Indonesia Subnational Dekadal Rainfall and Anomalies with CHIRPS Forecasts

Indonesia subnational rainfall indicators provided by the World Food Programme (WFP) based on CHIRPS satellite imagery and CHIRPS-GEFS forecasts. The data includes dekadal (10-day) measurements and rolling 1-month and 3-month aggregations compared against long-term averages. It covers administrative units across Indonesia with updates occurring multiple times per month to transition from forecasts to final observations.

Use Cases

• Drought monitoring using the rfq (rainfall anomaly %) column to identify regions with significant precipitation deficits
• Agricultural planning by analyzing the r3h (3-month rolling aggregation) to assess soil moisture trends for crop cycles
• Early warning systems by comparing the type column to predict upcoming flood or drought risks at the Pcode level

Strengths

• Includes 9 distinct rainfall and anomaly indicators
• Provides pixel-count metadata (n_pixels) for data quality assessment
• Integrates CHIRPS-GEFS short-term forecasts with historical CHIRPS v2 data

Limitations

• Satellite-derived precipitation estimates may deviate from local station data
• Finalized data for a given month is only available mid-way through the following month

Provenance

Source

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

Collection Method

Satellite imagery aggregation and short-term forecasting models

Freshness

Updated six times per month following a specific publication cycle for forecasts and observations.

Geography

Indonesia