to administrative unit aggregates rather than raw pixel-level data

Provenance

Source

World Food Programme (WFP) via CHIRPS v2 and CHIRPS-GEFS

Collection Method

Satellite imagery and in-situ station data aggregation

Freshness

Updated multiple times per month following a strict cycle of forecasts (6th, 16th, 26th) and observation updates.

Geography

Mali