Remote Sensing (May 2014)

On Line Validation Exercise (OLIVE): A Web Based Service for the Validation of Medium Resolution Land Products. Application to FAPAR Products

  • Marie Weiss,
  • Frédéric Baret,
  • Tom Block,
  • Benjamin Koetz,
  • Alessandro Burini,
  • Bettina Scholze,
  • Patrice Lecharpentier,
  • Carsten Brockmann,
  • Richard Fernandes,
  • Stephen Plummer,
  • Ranga Myneni,
  • Nadine Gobron,
  • Joanne Nightingale,
  • Gabriela Schaepman-Strub,
  • Fernando Camacho,
  • Arturo Sanchez-Azofeifa

DOI
https://doi.org/10.3390/rs6054190
Journal volume & issue
Vol. 6, no. 5
pp. 4190 – 4216

Abstract

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The OLIVE (On Line Interactive Validation Exercise) platform is dedicated to the validation of global biophysical products such as LAI (Leaf Area Index) and FAPAR (Fraction of Absorbed Photosynthetically Active Radiation). It was developed under the framework of the CEOS (Committee on Earth Observation Satellites) Land Product Validation (LPV) sub-group. OLIVE has three main objectives: (i) to provide a consistent and centralized information on the definition of the biophysical variables, as well as a description of the main available products and their performances (ii) to provide transparency and traceability by an online validation procedure compliant with the CEOS LPV and QA4EO (Quality Assurance for Earth Observation) recommendations (iii) and finally, to provide a tool to benchmark new products, update product validation results and host new ground measurement sites for accuracy assessment. The functionalities and algorithms of OLIVE are described to provide full transparency of its procedures to the community. The validation process and typical results are illustrated for three FAPAR products: GEOV1 (VEGETATION sensor), MGVIo (MERIS sensor) and MODIS collection 5 FPAR. OLIVE is available on the European Space Agency CAL/VAL portal), including full documentation, validation exercise results, and product extracts.

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