If we’re talking about the Hockeystick, we’re talking about the Hockeystick. This was the Mann Bradley and Hughes 1998 paper containing the iconic hockeystick image used by the UN IPCC.
If you want to talk about the other succeeding papers, I’m willing to do that as well. However, first I want to actually hear you say that the Hockeystick, the original one that we were talking about, has been debunked. If you are unwilling to admit that you were wrong about that, there’s no point in my continuing.
[QUOTE=GIGObuster]
No, the point of using the hockey stick controversy as a good measuring stick
to see who is an skeptic and who is a denier still stands. People who stomp their feet and continue to claim it “debunked” can not be taken seriously. They willfully ignore that other scientific organizations supported Mann’s conclusions and then ignore his more recent reconstruction.
Nasa, Nature, and several scientific researchers and panels supported and confirmed the reconstruction by Mann and others.
All readers should notice how deftly other reconstructions like the ones posted by Nasa are ignored by deniers to continue to say “debunked”. An skeptic could take the biased Wegman report and the the more reliable ones and just be able to report that there is controversy, I still have to say that people pushing just for “debunking” are deniers. Not only of the overwhelming support of the researchers doing the reconstructions, but of the reports in scientific periodicals.
[/quote]
Read what the Wegman Report said again. The so-called “independent” reconstructions are not independent. While each of them has their own flaws, they all depend strongly on a small group of tree-ring data in the Southwestern US called “bristlecone pines”. The NAS report recommended that these pines not be used in reconstructions, as they give bogus results … but noooo, Mann and his friends have continued to depend upon them up until today. It’s not like they don’t know the bristlecones are flawed. From the CRU emails, Ed Zorita to the usual suspects.
Mann and his friends, of course, have ignored this clear recommendation and continued to use the bristlecones right up to his most recent paper. As an expert on the hockeystick controversy, perhaps you could give us a cogent scientific reason for continuing to use discredited proxies after even your friends tell you not to? …
You say the new papers agree with the Hockeystick. Didn’t you notice the topic of this thread? Haven’t you been following the news? The CRU tapes reveal that the very “researchers doing the reconstructions” are the ones that are currently shredding their emails so that their actions don’t come to light. Those are the “researchers” that you refer to, the ones that review each other’s latest feeble attempt to show “yes, the Hockeystick really is really real, really” papers and give them a free pass.
Of course they agree. They are all using some combination of the same bogus proxies, including the bristlecones (despite the bristlecone records being controverted by the NAS, the Ababneh thesis, and other studies), the Yamal “most important tree in the world”, and the upside-down Tiljander proxies to try to prop up a false claim. Garbage in, garbage out. Since they’re putting the same garbage in, you should not be surprised when the same hockeystick garbage comes out.
The Tiljander proxies are a great example of Mann’s stupidity. In addition to once again recycling the tired bristlecone proxies, the Tiljander proxies were used by Mann in his most recent attempt (2008) to rehabilitate the hockeystick claims. Unfortunately, although they go up strongly in the recent past, the Tiljander proxies are said by their original author to react negatively to temperature … which means that they go up when the temperature goes down. Mann was so desperate to find a proxy that shows “unprecedented warming” he used them upside-down without even noticing … then denied he’d done it … then said it makes no difference. Makes no difference, my ass.
The best part of the Tiljander proxies (lake bed sediment records) is that the guys who measured them and wrote about them put a big sign on them that said WARNING - DO NOT USE FOR PERIODS AFTER ABOUT 1800 BECAUSE OF FALSE READINGS FROM AGRICULTURAL SEDIMENT. Mann, of course, knows better than them, so in addition to using them upside down, he used them all the way up to the present, which gave him another lovely hockeystick to present to the world. And we know it must be science, because his friends peer reviewed it. But GIGObuster knows that’s all OK, he is a true believer.
People are referred to my analysis at “Can’t See The Signal For The Trees” for an interesting look at the proxies in the Mann 2008 “Here’s another Hockeystick, see, I was right” study. There is also a cluster analysis of the proxies at Comment 127 on the same page, GIGObuster, that might be of more interest to you, as it contains pictures and no math.
GIGObuster, point me to a paper trying to prop up the Hockeystick that does not use those bogus proxies, and I’ll be happy to talk about it. But first, you have to admit that Mann’s original Hockeystick is trash, flawed both by bad math and bogus proxies. Man up, you were wrong about the Hockeystick, admit it. If you can’t admit when you were wrong, there’s no sense in continuing.
Mann’s original Hockeystick is unlike the other subsequent “Hockeystick wannabe” reconstructions in one way. They retained the bogus proxies, but at least they got the math right. But with bogus proxies, even plain old averaging gives a hockeystick shape.
But you knew all of that, about Yamal and Tiljander and the Ababneh thesis and the difference between uncentered and centered principal component analysis and proxy cluster analysis, of course, because you’re an expert on the Hockeystick Controversy. After all, you’ve read the wikipedia article, and it’s approved by William Connolley, so it must be right …
PS - You say “other reconstructions like the ones posted by Nasa”. A link would be good so we can find out what that means.