Senegal Subnational Rainfall: Dekadal Indicators and Forecasts

Senegal subnational rainfall indicators aggregated by dekad (10-day periods) from CHIRPS satellite imagery and CHIRPS-GEFS forecasts. Produced by the World Food Programme, the data includes historical averages and anomalies for administrative units identified by WFP Pcodes.

Use Cases

• Drought monitoring by comparing current rainfall (rfh) against long-term averages (rfh_avg)
• Agricultural trend analysis using 3-month rolling aggregations (r3h) to assess seasonal performance
• Early warning modeling using the type column to filter for forecast data versus final validated observations

Strengths

• 9 distinct rainfall indicators including rolling aggregations and anomalies
• Standardized WFP Pcode administrative identifiers for geospatial joining
• High-frequency update cycle providing both forecasts and validated observations

Limitations

• Satellite-derived estimates from CHIRPS may differ from local rain gauge measurements
• Statistical reliability varies by administrative unit size as indicated by the n_pixels column

Provenance

Source

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

Collection Method

Aggregation of Climate Hazards Group InfraRed Precipitation satellite imagery and in-situ station data

Freshness

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

Geography

Senegal