1. Oeschger Centre for Climate Change Research University of Bern Bern Switzerland
2. University of Bern Institute of Plant Sciences Bern Switzerland
3. Division of Hydrologic Sciences Desert Research Institute Reno NV USA
4. Laboratory of Environmental Chemistry Paul Scherrer Institute Villigen Switzerland
5. Department of Chemistry Biochemistry and Pharmaceutical Sciences University of Bern Bern Switzerland
6. University of Bern Institute of History Bern Switzerland
7. University of Bern Physics Institute Bern Switzerland
8. Swiss Federal Laboratories for Materials Science and Technology Dübendorf Switzerland
9. U.S. Geological Survey Geosciences and Environmental Change Science Center Denver CO USA