Guinea-Bissau: Subnational Rainfall Indicators and Anomalies by Dekad

WFP provides dekadal rainfall indicators for Guinea-Bissau aggregated by subnational administrative units using CHIRPS v2 satellite imagery and CHIRPS-GEFS forecasts. The data includes 10-day, 1-month, and 3-month rainfall totals, long-term averages, and percentage anomalies.

Use Cases

• Drought monitoring using the 'rfq' column to identify regions with significant precipitation deficits
• Agricultural season tracking by comparing 'rfh' against 'rfh_avg' for specific subnational units
• Early warning systems using the 'type' column to integrate 10-day rainfall forecasts into disaster planning

Strengths

• Includes 9 distinct rainfall indicators including rolling aggregations and anomalies
• Uses standardized WFP Pcode references for subnational administrative units
• Provides n_pixels count to indicate the spatial data density used for each aggregate

Limitations

• Relies on satellite-derived estimates (CHIRPS) which may vary from local rain gauge measurements
• Temporal mix of forecast, preliminary, and final products requires careful filtering by the 'type' column

Provenance

Source

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

Collection Method

Satellite imagery aggregation and short-term forecasting models

Freshness

Updated frequently with forecasts issued on the 6th, 16th, and 26th of each month and updated on the 1st, 11th, and 21st.

Geography

Guinea-Bissau