I specialise in numerical modelling of the Antarctic ice-sheet, both at the continental-scale and at the scale of individual glaciers. Most recently my focus has been on the future response of the Antarctic ice sheet to anthropogenic greenhouse gas emissions, especially in terms of quantifying the likely magnitude and timing of future contribution to sea-level. My interest in this issue is in both science and policy aspects, and I currently hold a 5-year Royal Society of New Zealand fellowship aimed refining twenty-first century sea-level projections from modelled ice sheet loss.
Although the last 10 years of my career have been largely focused on numerical modelling, I have an empirical background in geology and glaciology, and have carried out fieldwork across the globe, from the Arctic to the Antarctic. I collaborate with modellers and field scientists around the world and am an active participant in model intercomparison exercises such as ISMIP6, which will contribute to the sixth IPCC assessment report. I am part of the Lead Author team for the ‘Oceans, Cryosphere and Sea Level’ chapter of the next IPCC assessment report (AR6).