1. School of Mathematics and Physics, University of Queensland,St Lucia, Queensland 4072, Australia
2. Centre for Isotope Research, University of Groningen, Groningen, The Netherlands
3. Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK
4. Global Change Research Institute (CzechGlobe), Czech Academy of Sciences, 60300 Brno, Czech Republic
5. Department of Geography, Faculty of Science, Masaryk University, 61137 Brno, Czech Republic
6. Swiss Federal Research Institute (WSL), 8903 Birmensdorf, Switzerland
7. Department of Meteorology, University of Reading, Earley Gate,PO Box 243, Reading RG6 6BB, UK
8. Centre for Astrophysics, University of Southern Queensland,West Street, Toowoomba, Queensland 4350, Australia