1. Environmental Change Research Centre, Department of Geography, University College London, London WC1E 6BT, UK.
2. Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, UK.
3. Institute of Archaeology, University College London, London WC1H 0PY, UK.
4. Centre for Human Evolution Research, The Natural History Museum, London SW7 5BD, UK.
5. Department of Britain, Europe and Prehistory, British Museum, London N1 5QJ, UK.
6. Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA), Spanish Council for Scientific Research (CSIC), 08034 Barcelona, Spain.
7. Institute for Basic Science, Center for Climate Physics, Busan 46241, South Korea.
8. Department of Climate System, Pusan National University, Busan 46241, South Korea.
9. Pusan National University, Busan 46241, South Korea.
10. Scott Polar Research Institute, University of Cambridge, Cambridge CB2 1ER, UK.