1. U.S. Geological Survey, Alaska Cooperative Fish and Wildlife Research Unit; University of Alaska Fairbanks; Fairbanks Alaska USA
2. Lawrence Berkeley National Laboratory; Berkeley California USA
3. National Center for Atmospheric Research; Boulder Colorado USA
4. Institute of Arctic Biology; University of Alaska Fairbanks; Fairbanks Alaska USA
5. Tiantong National Station of Forest Ecosystem, School of Ecological and Environmental Sciences; East China Normal University; Shanghai China
6. Department of Environmental Science and Analytical Chemistry (ACES) and Bolin Centre for Climate Research; Stockholm University; Stockholm Sweden
7. Met Office Hadley Centre; Exeter UK
8. Environmental Sciences Division; Oak Ridge National Laboratory; Oak Ridge Tennessee USA
9. Department of Civil and Environmental Engineering; University of Washington; Seattle Washington USA
10. GAME, Unité Mixte de Recherche CNRS/Meteo-France (UMR 3589); Toulouse CEDEX France
11. Institute of Arctic Alpine Research; University of Colorado Boulder; Boulder Colorado USA
12. School of Earth and Ocean Sciences; University of Victoria; Victoria British Columbia Canada
13. Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
14. Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, UMR 8212; Gif-sur-Yvette France
15. Universite-Grenoble Alpes/CNRS, Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE), UMR 5183, BP53; Grenoble France
16. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research; Potsdam Germany
17. State Key Laboratory of Earth Surface Processes and Resource Ecology; College of Global Change and Earth System Science, Beijing Normal University; Beijing China
18. Department of Integrated Climate Change Projection Research; Japan Agency for Marine-Earth Science and Technology; Yokohama Japan
19. Department of Physical Geography and Ecosystem Science; Lund University; Lund Sweden
20. School of Earth and Space Exploration; Arizona State University; Tempe Arizona USA
21. Irstea, UR HHLY, 5 rue de la Doua, CS 70077; Villeurbanne CEDEX France
22. Department of Geography; University of California; Los Angeles California USA
23. Department of Microbiology and Plant Biology; University of Oklahoma; Norman Oklahoma USA
24. Center for Ecosystem Science and Society and Department of Biological Sciences; Northern Arizona University; Flagstaff Arizona USA
25. National Snow and Ice Data Center; University of Colorado Boulder; Boulder Colorado USA
26. Purdue University; West Lafayette Indiana USA