1. Scott Polar Research Institute; University of Cambridge; Lensfield Road, Cambridge England United Kingdom
2. Centre for Polar Observation and Modelling, Bristol Glaciology Centre, School of Geographical Sciences; University of Bristol; Bristol England United Kingdom
3. Department of Geomatics; University of Newcastle; Newcastle-upon-Tyne England United Kingdom
4. Institute of Geography; Russian Academy of Sciences; Moscow Russia
5. Centre for Polar Observation and Modelling, Department of Space and Climate Physics; University College London; London England United Kingdom
6. Arctic and Antarctic Research Institute; St. Petersburg Russia
7. Alfred-Wegener-Institut für Polar- und Meeresforschung; Bremerhaven Germany