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UFFDA
Imagery○ Planned2013–present

Harmonized Landsat Sentinel-2 (NASA)

Two satellites, one analysis-ready surface reflectance stream — 30m, ~2–3 day revisit, back to 2013.

What this is

NASA's Harmonized Landsat Sentinel-2 (HLS) cross-calibrates Landsat 8/9 and Sentinel-2 into a single surface-reflectance product at 30m with ~2–3 day revisit globally. Available as COG via STAC on Earthdata and Planetary Computer, 2013–present. No restrictions (Earthdata login required).

Why we surface it

The standard for field-scale time-series analysis. Two missions harmonized into one stream means fewer cloud gaps and a consistent record across the Sentinel era. NDVI, EVI, crop-detection — this is the backbone.

What you can do with it

Shown for commercial use. Personal, research, and nonprofit use is often more permissive — switch the verdict lens on the catalog.

Internal / individual use
Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
Redistribute the data
Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
Republish a derivative
Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).
Build into a private product
Public domain. Use it for anything — internal, resale, AI training, closed products. No attribution legally required (crediting the source is still the decent thing to do).

This decoder is a starting point, not legal advice. For commercial deployment, run the actual license terms past someone who reads them for a living.

○ Planned

Not in the map yet — this source is on the V1 backlog. Schema, sample, and citation slots fill in once the layer ships.

Related — same domain

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