James Wyatt, Australian Antarctic Program Partnership, Hobart, Australia, Nathaniel L. Bindoff, Univ Tasmania, Hobart, TAS, Australia, Annie Foppert, Australian Antarctic Program Partnership, Hobart, TAS, Australia, Helen Elizabeth Phillips, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia and Stephen R Rintoul, Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC), Hobart, TAS, Australia; Commonwealth Scientific and Industrial Research Organisation (CSIRO), Environment, Hobart, TAS, Australia