1. Interdisciplinary Center for Dynamics of Complex Systems, University of Potsdam14476 Potsdam, Germany
2. Department of Biomagnetism, Chair of Radiology and Microtherapy, University of Witten/Herdecke44799 Bochum, Germany
3. Institute for Applied Computer Science, Forschungszentrum Karlsruhe GmbH (Karlsruhe Research Center), KIT Karlsruhe Institute of Technology76344 Karlsruhe, Germany
4. Department of Physics, Humboldt-Universität zu Berlin12489 Berlin, Germany
5. Potsdam Institute for Climate Impact Research14412 Potsdam, Germany