Giulia Tagliabue¹, Cinzia Panigada¹, Marco Celesti¹, Sergio Cogliati¹, Roberto Colombo¹, Mirco Migliavacca², Uwe Rascher³, Duccio Rocchini⁴, Dirk Schuettemeyer⁵ and Micol Rossini¹, (1)University of Milano - Bicocca, Department of Earth and Environmental Sciences, Milan, Italy, (2)Max-Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany, (3)Forschungszentrum Jülich, Jülich, Germany, (4)University of Trento, Center Agriculture Food Environment, S. Michele all'Adige, Italy, (5)ESA-ESTEC, European Space Research and Technology Centre, Noordwijk, Netherlands