Prof. Julie Arblaster - Honours Projects

Influence of the Interdecadal Pacific Oscillation on Antarctic sea ice

Supervisor: Julie Arblaster and Ariaan Purich
Field of Study: Climate modelling
Preferred Program: Atmospheric science

A major challenge confronting the climate research community is that despite global warming, total Antarctic sea ice coverage increased over 1979–2015. The phase change of the Interdecadal Pacific Oscillation (IPO) from positive to negative over this period has been shown to have influenced Antarctic sea ice trends in the Pacific sector. However, having only one positive and one negative phase of the IPO over the satellite era makes it difficult to differentiate between interdecadal variability and long-term trends. This project will use existing model output from the Coupled Model Intercomparison Project phase six (CMIP6) archive to examine the role of the IPO on Antarctic sea ice over long timescales. Tropical to high-latitude relationships will be explored under both pre-industrial and global warming conditions, and the regionality of IPO-related sea ice anomalies in the models will be examined. This will help us gain a better understanding of past and future changes in Antarctic sea ice and its key atmospheric drivers.

Contact Julie Arblaster for further information