Tunisia Subnational NDVI: Dekadal Vegetation Indices and Anomalies

Tunisia dekadal NDVI indicators aggregated by sub-national administrative units using NASA MODIS collection 6.1 satellite data. Produced by the World Food Programme, the data tracks vegetation health through 10-day intervals, including historical averages and percentage anomalies.

Use Cases

• Analyzing crop stress by monitoring the `viq` (NDVI anomaly percentage) column
• Establishing vegetation baselines for specific regions using the `vim_lta` field
• Assessing data reliability per administrative unit using the `n_pixels` count

Strengths

• Derived from NASA MODIS collection 6.1 satellite data
• Includes `vim_lta` (long term average) for baseline comparisons
• Provides `n_pixels` count for every administrative aggregate

Limitations

• Spatial resolution is limited to administrative unit aggregates rather than raw pixel data
• Geographic boundaries are restricted to WFP-defined Pcode units

Provenance

Source

World Food Programme (WFP) via NASA MODIS Aqua and Terra satellites

Collection Method

Satellite sensor data aggregation

Freshness

Updated through March 2026

Geography

Tunisia