Professor Pitman was a lead author on the IPCC's 2001 and 2007 reports. He is also the co-director of the Climate Change Research Centre at the University of New South Wales.
Professor Pitman says sceptics have used the IPCC's error to skew the climate change debate.
"Climate scientists are losing the fight with the sceptics," he said.
"The sceptics are so well funded, so well organised. "They have nothing else to do. They don't have day jobs so they can put all their efforts into misinforming and miscommunicating climate science to the general public, whereas the climate scientists have day jobs and actually isn't one of them.
"All of the efforts you do in an IPCC report is done out of hours, voluntarily, for no funding and no pay, whereas the sceptics are being funded to put out full-scale misinformation campaigns and are doing a damn good job, I think.
"They are doing a superb job at misinforming and miscommunicating the general public, state and federal governments."
And he says if scientists lose the climate change debate, it would be "potentially catastrophic".
http://www.abc.net.au/news/stories/2010/01/25/2800992.htmThe denier idiots always work this way. It is essentially a game of wack a mole. They put up stuff and you have to debunk it. All they have to do to "win" is to put up bunk at a faster rate than you can debunk. I think the best way to deal with them is to make a salient point or two and then ignore their foolish rants.