Session U12 of the AGU Fall meeting (Session organizers: Gerald North, Bette Otto-Bliesner, John M. Wallace, and Ian Kraucunas[ of NRC]) has the following session description Numerous studies concerning large-scale surface temperature reconstructions have been published over the last decade. The National Research Council recently completed a report summarizing the status of these efforts. The […]
Here is a link to a new article in Chronicle of Higher Education about the HS debate in congress. This link should work for the next 5 days. A sidebar is available at the following link. There will be an online discussion Wednesday Sept. 6 at noon eastern time with Gerald North about the hockey […]
In 2000, Lonnie Thompson drilled ice cores at Kilimanjaro which were published 2 years later. In 2003, they drilled ice cores at Bona Churchill in Alaska. They made a presentation at AGU with press release in 2004 about looking for (and not finding) White River Ash from an 803 AD eruption. But no publications so […]
Many of the problems in multiproxy studies have very strong parallels in econometrics. It’s really econometricians – who know all about autocorrelated series and data mining – rather than statisticians who really should be involved in climate statistics. Here are some quotes from Clinton Greene, from an article about data mining from an issue of […]
Here’s something amusing. Mann has written to the House Energy and Commerce Committee, arguing that we made a fundamental and obvious mistake in how we calculated AR1 coefficients for the North American tree ring network, which exaggerated the HS-ness of the simulated hockey sticks – a mistake that Ritson has now supposedly picked up and […]
Posted for bender. bender writes: Attached are analyses of Willis’s landfalling hurricane data in post # 35. Interesting facts: 1. 1974-2005 trend is "n.s." (Note 95% confidence intervals now present.) 2. PACs for lag 10 and 20 are marginally significant. (Recall that for total # hurricanes lag 5 and 10 were sig. It is as […]
The Team have snarled back at Wegman here . They’ve posted up an August 16, 2006 letter from David Ritson to Waxman, accusing Wegman of not responding with a request for information that had been outstanding for almost 3 weeks (?!?) . Yes, you read it right. Jeez, I’ve been waiting almost three years for […]
Add this phrase from economics to your vocabularies to describe the "other" studies where proxies with known HS shapes like bristlecones and Yamal are used time after time. Here’s a website with some links. They cite Sullivan, Timmermann and White (1999) and White (2000) for the following definition: "Data-snooping occurs when a given set of […]
Here’s a pretty little graph that I think that you’re going to see more of. One is using the Wahl-Ammann variation of MBH methodology applied to MBH data; the others are from low-order red noise. Pink – no PC reconstruction from WA without strip-bark and Gaspé; black – from low-order red noise. I worked this […]
Here are posts from Francois and Dano on Tilman et al.
Climate Audit 
New Article in Chronicle of Higher Education
Here is a link to a new article in Chronicle of Higher Education about the HS debate in congress. This link should work for the next 5 days. A sidebar is available at the following link. There will be an online discussion Wednesday Sept. 6 at noon eastern time with Gerald North about the hockey […]