Ian ALLISON has studied Antarctic ice and climate for more than 50 years, participated in or led 25 research expeditions to Antarctica and published over 170 papers on Antarctic science. His fields of expertise include ice shelf-ocean interaction, Antarctic weather and climate, sea ice, and the mass budget of the Antarctic ice sheet. He is an Adjunct Professor at the University of Tasmania, a Research Associate of Institute of Marine and Antarctic Studies, University of Tasmania and was formerly a Program Leader at the Australian Antarctic Division. Ian has been actively involved for many years in international collaboration in Antarctic science through bodies such as the International Union of Geodesy and Geophysics, the Scientific Committee on Antarctic Research and the World Climate Research Programme. He was co-Chair of the Joint Committee for the International Polar Year 2007–2008 and contributed as a Lead Author to three Assessment Reports of the Intergovernmental Panel on Climate Change. Ian is an Officer of the Order of Australia and a Fellow of the Australian Academy of Science and of the International Union of Geodesy and Geophysics.