full Professor in July 2020. Research interests Arblaster developed an interest in meteorology during the first year of her science degree, and subsequently switched the focus of her degree to study Atmospheric Science. During her time as a student she completed a summer internship at the Bureau of Meteorology, which inspired her to learn more about the climate system. Arblaster's research focuses on the global climate system and mechanisms of past, recent and future climate change. In 2009, she coauthored a paper connecting small changes in the sun's activity during the 11-year solar cycle to mechanisms in the stratosphere and the oceans. Modelling more than a century of data, the researchers were able to predict regional weather patterns such as the Indian monsoon and winter rainfall in North America. The results also showed that global warning could not be adequately explained by the solar cycle. Identifying and isolating the impact of small stratospheric changes was an important step in developing accurate predictive models. Arblaster uses climate models to understand shifts in the Southern Hemisphere atmospheric circulation such as the Southern Annular Mode (SAM) and the Indian Ocean Dipole (IOD), linking tropical variability and climate extremes. Arblaster is interested in the interplay between the predicted recovery of the Antarctic ozone hole over coming decades and greenhouse gas increases in future climate projections. She is developing models that can demonstrate the likelihood of extreme weather events and the contribution of human-caused climate change to such events. Arblaster was a contributing author to the Working Group I contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, 2007, and a lead author on Chapter 12, Long-term Climate Change: Projections, Commitments and Irreversibility, of the Working Group I Contribution to the Fifth Assessment Report of the IPCC. This chapter reviewed the available evidence to understand how the world's climate might have changed by the middle of this century and beyond. Notably, this IPCC report was the first to outline how much additional carbon dioxide can be emitted to keep global temperatures below specific thresholds. Arblaster is a member of the World Climate Research Programme Stratospheric-Tropospheric Processes and their Role in Climate (SPARC) scientific steering group. She was a lead author on Scientific Assessment of Ozone Depletion: 2014 from the World Meteorological Organization and others. Some of the most recent climate models suggest that the impact on "climate sensitivity" may be worse