Re: LOL Citing Steve McIntyre - says it all, Nigel.
https://www.sourcewatch.org/index.php/Steve_McIntyre
"Stephen McIntyre is the primary author of the blog Climate Audit, noted for its many articles skeptical of climate change. He is a prominent critic of scientific studies of temperature records of the past 1000 years that show increasing global temperatures.
Says it all really. So lefty hatchet mob attacks the man, not the message. So far, so normal for climate 'science'. Billions in dark money from slush funds like the good'ol Tides Foundation funneled into misinformation providers like The Center for Media and Democracy. Meanwhile, back in the real world..
Many years ago, some chap decided making thermometers out of wood was a really smart idea. This lead to the infamous Hockey Stick, used to pretend global warming was real, modern warming was 'unprecedented' and the LIA and MWP absolutely did not exist, because CO2 dogma can't explain those. The Hockey Stick was plastered everywhere and used as 'proof' of global warming.
Except of course wooden thermometers don't work. And even lead to some lawsuits between Mann and others, one of which is still slowly working it's way through the legal system, and may be tested in court real soon now. This summarises a lot of the background-
https://climateaudit.org/2023/10/23/was-michael-mann-exonerated-by-the-post-climategate-investigations-as-was-decided-by-the-dc-court-of-appeals/
but more interesting is..
https://climateaudit.org/2023/11/24/mbh98-new-light-on-the-real-data/
The famous MBH98 reconstruction was a splice of 11 different stepwise reconstructions with steps ranging from AD1400 to AD1820. The proxy network in the AD1400 step (after principal components) consisted 22 series, increasing to 112 series (after principal components) in the AD1820 step. Mann reported several statistics for the individual steps, but, as discussed over and over, withheld the important verification r2 statistic. By withholding the results of the individual steps, Mann made it impossible for anyone to carry out routine statistical tests on his famous reconstruction.
Which is one of the reasons why Mann's science was junk science. Especially as tabloid rags like Nature heavily promoted the Hockey Stick, yet for 25 years have refused to allow MBH98 to be reproduced. This is very bad science-
Although Mann claimed statistical “skill” for each of the eleven steps, he did not archive results of the 11 individual step reconstructions. In 2003, we sought these results, ultimately filing a formal complaint with Nature. But, to its continuing discredit, Nature supported Mann’s withholding of these results. Despite multiple investigations and litigations, Mann has managed to withhold these results for over 25 years.
But now some of the final pieces of the puzzle have been figured out-
Soderqvist’s discovery that MBH98 used six North American PCs not only refutes Mann’s claim that he used two North American PCs, but refutes his claim that he used Preisendorfer’s Rule N to select two PCs. Soderqvist’s discovery raises a new question: how did Mann decide to retain six North American PCs in the AD1400: it obviously wasn’t Preisendorfer’s Rule N. So what was the procedure? Mann has never revealed it...
The takeaway is that, for a large-scale temperature reconstruction, one should not use any PCs below the PC1. The reason is blindingly obvious once stated: the PC2 and lower PCs contain negative signs for approximately half the locations i.e. they flip the “proxies” upside down. If the tree ring data are indeed temperature “proxies”, they should be used in the correct orientation.
Again, a common problem in climate 'science', and also controversial given other pseudo-science like PAGES2K did the same thing. And also included the Hockey Stick stuff while claiming to be independent. But this is why climate 'scientists' hate McIntyre because McIntyre knows data analysis far better than they do, and had a frequent habit of making them look like idiots. So of course they attack him.
So good timing for the court case, and hopefully may finally mean MBH98 is retracted and consigned to the garbage bin of history. Except that Hockey Stick has cost us billions..