Myanmar Subnational Rainfall Indicators: Dekadal CHIRPS Data and Forecasts

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

Use Cases

• Monitoring drought conditions by analyzing the 3-month rainfall anomaly (r3q) relative to historical norms
• Predicting agricultural yields using 1-month rolling rainfall aggregations (r1h) during the growing season
• Comparing current rainfall (rfh) against long-term averages (rfh_avg) for climate trend analysis

Strengths

• Includes both historical averages and short-term forecasts (CHIRPS-GEFS)
• Aggregated to standard WFP Pcode administrative units for easy joining
• Provides pixel count metadata (n_pixels) for data quality assessment

Limitations

• Relies on satellite-derived estimates which may differ from ground-based station measurements
• Finalized observations for a given month are only available mid-way through the following month
• Administrative boundaries are specific to WFP definitions

Provenance

Source

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

Collection Method

Satellite imagery and short-term rainfall forecasts aggregated by administrative boundaries

Freshness

Updated six times per month on a rolling cycle (1st, 6th, 11th, 16th, 21st, and 26th).

Geography

Myanmar