1. Department of Physics Blackett Laboratory Imperial College London London UK
2. British Antarctic Survey Cambridge UK
3. GFZ German Research Centre for Geosciences Potsdam Germany
4. Department of Mathematics University of Exeter Penryn/Cornwall Campus Penryn UK
5. Department of Mathematics, Physics and Electrical Engineering Northumbria University Newcastle Upon Tyne UK
6. Department of Space and Climate Physics Mullard Space Science Laboratory University College London Surrey UK