authority: folia
slug: surface-reflectance
name: Surface Reflectance
domain: imagery
subdomain: optical
authority_id: folia:surface-reflectance
external_ids:
  cf_standard_name: surface_bidirectional_reflectance
canonical_units: dimensionless
external_validations:
  stac:
    extension: raster
    field: raster:bands
    docs_url: https://github.com/stac-extensions/raster
description: |
  Bottom-of-atmosphere (BOA) reflectance — the proportion of incoming
  solar radiation reflected by the Earth's surface, per spectral band,
  after atmospheric correction (Sen2Cor for Sentinel-2, LaSRC for Landsat).
  The canonical input for vegetation indices, change detection, classification.
theme: imagery
consumed_by: []
produced_by: []
demos: []
status: documented
sources:
  - https://sentinels.copernicus.eu/web/sentinel/technical-guides/sentinel-2-msi/level-2a
  - https://www.usgs.gov/landsat-missions/landsat-collection-2-surface-reflectance