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AlphaEarth Foundations GeoZarr Mosaic

This product contains a global GeoZarr mosaic of the AlphaEarth Foundations annual Satellite Embedding dataset, from 2017 to 2025.

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What's in it

Data offered docs-verified
AlphaEarth Foundations annual Satellite Embedding dataset (global GeoZarr mosaic) · 64 embedding dimensions per pixel (bands), int8 quantized
Coverage docs-verified
Global (bbox [-180.0, -83.36, 180.22, 83.69]) · 2017-2025 (annual, indices 0-8)
Resolution docs-verified
~0.00009° (~10m at equator) in EPSG:4326; fixed pixel size in degrees, so ground area shrinks at higher latitudes
Formats docs-verified
Zarr v3 (sharded) · GeoZarr
Access docs-verified
Public; anonymous S3 access (no credentials) via source.coop; CC-BY 4.0 licence, attribution required ("The AlphaEarth Foundations Satellite Embedding dataset is produced by Google and Google DeepMind.")

Useful for

Use cases llm-inferred
Land-cover and habitat change screening between 2017 and 2025 for BNG baseline or site-history review, using temporal embedding differences · Similarity search from a reference habitat or site to find analogous land cover across a study corridor or catchment · Regional land-cover feature inputs for ecological or drainage-catchment desk studies, sampled per site with a bbox or point query
Audience llm-inferred
GIS analysts · ecologists · hydrologists · planners · remote sensing analysts

Limitations

Constraints llm-inferred
Not officially supported by Google (community-hosted copy) · Zarr conventions are immature and may change · Pixel size is fixed in degrees, so area is distorted at higher latitudes; reproject for area analysis · Data is int8 quantized (nodata = -128) and must be de-quantized before use · Latitude coverage stops at about -83.36 to 83.69, so no polar coverage · Requires zarr-python or xarray tooling; support is via the CNG Slack channel only
Licence
see product README
Authentication
Public; anonymous HTTPS/S3 access via data.source.coop
GitHub stars
Unknown
Last commit
Unknown
Last successful page check
14/10/2026
Page health
page reachable
Package
Not recorded
Verification
Not independently verified

Provenance & evidence

Verified via Source Cooperative API /api/v1/products/tge-labs (public product, updated 2026-03-25).

Metadata observed 14/10/2026 · research sweep: manual-2026-10-15 (source.coop)