Eric Mortenson, United States, Andrew Lenton, CSIRO Hobart, Hobart, TAS, Australia, Thomas W. Trull, Commonwealth Scientific and Industrial Research Organisation, Marine and Atmospheric Research, Antarctic Climate Ecosystems Cooperative Research Centre, Hobart, TAS, Australia, Xuebin Zhang, CSIRO, Oceans & Atmosphere, Centre for Southern Hemisphere Oceans Research (CSHOR), Hobart, TAS, Australia, Elizabeth Shadwick, CSIRO Marine and Atmospheric Research, TAS, Australia and Matthew Chamberlain, CSIRO Australian Resources Research Center, Hobart, WA, Australia