Guyana Subnational NDVI: Dekadal Vegetation Indicators and Anomalies
Updated 4mo ago
2filesCSV
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Description
A source of dekadal (10-day) Normalized Difference Vegetation Index (NDVI) indicators for Guyana, aggregated by sub-national administrative units using NASA MODIS collection 6.1 satellite data. Produced by the World Food Programme (WFP), the data tracks vegetation health through current readings, historical averages, and percentage anomalies. It utilizes WFP-defined administrative boundaries and Pcode references for spatial consistency.
Use Cases
Monitoring agricultural health by comparing current NDVI (vim) against the long-term average (vim_lta)
Identifying drought conditions or vegetation stress using the NDVI anomaly percentage (viq)
Analyzing temporal vegetation trends across specific Guyana administrative units using Pcode references
Strengths
Uses NASA MODIS collection 6.1 high-quality satellite imagery
Includes long-term average (vim_lta) for historical baseline comparison
Provides pixel counts (n_pixels) to indicate the data density of each aggregate
Limitations
Aggregated at the sub-national level, which masks local-scale vegetation variations
Dependent on cloud-free satellite observations for accurate NDVI calculation
Provenance
Source
World Food Programme (WFP) using NASA MODIS (Aqua and Terra) data
Collection Method
Satellite sensor data aggregation
Freshness
Updated as of March 2026.
Geography
Guyana
The administrative units are based on WFP data and require the use of Pcode references for joining with other geospatial datasets. The data is licensed under CC-BY.