1. Potsdam Institute for Climate Impact Research, P.O. Box 601203, D-14412 Potsdam, Germany
2. Stockholm Resilience Centre, Stockholm University, Kräftriket 2B, 114 19 Stockholm, Sweden
3. Department of Physics, Humboldt University Berlin, Newtonstr. 15, D-12489 Berlin, Germany
4. Institute for Marine and Atmospheric Research Utrecht (IMAU), Department of Physics and Astronomy, Utrecht University, Utrecht, The Netherlands
5. Institute for Complex Systems and Mathematical Biology, University of Aberdeen, Aberdeen AB24 3FX, United Kingdom
6. Department of Control Theory, Nizhny Novgorod State University, Gagarin Avenue 23, 606950 Nizhny Novgorod, Russia