1. Research School of Earth Sciences; The Australian National University; Canberra ACT Australia
2. Lawrence Livermore National Laboratory; Livermore California USA
3. Woods Hole Oceanographic Institution; Woods Hole Massachusetts USA
4. Division of Geological and Planetary Sciences; California Institute of Technology; Pasadena California USA
5. Bristol Isotope Group, Department of Earth Sciences; University of Bristol; Bristol UK
6. The Godwin Laboratory for Palaeoclimate Research, Department of Earth Sciences; University of Cambridge; Cambridge UK