1. Biogeochemical Model-Data Integration Group; Max Planck Institute for Biogeochemistry; Jena; Germany
2. Laboratoire des Sciences du Climat et de L'Environnement, CEA; UVSQ, CNRS; Gif-sur-Yvette; France
3. Ecosystem Science Division, Department of Environmental Science, Policy and Management and Berkeley Atmospheric Science Center; University of California; Berkeley; California; USA
4. Department of Forest Ecosystems and Society, College of Forestry; Oregon State University; Corvallis; Oregon; USA
5. Department of Forest Environment and Resources; University of Tuscia; Viterbo; Italy
6. Grassland Ecosystem Research, UR874; INRA; Clermont-Ferrand; France
7. Air Pollution/Climate Group; Agroscope Reckenholz-Tnikon Research Station; Zurich; Switzerland
8. Department of Agricultural and Food Sciences, Institute of Plant Sciences; ETH Zurich; Zurich; Switzerland
9. Centro di Ecologia Alpina; Fondazione Edmund Mach; Trento; Italy
10. Department of Biology; University of Antwerp; Wilrijk; Belgium
11. Department of Meteorology; Technische Universität Dresden; Dresden; Germany
12. ESS-CC; Alterra Wageningen UR; Wageningen; Netherlands
13. Cirad-Persyst, UPR80; Fonctionnement et Pilotage des Ecosystmes de Plantation; Montpellier; France
14. Laboratory of Plant Ecology, Department of Applied Ecology and Environmental Biology; Ghent University; Ghent; Belgium
15. Department of Physics; University of Helsinki; Helsinki; Finland
16. Graduate School of Geography; Clark University; Worcester; Massachusetts; USA
17. Institut für Ökologie; Universität Innsbruck; Innsbruck; Austria