1. Laboratoire des Sciences du Climat et de l’Environnement, IPSL/CEA-CNRS-UVSQ, Saclay, Gif-sur-Yvette, France
2. Laboratory of Cryosphere and Environment, Chinese Academy of Sciences, Lanzhou, China
3. Arctic and Antarctic Research Institute, St. Petersburg, Russia
4. Laboratorio de Estratigrafía Glaciar y Geoquímica del Agua y de la Nieve, Instituto Antártico Argentino, Mendoza, Argentina
5. Nucleo de Pesquisas Antarcticas e Climaticas, Departmento de Geografia, Instituto de Geociencias, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
6. The Ohio State University, Columbus, Ohio
7. ENEA, Rome, Italy
8. Laboratoire de Glaciologie et de Géophysique de l’Environnement, CNRS-Université Joseph Fourier, Saint Martin d’Hères, France
9. Department of Geological, Environmental and Marine Sciences, University of Trieste, Trieste, Italy
10. Norwegian Polar Institute, Tromsø, Norway
11. Earth Science Institute, Hebrew University, Jerusalem, Israel
12. Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, Netherlands
13. Departamento de Geologica y Geoquimica, Universidad Autonoma de Madrid, Madrid, Spain
14. Antarctic Climate and Ecosystems CRC, and Australian Antarctic Division, Hobart, Australia
15. National Institute of Polar Research, Research Organization of Information and Systems, Tokyo, Japan
16. Department of Atmospheric and Oceanic Sciences, and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado
17. Alfred-Wegener-Institute für Polar und Meeresforschung, Bremerhaven, Germany
18. NASA GISS, New York, New York
19. Institute of Meteorology and Geophysics, University of Innsbruck, Innsbruck, Austria
20. Department of Earth and Space Sciences, University of Washington, Seattle, Washington
21. UR Greatice, IRD, Paris, France
22. INSTAAR, Boulder, Colorado