Developing methods for assessing the impacts and implications of climate change, including collating greenhouse gas emissions inventories; developing climate-pattern-scaling methods; using simple climate models to explore the full uncertainty space in projections of future climate change from more complex models; and using such large ensembles of projections to quantify changes in the likelihood and severity of extreme weather events.

Detection and attribution of long-term changes in stratospheric composition and dynamics; statistical analysis of trends in stratospheric trace species and in particular ozone trends; long-term changes in ozone levels over Antarctica and New Zealand; global analyses of trends in ozone measured by satellite; trends in lower stratospheric temperatures; surface UV radiation in the polar regions.

Analysis of the dynamical attributes of the polar vortices and the interaction between mid-latitude planetary wave activity, the structure of the polar vortices, and the resultant interannual difference in the severity of polar ozone depletion.