Shaun Marcott – the latest fellow to claim he’s discovered “unprecedented” warming in recent years – made a stunning admission to Steve McIntyre over the weekend. Ross McKittrick has the details in the Financial Post:
Meanwhile, 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.”
In other words, the most recent part of the data – the very part Marcott et al claimed “proved” the dramatic warming – was junk.
McKittrick also details how Marcott redated ice core tops (if that sounds like fudging data to you, that’s because it is) and grafted current temperature data (which can show variations annually at worst) on top of the past data reconstruction (which smoothed out centuries of variations).
For those who are keeping track (admittedly not easy given the numbers), we have now reached forty-three examples of data manipulation, errors, and other shenanigans from global warming alarmists, and that’s just from what I’ve been able to blog on this subject since Climategate broke in November of 2009, just under three and a half years ago.
I am amazed that anyone still believes this stuff.
Cross-posted to the right-wing liberal