The author of a report that lays bare the connection between climate change and extreme bushfires has expressed his ''frustration'' with Prime Minister Tony Abbott and Environment Minister Greg Hunt for their refusal to accept scientific consensus on climate change.

Professor Will Steffen, who co-authored the soon-to-be-released bushfire report by the Climate Council, was responding to Mr Abbott's assertion in a newspaper interview with leading climate sceptic Andrew Bolt that drawing a link between the savage fires now plaguing NSW and climate change was ''complete hogwash''.

The Climate Council report, a summary of which was revealed by Fairfax Media on Friday, found a clear link between rising temperatures and a longer, more dangerous bushfire season in south-eastern Australia.

''We would certainly prefer that this debate be elevated to the real scientific facts as are reported in the scientific literature and as are assessed very competently by the IPCC, the CSIRO and the Bureau [of Meteorology] and the scientists we rely on,'' Professor Steffen said.