From the University of Melbourne, I’m sure Julia and Flannery are thrilled at this paleo-reconstruction, and of course, the blame goes on Mann, er man. I find it interesting though that the lead author, Dr Joelle Gergis, thinks of her science work as a “guerrilla war”. From “Science Matters”:
Seems like just another angry Michael Mann clone to me.
At the outset of this project in 2010, they said:
Australian climate scientist Professor Chris Turney from the University of Exeter, UK says this meeting will allow us to place Australian records in a global context and gives us an opportunity to fully understand natural climate variability.
Yet in the current press release, the phrase “natural climate variability” is not mentioned. WUWT?
1,000 years of climate data confirms Australia’s warming
In the first study of its kind in Australasia, scientists have used 27 natural climate records to create the first large-scale temperature reconstruction for the region over the last 1000 years.
The study was led by researchers at the University of Melbourne and used a range of natural indicators including tree rings, corals and ice cores to study Australasian temperatures over the past millennium and compared them to climate model simulations.
Lead researcher, Dr Joelle Gergis from the University of Melbourne said the results show that there are no other warm periods in the last 1000 years that match the warming experienced in Australasia since 1950.
“Our study revealed that recent warming in a 1000 year context is highly unusual and cannot be explained by natural factors alone, suggesting a strong influence of human-caused climate change in the Australasian region,” she said.
The study published today in the Journal of Climate will form the Australasian region’s contribution to the 5th IPCC climate change assessment report chapter on past climate.
She said using what is known as ‘palaeoclimate’ or natural records, such as tree rings, corals and ice cores, are fundamental in evaluating regional and global climate variability over centuries before direct temperature records started in 1910.
Dr Gergis collated these natural records provided by decades of work by more than 30 researchers from Australia, New Zealand and around the world.
The reconstruction was developed using 27 natural climate records calculated in 3000 different ways to ensure that the results were robust.
She said reconstructions of regional temperature not only provide a climate picture of the past but also a significant platform to reduce uncertainties associated with future climate variability.
The study is part of a global collaboration, PAGES, Past Global Changes Regional 2K initiative, which is working to reconstruct the last 2000 years of climate across every region in the world in order to reduce uncertainties associated with future climate change projections.
Collaborators include the Climate Change Research Centre and the ARC Centre of Excellence for Climate System Science, University of New South Wales where the climate modeling was conducted.
The study was funded by the Australian Research Council, Federal Department of Climate Change and Energy Efficiency and Past Global Changes (PAGES).
Of course, in true Mannian form, the press release has no link to the actual paper. We aren’t supposed to look to closely at this things don’t you know?
And, searching the JoC journal index of the most recent issue shows no mention of this paper, so it must have just been accepted. Does anybody have a copy of this in part or full?
UPDATE: via Marc Hendrickx, thanks.