DeSmog Leaks Advance Copy of Think Tank’s IPCC Attack it says, and it is so. Presumptuously it calls itself the Independent SPM, but I think Septics SPM is more appropriate. Wot they have done is to draw up their own fantasy list of conclusions they would like the AR4 to make, based on the April 2006 IPCC draft.
Anyway, now this thing has been leaked everyone will comment. Including me. First off, they are trying to puff their piece as written by “fully qualified experts” as opposed to the IPCC faceless bureaucrats, nicely forgetting that the IPCC is written by the scientists. As if to confirm their lack of status, the author list is thin and puffed out by their various qualifications, including (absurdly) use of FRMS. Also somewhat notable is those not present on the authors list: Lindzen, McIntryre (even though McK is coordinating it).
But what about (sigh) what they actually have to say. I doubt many people will read much of it: its the usual list of quibbles with the important bits missed out. To pick up a few bits:
Urban heat islands: they say The urban heat island effect is real, and causes temperature records from urban and
suburban areas to have an upward trend unrelated to climatic changes. [184.108.40.206] Which is a gross misrepresentation, since the IPCC actually cites various studies to say that UHI effects are negligible on global trends (see http://en.wikipedia.org/wiki/Urban_heat_island if you want the refs).
Solar: they say: There may be an upward trend in recent total solar irradiance, depending on which of several data sets is used… One series exhibits a notably higher trend, suggesting that contemporary solar output is following a general upward trend [220.127.116.11.2]. Again a gross misrep: the purported upwards trend in ACRIM is probably an artefact.