Physically-based algorithm for deriving Fraction of Absorbed Photosynthetically Active Radiation (FAPAR) products has been designed and optimized by the Joint Research Centre (JRC) for various Earth Observation (EO) sensors. Among them, VITO implements JRC-FAPAR for 1) Moderate Resolution Imaging Spectroradiometer (MODIS) data at 250 m of spatial resolution and 2) VEGETATION at 1 km. They process data over Europe for delivering them in near-real time to MARS project. The corresponding algorithms are published in Gobron et al. (2006b, Gobron et al. (2006a) and Gobron et al. (2002), respectively. Note that these above algorithms have been optimized using nominal spectral responses of the first MODIS intrument, i.e. on board the TERRA platform and for VEGETATION. We propose here to evaluate VITO implementation processing chain using data over Europe by comparing their products to the those computed with original codes at JRC. The first exercice presents results of direct comparison using daily MODIS data at 250 m over a small region. The second analysis concerns the comparison using VEGETATION data at 1 km over Europe. Section 4.3 presents additional comparisons over Europe between VEGETATION, MODIS and MERIS at 1 km.

GOBRON Nadine;  CECCHERINI Guido; 

2013-01-25

Publications Office of the European Union

JRC76383

978-92-79-27998-0,   

1831-9424,   

EUR 25668 EN,    OP LB-NA-25668-EN-N,   

https://publications.jrc.ec.europa.eu/repository/handle/JRC76383,   

10.2788/7624,