David Janssen¹, Matthias Sieber², Michael Joseph Ellwood³, Tim M Conway⁴, Pamela M Barrett⁵, Christel Hassler⁶ and Sam Jaccard¹, (1)University of Bern, Institute of Geological Sciences & Oeschger Center for Climate Change Research, Bern, Switzerland, (2)ETH Swiss Federal Institute of Technology Zurich, Earth Sciences, Zurich, Switzerland, (3)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (4)University of South Florida, St. Petersburg, FL, United States, (5)The Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia, (6)Department F. -A. Forel for Environmental and Aquatic Sciences, University of Geneva, Switzerland., Geneva, Switzerland