Developer Builds Sentinel-2 Vegetation Map of Kefalonia Using Free ESA Data

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A developer working on a project called ARGOS successfully processed the first Sentinel-2 satellite pass over the Greek island of Kefalonia within 48 hours. Using freely available European Space Agency imagery updated every five days, the goal was to generate a baseline NDVI vegetation map of the entire island. The pipeline, built with Python, rasterio, xarray, and GDAL, involved roughly twelve steps and required converting data from UTM 34N to WGS84 for web mapping. The resulting 180-line script — 40 lines of which are error handling — filters clouds, calculates NDVI, and outputs a GeoTIFF for eventual ingestion into PostGIS. The next phase will layer wildfire risk data using slope, aspect, NDVI, and fuel type, though the developer acknowledges the model currently misclassifies Greek fir burn behaviour.

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