Nigeria Subnational NDVI: Dekadal Vegetation Indices and Anomalies

Dekadal NDVI indicators for Nigeria's sub-national administrative units are derived from NASA MODIS collection 6.1 satellite imagery. Maintained by the World Food Programme, the data tracks vegetation health through 10-day indices, historical averages, and percentage anomalies.

Use Cases

• Assessing crop stress by comparing vim (10-day NDVI) against vim_lta (long-term average)
• Mapping drought severity across Nigeria using the viq (NDVI anomaly percentage) field
• Evaluating the statistical reliability of regional aggregates using the n_pixels count

Strengths

• Derived from NASA MODIS collection 6.1 (Aqua and Terra) high-resolution sensors
• Includes n_pixels column to validate the data density and reliability of each regional aggregate
• Standardized using WFP Pcode references for consistent administrative unit tracking

Limitations

• Spatial resolution is limited to administrative unit aggregates rather than raw pixel data
• Accuracy is dependent on cloud-free satellite observations during each 10-day window

Provenance

Source

World Food Programme (WFP) using NASA MODIS collection 6.1

Collection Method

Satellite remote sensing aggregation from MODIS Aqua and Terra sensors

Freshness

Updated through March 2026 per the source metadata.

Geography

Nigeria