Niger Subnational NDVI: Dekadal Vegetation Indicators and Anomalies

Supplying dekadal vegetation health indicators for Niger, produced by the World Food Programme (WFP) using NASA MODIS collection 6.1 satellite imagery. It tracks Normalized Difference Vegetation Index (NDVI) values and anomalies aggregated by sub-national administrative units to monitor environmental conditions.

Use Cases

• Detecting drought or crop stress by monitoring the NDVI anomaly percentage (viq)
• Analyzing seasonal vegetation trends by comparing current NDVI (vim) against long-term averages (vim_lta)
• Mapping regional environmental health across Niger using Pcode administrative references

Strengths

• Derived from NASA MODIS collection 6.1 Aqua and Terra satellite data
• Includes historical baselines (vim_lta) for longitudinal comparison
• Provides n_pixels column to verify the data density of each aggregate

Limitations

• Aggregated at the administrative level, which obscures local-scale vegetation variance within units
• Geographic scope is limited strictly to Niger

Provenance

Source

World Food Programme (WFP) via NASA MODIS

Collection Method

Satellite sensor data aggregation

Freshness

Last updated March 2026.

Geography

Niger