[2][3] Tim Flannery, the 2007 Australian of the Year, was one of her mentors during the program aimed at training outstanding young scientists to help bridge the communication gap between science and public policy.
[2][6] The Aus2K group studied Australasian climate variability over the previous 2,000 years, coordinating the development of a 1,000-year temperature reconstruction of the region for the IPCC Fifth Assessment Report.
[2] One of the studies involved using climate proxies such as tree-rings, lake sediments, corals, and ice cores to recreating 3000 different historical contexts[6][7] including the meteorological conditions the First Fleet endured, as documented by William Bradley aboard the HMS Sirius,[8][9] and examining claims about a mediaeval warm period.
[6] Gergis was the lead author in a study published in the Journal of Climate and drawing on decades of work by 30 scientists.
[2] In February 2018, she was selected to serve as a lead author for the Intergovernmental Panel on Climate Change (IPCC) Sixth Assessment Report.