Rupert Stuart-Smith, University of Oxford, School of Geography and the Environment, Oxford, United Kingdom; University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States, Gerard Roe, University of Washington, Seattle, Department of Earth and Space Sciences, Seattle, WA, United States, Sihan Li, Oxford e-Research Centre, Oxford University, Oxford, United Kingdom and Myles Robert Allen, University of Oxford, ECI/School of Geography and the Environment, Oxford, United Kingdom; University of Oxford, Physics, Oxford, United Kingdom