1. Potsdam Institute for Climate Impact Research (PIK), Member of Leibniz Association, P.O. Box 60 12 03, D-14412 Potsdam, Germany; Department of Environmental Science Policy and Management, University of California Berkeley, 130 Mulford Hall #3114, Berkeley, CA 94720, USA; Complexity Science Hub Vienna, Josefstädterstrasse 39, A-1090 Vienna, Austria
2. Potsdam Institute for Climate Impact Research (PIK), Member of Leibniz Association, P.O. Box 60 12 03, D-14412 Potsdam, Germany; University of Potsdam, Institute of Earth and Environmental Science, Potsdam, Germany
3. Technische Universität Berlin, Chair of Bioprocess Engineering and Institute of Mathematics, Strasse des 17. Juni 135, 10623 Berlin, Germany