Wilma C. G. Huneke, Australian National University, Canberra, ACT, Australia; Australian Centre for Excellence in Antarctic Science; Centre of Excellence in Climate Extremes, Canberra, ACT, Australia, Andrew M Hogg, Australian National University, ACCESS-NRI, Canberra, ACT, Australia and Adele K Morrison, Australian National University and Australian Centre for Excellence in Antarctic Science, Canberra, ACT, Australia