Continued from Part 1, Part 2 One more bit of review before we get to Ammann’s answer. As an excuse for not answering the request of the House Energy and Commerce Committee about the R2 statistic, Mann told them that his “colleagues and [himself] did not rely on this statistic” in the following terms: The […]
Continued from Ammann at AGU (#1). I’m going to give a fairly brief account of previous attempts to get the residual series and/or cross-validation R2 from Mann, including inquiries to Mann, N.S.F., through Nature, by Climatic Change, by Natuurwetenschap & Techniek and by the House Energy and Commerce Committee. As you will see, no one […]
Some of you are looking for digital versions of the multiproxy results. For convenience, here is a digital collation of major reconstructions used in spaghetti graphs. The collation text is here, and URLs to source data can be extracted from line items. It’s not been made user-friendly.
Ammann made a presentation at the same AGU session as me, spending a considerable amount of time criticizing us — though with nothing new to say that we haven’t already rebutted here and in print. There was time for one question (AGU is fanatical about schedules) and I was recognized. So here’s my question to […]
I don’t think that people entirely appreciate the absurdity of the views of Gavin and Rasmus that consideration of persistence in climate somehow "pitches statistics against physics". If climate scientists are seeking more familiar authority for just how preposterous this claim is, they need look no further than Trenberth [1984], previously discussed on this blog […]
I mentioned a few days ago that a serious discussion had threatened to break out at realclimate, where Demetris Koutsoyannis had posted up some astute commentary. He has recently dropped in here as well. I was unfamiliar with his work prior to this recent introduction. He has written extensively on climate, much of which has […]
Our "blogfather", realclimate, has been celebrating their one-year anniversary (congratulations to them) and have been reflecting on their year. Kenneth Blumenfeld, who’s posted here once or twice, posted an interesting comment at realclimate, about how his undergraduates were now investigating climate change issues online, that they "very badly wanted to get behind RC", but wanted […]
A few days ago, Science retracted the 2005 Hwang paper. But it turns out that the retraction was wrong, since the retraction left 2 lines pending. Now Science is trying to figure out how to re-retract the paper. You’d think that they could have got the retraction right. Update Jan. 8, 2006: It appears that […]
Many Americans of a certain age will recall an American radio commentator, called Paul Harvey, who ran ironic commentaries entitled "The End of the Story". They were short segments leading you to expect one answer and Harvey’s closing comment explaining what happened would reverse the field altogether. I once heard a commentary on dendrochronology, in […]
Warning – a serious discussion has unexpectedly broken out at realclimate. See comments 84 and 85 here. I don’t think that the IID team is faring very well.
Climate Audit 