Polina Sholeninova, Australian National University, Canberra, AUSTRALIA, Adele K Morrison, Australian National University and Australian Centre for Excellence in Antarctic Science, Canberra, ACT, Australia, Andrew M Hogg, Australian National University and ARC Centre of Excellence for Climate Extremes, ACCESS-NRI, Canberra, ACT, Australia and Annie Foppert, Australian Antarctic Program Partnership, Hobart, TAS, Australia; University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia