CEOS LPV Stage 0-4 Validation Hierarchy

The CEOS Land Product Validation (LPV) subgroup's Stage 0-4 hierarchy is the international standard for expressing validation maturity of satellite-derived land products. Stage 0 (no assessment) through Stage 4 (systematic, fiducial-reference-backed updates) defines the common scale against which products across twelve thematic focus areas (including Land Cover, Aboveground Biomass, Vegetation Index, and Evapotranspiration) are assessed and compared.