I don't imagine for one second that Anthony Watts or his troops have the slightest clue about tree ring reconstructions. They probably don't even know where Yamal is located. It doesn't stop Anthony Watts from making a post about them a 'sticky'. He thinks he's gloating about something that McIntyre is supposed to have done. But the real story is a sorry saga and McIntyre as usual comes out looking like a belligerent, dishonest fool.
To read some about it I'll direct you to these two articles on RealClimate.org.
- This first one is the most recent. It's about a new paper by Briffa et al and it includes some discussion of where McIntyre is wrong.
- This second one was written a year or so ago and documents more of the deceptions and wrong-headedness of Stephen McIntyre.
There is a third link, this time to dismissal of an appeal, showing the lengths McIntyre is prepared to go to harass scientists in a vexatious manner.
If you want to read more about that odious character (who shows signs of paranoia, conspiracy ideation and obsessiveness - and they are the more endearing of his attributes), there is a whole heap of stuff to read. You can start here or here to get the idea.
PS In case anyone is in doubt, during one of the peaks of the attacks on scientists over the years, here is what McI orchestrated and took part in from his own website. Vexatious in the extreme. From SkepticalScience.com:
Then came the storm. Between 24 July and 28 July, CRU received no less than 60 FoI requests, and 10 more between 31 July and 14 August.To compare, most scientists would never in their entire career get even one FOI request.