Well thats what RP Sr sez. Although he immeadiately gets cold feet and adds “Or, At Best Cherrypicking”. I think he should make up his mind – if he is going to throw around a rather hard term like “errors” in the title he shouldn’t wimp out to “or at best…” a moment later.
So, first off, does he find any errors? No, of course not. None of the 4 things he lists are wrong. And the person cherry picking appears to be RP.
The first one is about “… snow cover have declined on average in both hemispheres.” Which of course it has (fig SPM-3). Or, if you prefer, the graph RP directs you to. His complaint appears to be that “areal coverage in the Northern Hemisphere has actually slightly increased since the later 1980s!” But this is blatant cherry picking on RPs part, and descending to the Lubos level – claiming that since T hasn’t gone up since the ENSO in 1998 then GW must be all nonsense.
For point 3 (yes I’m skipping 2 and 4 – they aren’t errors either, however you interpret them; on pt 2 I think RP is obsessing over one paper, but not having read it I won’t try and find the error if there is one), RP complains that observations of increased WV in the atmos (which the IPCC reports) conflicts with observations of no change in ppn. But these two things simply aren’t in conflict. Firstly, the WV increase is “1.2 ± 0.3% (95% confidence limits) from 1988 to 2004″ so isn’t comparable to the 1979-2004 that RP uses. Secondly, ppn is noisy so (not totally sure of this) a 1% change might well be below detectability. Thirdly, WV could increase without any change in ppn – there is no hard constraint forcing the two to go together (and indeed, seasonally they are observed not to).
Is RP setting out his stall for an invite to a remake of TGGWS?
[Update: the article in scitizen originally said it was reviewed by RealClimate. It wasn't; they have removed us. Leaving 3 other named reviewers: Dr Ilan Koren, Dr Gavin Foster and Dr Guillaume Dupont-Nivet, who may or may not have reviewed it -W]