1. German Aerospace Centre, Cologne, Germany.
2. Bristol Glaciology Centre, University of Bristol, Bristol, UK.
3. Department of Hydrology and Water Resources, University of Arizona, Tucson, Arizona, USA.
4. School of Oceanography, University of Washington, Seattle, Washington, USA.
5. Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, USA.
6. Space Sciences Group, European Science Foundation, Strasbourg, France.
7. Chemical and Biological Engineering Department, Montana State University, Bozeman, Montana, USA.
8. Department of Planetary Geology, German Aerospace Centre, Berlin, Germany.
9. International Research School of Planetary Sciences, Universita d'Annunzio, Pescara, Italy.
10. Department of Applied Sciences, Northumbria University, Newcastle-upon-Tyne, UK.
11. College of Engineering, University of Michigan, Ann Arbor, Michigan, USA.
12. Richard B. Simches Research Center, Harvard Medical School, Boston, Massachusetts, USA.
13. Austrian Polar Research Institute, University of Innsbruck, Innsbruck, Austria.
14. Langley Research Center, NASA, Hampton, Virginia, USA (Retired).
15. Space Studies Board, National Academies of Science, Engineering, and Medicine, Washington, DC, USA.
16. German Research Centre for Geosciences Helmholtz Centre Potsdam, Potsdam, Germany.
17. Centre de biophysique moléculaire, Centre National de la Recherche Scientifique, Orléans, France.