Solomon Islands: Subnational Dekadal Rainfall and Forecasts

Subnational rainfall indicators for the Solomon Islands provided by the World Food Programme, featuring 10-day (dekadal) observations and rolling aggregations. Derived from CHIRPS v2 satellite imagery and CHIRPS-GEFS forecasts, the data covers administrative units identified by WFP Pcodes. Records include historical averages and anomaly percentages, with updates issued six times per month.

Use Cases

• Monitoring drought or flood conditions using the rainfall anomaly percentage (rfq)
• Analyzing seasonal trends by comparing current rolling aggregations (r3h) against long-term averages (r3h_avg)
• Predicting short-term agricultural impacts using CHIRPS-GEFS forecasts identified in the type column

Strengths

• Includes long-term averages (rfh_avg) for anomaly calculation
• Provides pixel counts (n_pixels) to indicate data density
• Distinguishes between forecast, preliminary, and final data types

Limitations

• Relies on satellite-derived estimates (CHIRPS) which may differ from ground-station measurements
• Geographic scope is restricted to Solomon Islands

Provenance

Source

World Food Programme (WFP)

Collection Method

Satellite imagery aggregation from CHIRPS v2 and CHIRPS-GEFS forecasts

Freshness

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

Geography

Solomon Islands