Chile: Subnational Dekadal Rainfall Indicators and Forecasts

Dekadal rainfall indicators for Chile's subnational administrative units, derived from CHIRPS satellite imagery and CHIRPS-GEFS forecasts. Produced by the World Food Programme (WFP), the data provides 10-day, 1-month, and 3-month rainfall aggregations and anomalies. The dataset is updated six times per month to transition from initial forecasts to final observations.

Use Cases

• Drought monitoring using the 3-month rainfall anomaly percentage (r3q)
• Agricultural season tracking by comparing current rainfall (rfh) to long-term averages (rfh_avg)
• Short-term weather impact modeling using CHIRPS-GEFS forecasts identified in the 'type' column

Strengths

• Includes 3-month rolling anomalies (r3q) for long-term climate trend analysis
• Provides metadata on data status via the 'type' column to distinguish forecasts from final products
• Uses standardized WFP Pcode references for administrative units

Limitations

• Satellite-derived CHIRPS data may contain estimation errors compared to local rain gauges in complex terrain
• Data for the most recent dekads are forecasts or preliminary and subject to revision as final observations are published

Provenance

Source

World Food Programme (WFP) using CHIRPS and CHIRPS-GEFS from Climate Hazards Center

Collection Method

Satellite imagery (CHIRPS v2) and station data aggregation

Freshness

Updated six times per month on the 1st, 6th, 11th, 16th, 21st, and 26th.

Geography

Chile