1. Institute for Strategy, Resilience, and Security, University College London, London WC1E 6BT, United Kingdom
2. Global Systems Institute, University of Exeter, Exeter EX4 4QE, United Kingdom
3. Department of Atmospheric Sciences, University of Utah, Salt Lake City, UT 84112
4. School of Earth and Environmental Sciences, University of St. Andrews, St. Andrews KY16 9AJ, United Kingdom
5. Research, Butterfly Sciences, Davis, CA 95617
6. Department of Mathematics and Statistics, McMaster University, Hamilton, ON, L8S 4K1 Canada