1. Getech Kitson House, Elmete Hall, Elmete Lane Leeds LS8 2LJ United Kingdom
2. School of Earth and EnvironmentUniversity of Leeds Leeds LS2 9JT United Kingdom
3. School of Environmental SciencesUniversity of Hull Hull HU6 7RX United Kingdom
4. School of Geographical Sciences, Bristol Glaciology CentreUniversity of Bristol Bristol United Kingdom