1. Department of Geography, Ludwig Maximilians Universität, Luisenstrasse 37, 80333 Munich, Germany
2. Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA-CNRS-UVSQ, UMR8212, 91191 Gif-sur-Yvette, France
3. College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter EX4 4QF, UK
4. College of Life and Environmental Sciences, University of Exeter, Exeter EX4 4RJ, UK
5. Max Planck Institute for Meteorology, 20146 Hamburg, Germany
6. Max Planck Institute for Biogeochemistry, 07745 Jena, Germany
7. Karlsruhe Institute of Technology, Institute of Meteorology and Climate Research / Atmospheric Environmental Research, 82467 Garmisch-Partenkirchen, Germany
8. CSIRO Oceans and Atmosphere, Canberra 2601, Australia
9. Department of Atmospheric Sciences, University of Illinois, Urbana, IL 61801, USA
10. Laboratoire Evolution et Diversite Biologique UMR 5174, CNRS Universite Paul Sabatier, Toulouse, France
11. Climate and Environmental Physics, Physics Institute and Oeschger Centre for Climate Change Research, University of Bern, Bern 3012, Switzerland
12. Department of Meteorology, University of Reading, Earley Gate, Reading RG6 6BB, UK
13. Department of Environmental Systems Science, Institute for Atmospheric and Climate Science, ETH Zürich, Zürich, Switzerland
14. International Center for Climate and Global Change Research, School of Forestry and Wildlife Sciences, Auburn University, 602 Duncan Drive, Auburn, AL 36849, USA