1. Laboratoire des Sciences du Climat et de l'Environnement; UMR8212; CEA-CNRS-UVSQ; Gif-sur-Yvette 91191 France
2. Sorbonne Universités (UPMC, Univ Paris 06)-CNRS-IRD-MNHN, LOCEAN/IPSL; 4 place Jussieu Paris 75005 France
3. Commonwealth Scientific and Industrial Research Organisation, Agriculture Flagship; St. Lucia QLD 4067 Australia
4. Ecosystems Services and Management Program; International Institute for Applied Systems Analysis; Laxenburg 2361 Austria
5. Laboratoire de Météorologie Dynamique; Institute Pierre Simon Laplace; Paris 75005 France
6. Sino-French Institute of Earth System Sciences; College of Urban and Environmental Sciences; Peking University; Beijing 100871 China
7. INRA; Grassland Ecosystem Research Unit; UREP; Clermont-Ferrand 63100 France