Chaonan Ji, Leipzig University, Germany; Vitus Benson, Max-Planck-Institute for Biogeochemistry, Germany; Gunnar Brandt, Carsten Brockmann, Brockmann Consult GmbH, Germany; Gustau Camps-Valls, Maria Gonyalez Calabuig, Miguel-Ángel Fernández-Torres, University of Valencia, Spain; Norman Fomferra, Tonio Fincke, Brockmann Consult GmbH, Germany; Fabian Gans, Max-Planck-Institute for Biogeochemistry, Germany; Gonzalo Mateo García, University of Valencia, Spain; Guido Kraemer, Leipzig University, Germany; Luis Gómez-Chova, University of Valencia, Spain; David Montero, Leipzig University, Germany; Eva Sevillano Marco, University of Valencia, Spain; Karin Mora, Leipzig University, Germany; Markus Reichstein, Max-Planck-Institute for Biogeochemistry, Germany; Christian Requena-Mesa, Brockmann Consult GmbH, Germany; Oscar José Pellicer Valero, University of Valencia, Spain; Mélanie Weynants, Max-Planck-Institute for Biogeochemistry, Germany; Sebastian Wieneke, Miguel D. Mahecha, Leipzig University, Germany