Jean S writes (transferred from a comment with the addition of a few headings): A question for the experts: is it known who wrote and who were used as experts in the EPA documents? If not, is that information considered public (i.e., obtainable under FOIA or similar)? The reason I ask is that I get […]
In a recent post, Keith Kloor worried about what would happen when a “bad paper spotlighted on a popular climate blog” is not debunked. In fact, even when a “bad paper spotlighted on a popular climate blog” is debunked, that doesn’t prevent subsequent reliance in policy discussions, as we see in EPA citation of the […]
Tree rings are widely used for reconstructing climate and past climates are critical for putting the current climate (including global temperatures) into the proper perspective. Is current warming unusual? Only a comparison to the past can tell. To help gain a better understanding of the past and how global temperatures may have behaved, researchers frequently […]
In our examination of the new Mann proxies, there is a notable increase in the prevalence of speleothem proxies in the MWP network. Craig Loehle used a couple of speleothem proxies in his reconstruction. One was a grey-scale series from Holmgren’s Cold Air Cave, South Africa. Not to be outdone, Mann et al used two […]
One of Loehle’s proxies – the one that ends in the 16th century – has occasioned some interest and I took some time to investigate it. It is an alkenone SST estimate from ocean sediment core MD95-2011 from the Norwegian Sea (66 58.19N, 07 38.36E and 1048 m). The series ends in the 16th century […]
The position at ClimateAudit is that error bars in MBH98 are incorrectly calculated and “pseudo science” and that no one knows how the error bars in MBH99 were calculated (not just Me, Jean S, UC but also von Storch) and these error bars are also “pseudo science”. Notwithstanding this view, UC has posted up MBH98-style […]
Loehle’s introduction emphasized the absence of tree ring chronologies as being an important aspect of his network. I think that he’s placed too much emphasis on this issue as I’ll show below. I previously noted the substantial overlap between the Loehle network and the Moberg low-frequency network. I thought that it would be an interesting […]
In the construction of his network, Loehle has done something very simple and very sensible that amazingly has never been done in a complete network in any previous temperature reconstruction. Something that neither bender nor JEG noticed; in fact even Loehle himself didn’t notice. Try to guess before you look at the answer.
Craig Loehle has sent digital versions of the 18 proxies used in Loehle 2007 which are now in the directory http://data.climateaudit.org/data/loehle listed in the following order (slightly different than the order in the previous note, shown here with url information). I’ve been able to successfully crosscheck many of these series against original provenance. I’ve got […]
Continuation of Craig Loehle Reconstruction
Climate Audit 