Guinea-Bissau: Subnational Dekadal NDVI and Vegetation Anomalies

Dekadal NDVI indicators for Guinea-Bissau are provided at the sub-national level using NASA MODIS collection 6.1 satellite data. Produced by the World Food Programme (WFP) and updated through March 2026, the data includes vegetation health metrics and historical anomalies aggregated by administrative units.

Use Cases

• Monitoring agricultural health by comparing `vim` against `vim_lta` across different dekads
• Identifying drought conditions using the `viq` anomaly percentage column
• Spatial analysis of vegetation density using WFP Pcode administrative references

Strengths

• Uses NASA MODIS collection 6.1 high-resolution satellite data
• Includes Pcode references for standardized administrative unit joins
• Provides `n_pixels` to indicate the statistical weight of each aggregate

Limitations

• Aggregated at the sub-national level, losing granular pixel-level spatial variance
• Dependent on cloud-free satellite observations for accurate NDVI calculation
• Temporal resolution is fixed to 10-day (dekadal) intervals

Provenance

Source

World Food Programme (WFP) using NASA MODIS collection 6.1

Collection Method

Satellite sensor data aggregation

Freshness

Updated as of March 2026.

Geography

Guinea-Bissau