Marco Celesti¹, Khelvi Biriukova¹, Petya K. E. Campbell^2,3, Ilaria Cesana¹, Sergio Cogliati¹, Alexander Damm^4,5, Matthias Drusch⁶, Tommaso Julitta⁷, Elizabeth Middleton³, Mirco Migliavacca⁸, Franco Miglietta⁹, Cinzia Panigada¹, Uwe Rascher¹⁰, Micol Rossini¹, Dirk Schuettemeyer⁶, Giulia Tagliabue¹, Christiaan van der Tol¹¹, Jochem Verrelst¹², Peiqi Yang¹³ and Roberto Colombo¹, (1)University of Milano - Bicocca, Department of Earth and Environmental Sciences, Milan, Italy, (2)University of Maryland Baltimore County, JCET, Baltimore, MD, United States, (3)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (4)EAWAG Swiss Federal Institute of Aquatic Science and Technology, Duebendorf, Switzerland, (5)University of Zurich, Zurich, Switzerland, (6)ESA-ESTEC, European Space Research and Technology Centre, Noordwijk, Netherlands, (7)JB Hyperspectral Devices, Dusseldorf, Germany, (8)Max-Planck Institute for Biogeochemistry, Department of Biogeochemical Integration, Jena, Germany, (9)CNR National Research Council, Rome, Italy, (10)Forschungszentrum Jülich, Jülich, Germany, (11)University of Twente, ITC-Faculty of Geo-Information Science and Earth Observation, Enschede, Netherlands, (12)University of Valencia, Valencia, Spain, (13)University of Twente, ITC-Faculty of Geo-Information Science and Earth Observation, Enschede, 7500, Netherlands