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arXiv · 2012.05367

Generation of global vegetation products from EUMETSAT AVHRR/METOP satellites

Francisco Javier García-Haro·Manuel Campos-Taberner·Beatriz Martínez·Sergio Sánchez-Ruiz·María Amparo Gilabert·Gustau Camps-Valls·Jordi Muñoz-Marí·Valero Laparra·Fernando Camacho·Jorge Sanchez-Zapero·Beatriz Fuster
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Abstract

We describe the methodology applied for the retrieval of global LAI, FAPAR and FVC from Advanced Very High Resolution Radiometer (AVHRR) onboard the Meteorological-Operational (MetOp) polar orbiting satellites also known as EUMETSAT Polar System (EPS). A novel approach has been developed for the joint retrieval of three parameters (LAI, FVC, and FAPAR) instead of training one model per parameter. The method relies on multi-output Gaussian Processes Regression (GPR) trained over PROSAIL EPS simulations. A sensitivity analysis is performed to assess several sources of uncertainties in retrievals and maximize the positive impact of modeling the noise in training simulations. We describe the main features of the operational processing chain along with the current status of the global EPS vegetation products, including details about its overall quality and preliminary assessment of the products based on intercomparison with equivalent (MODIS, PROBA-V) satellite vegetation products.

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Francisco Javier García-Haro, Manuel Campos-Taberner, Beatriz Martínez, Sergio Sánchez-Ruiz, María Amparo Gilabert, Gustau Camps-Valls, Jordi Muñoz-Marí, Valero Laparra, Fernando Camacho, Jorge Sanchez-Zapero, Beatriz Fuster. 2020-12-07. Generation of global vegetation products from EUMETSAT AVHRR/METOP satellites. https://doi.org/10.1109/igarss.2018.8518083

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