The Australian has published a piece by William Kinimonth arguing that global warming is a natural phenomenon. His argument in his book was that the models used by the IPCC were one dimensional and didn’t account for the flow of energy from the tropics to the poles. This is, of course, wildly incorrect as anyone can find out in minutes on the net. So he’s dropped that argument, but that means that all he has left is this:
IPCC has made much of the apparent ability of computer models to simulate the climate system; computer models that have been tuned to reproduce the main statistical characteristics of the global climate notwithstanding the uncertainty of representing many of the climate processes. The computer models are claimed to be able to respond correctly as one or more of the boundary conditions are changed but this has not been demonstrated.
Colour me old-fashioned, but if someone wants to argue that the current warming is
natural, I’d like to see their model and data showing this. Complaints that the models currently in use are wrong in same vague unspecified way just don’t do much for me.