Library · Source reference

sentinel2

Provider

Noun	Provider
surface_reflectance	European Union Copernicus Programme / ESA
vegetation_index	European Union Copernicus Programme / ESA

Noun	Product
surface_reflectance	Sentinel-2 Level-2A surface reflectance
vegetation_index	NDVI derived from Sentinel-2 Level-2A B08 and B04

Noun	What it provides
surface_reflectance	default: user-selected Sentinel-2 bands
vegetation_index	ndvi: B08, B04

Noun	Coverage
surface_reflectance	Global land surfaces
vegetation_index	Global land surfaces

Noun	Resolution
surface_reflectance	10, 20, or 60 m by band; CubeDynamics default 10 m
vegetation_index	10 m

Noun	Temporal coverage
surface_reflectance	2015-present
vegetation_index	2015-present

Noun	Access method
surface_reflectance	stac_cog
vegetation_index	stac_cog

Noun	Lifecycle	Revision status	Live health	QA profile
surface_reflectance	implemented	VALIDATED	STALE	continuous_raster_static
vegetation_index	implemented	VALIDATED	STALE	continuous_raster_static

These are catalog declarations, not a new live certification. Inspect evidence and scope.

Noun	Serving revision	Source mode	Identity strategy
surface_reflectance	surface_reflectance.sentinel2@2026-08-26.1	rolling	kind: stac_item_identity; fields: collection, item_ids, processing_baseline, asset_hrefs
vegetation_index	vegetation_index.sentinel2@2026-08-26.1	rolling	kind: stac_item_identity; fields: collection, item_ids, processing_baseline, asset_hrefs

Revision and schema helpers preserve the distinction between a scientific revision and endpoint health.

surface_reflectance: Scene-level cloud filtering does not remove every cloudy pixel.
vegetation_index: NDVI is a greenness index, not a direct measurement of biomass.