McKitrick: 'In a private email to McIntyre, Marcott made a surprising statement. In the paper, they had reported doing an alternate analysis of their proxy data that yielded a much smaller 20th-century uptick, but they said the difference was “probably not robust,” which implied that the uptick was insensitive to changes in methodology, and was therefore reliable. But in his email to McIntyre, Marcott said the reconstruction itself is not robust in the 20th century: a very different thing. When this became public, the Marcott team promised to clear matters up with an online FAQ.
It finally appeared over the weekend, and contains a remarkable admission: “[The] 20th-century portion of our paleotemperature stack is not statistically robust, cannot be considered representative of global temperature changes, and therefore is not the basis of any of our conclusions.”
Now you tell us! The 20th-century uptick was the focus of worldwide media attention, during which the authors made very strong claims about the implications of their findings regarding 20th-century warming. Yet at no point did they mention the fact that the 20th century portion of their proxy reconstruction is garbage'
Marcott's thesis has a series of diagrams in an identical style as the Science article. The proxy datasets are identical...the diagrams in the thesis lack the closing uptick of the Science' -- In addition to difference in closing uptick, important reconstruction versions were at negative values in the closing portion of the thesis graphic, while they were at positive values in the closing portion of the Science graphic'
Prof. Pielke Jr. rips Marcott's Hockey Stick study claims: 'What that means is that this paper actually has nothing to do with a 'hockey stick' as it does not have the ability to reproduce 20th century temperatures in a manner that is 'statistically robust.' The new 'hockey stick' is no such thing as Marcott et al. has no blade'
New Climate Scandal Exposed: Will AP & NYT Retract Articles?! ‘Gross misrepresentation of the findings’ of New Hockey Stick Paper – Claimed Hottest temps in 4000 years! Now accused of ‘skirting awfully close to crossing the line into research misconduct’