Satellite embeddings tested on solar farms in central Massachusetts
A reproducible test of AlphaEarth satellite embeddings on a 20 km box: similarity search for solar farms, 2018 to 2024 change detection, and where each one broke.
Earth observationBlog
Fieldnotes
Working notes on spatial data, Earth observation, and the engineering behind useful maps.
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What native Parquet geometry types change for GeoParquet pipelines
Parquet now has GEOMETRY and GEOGRAPHY logical types. What they store, how they relate to GeoParquet 1.1 and 2.0, and what GDAL 3.12 actually writes today.
Data engineering -
Earth Engine results in your own web map: four routes and their limits
Iframe an Earth Engine App, serve live map tiles, export static tiles, or use the Map Tiles API: what each needs for auth, billing, caching and terms.
Web mapping -
What it takes to trust a burn-scar segmentation
A post-fire NBR baseline on HLS Burn Scars, per-chip scores, a split leakage check and the MTBS label caveats, set against published Prithvi numbers.
Earth observation -
Amsterdam's buildings from GeoParquet to one PMTiles file
110,365 Overture buildings cut into a 7.2 MB PMTiles archive: the tippecanoe flags, per-zoom tile sizes, hosting failures, and what a static archive cannot do that a database can.
Web mapping
