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dendrochronology, Tag
- Tree Rings Reveal Largest Solar Storm EVAH! Tue, 17 Oct 23, 8:00pmGuest “Well, the largest yet identified,” by David Middleton NEWS RELEASE 9-OCT-2023 Researchers identify largest ever solar storm in ancient 14,300-year-old tree rings Peer-Reviewed Publication UNIVERSITY...
- Oh Mann! Paper demonstrates that tree-ring proxy temperature data is ‘seriously compromised’ Fri, 16 Aug 13, 5:31pmMichael Mann won’t be happy about this. A new paper now in open review in the journal Climate of the Past suggests that “modern sample bias “has “seriously compromised” tree-ring temperature...
- The East Anglia Rococo Mon, 17 Jun 13, 5:01pmSteve McIntyre has a new analysis up, one that has a strong headline. Though as he says, “not in so many words”, but more about techniques and exclusions. He writes: Briffa Condemns Mann Reconstructions Not in...
- Dendros stick it to the Mann Mon, 26 Nov 12, 1:04pmPeople send me stuff. In case you don’t know, ITRDBFOR is an electronic forum (a listserver) subscribed to by most of the world’s dendrochronologists. What is most interesting is that Hughes and Briffa are co-authors...
- Mann’s hockey stick disappears – and CRU’s Briffa helps make the MWP live again by pointing out bias in the data Mon, 29 Oct 12, 5:17amShock, awe. Untruncated and unspliced data used in a new paper from Briffa and Melvin at UEA restores the Medieval Warm Period while at the same time disappears Mann’s hockey stick. Here’s figure 5 that tells...
- New isotope based temperature reconstruction using McIntyre’s ‘Starbucks hypothesis’ tree core samples Wed, 12 Sep 12, 12:39amA new paper in GRL published Sep 6th Secular temperature trends for the southern Rocky Mountains over the last five centuries makes use of some tree core sample data gathered by Steve McIntyre and Mr...
- This is what global cooling really looks like – new tree ring study shows 2000 years of cooling – previous studies underestimated temperatures of Roman and Medieval Warm Periods Tue, 10 Jul 12, 8:01amSince Princeton’s Dr. Michael Oppenheimer conflated weather with climate last week, proclaiming a short lived heat wave as “This is what global warming really looks like” in a media interview, it seems...
- Linking the ENSO and PDO induced rainfall of the Pacific Northwest to proxy data in tree rings and lake sediments Thu, 5 Jul 12, 8:30pmFrom Penn State , another Mann paper with proxy sets, and a divergence problem. At least they are talking about the MWP, or as they call it, the Medieval Climate Anomaly which had been erased in previous papers Mann had …...
- The Neo Paleo Twitter war of Mann -vs- D’Arrigo Fri, 15 Jun 12, 4:29pmIt seems that Columbia’s Rosanne D’Arrigo thinks Mann’s tree ring study isn’t representative proxies for volcanic eruptions, nor good for dendrochronology, though Mike Mann seems to think so...
- Revkin on the Gergis et al ‘on hold’ affair Wed, 13 Jun 12, 12:14amI promised Andrew Revkin yesterday that I’d give his post on Gergis et all some attention, because he’s done a good job of summarizing it all, plus getting some other angles, such as that of Retractionwatch...
- Yamal that hurts! CRU gets touchy, responds to McIntyre and Montford without naming them Wed, 30 May 12, 2:41amFrom the “he who must not be named” department, comes this sure to be future McI-fodder. UEA/CRU responds in a press release, authored by Tim Osborn, an excerpt: ===========================================================...
- McIntyre rebuts Schmidt’s Rant on Yamal Mon, 14 May 12, 11:54pmBy Steve McIntyre Two days ago, NASA blogger Gavin Schmidt posted an extended rant against me at Real Climate, a rant directed in part at my recent poston Yamal...
- Another reason trees don’t make good treemometers – new tree ring data bias discovered Wed, 21 Mar 12, 2:03am[Note: My first post in which I had written commentary mysteriously lost all of its content, posting nothing but white space. This is some sort of internal wordpress error, but has never happened before. I have some elements...
- Mann: Trees aren’t behaving like I want them to – volcanoes to blame Mon, 6 Feb 12, 7:15pmFrom Penn State Tree rings may underestimate climate response to volcanic eruptions Some climate cooling caused by past volcanic eruptions may not be evident in tree-ring reconstructions of temperature change because large...
- The behind the scenes bumbling of the hockey stick Tue, 17 Jan 12, 2:54amMann oh Mann. Tom Nelson continues to wade through the 5000+ Climategate 2 emails. I’ve selected a few he’s highlighted in the vein of behind the scenes discussion of Dr. Michael Mann’s infamous “hockey...