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
Julien Emile-Geay from Judith Curry’s university – who, together with Kim Cobb, is teaching a course on the Hockey Stick – has joined our debate with a forceful criticism of Craig Loehle’s recent paper. While Emile-Geay seems to be a lively young man with some very cordial comments about CA here and his comments are […]
Julien Emile-Geay has made many forceful criticisms of the Loehle reconstruction. For example, he says: Relationship of each proxy to *local* temperature is not even discussed. We are just shoved a list of references (hey Craig , have you heard of tables ? They are a great means that scientists use to convey information clearly). […]
bender writes: Maybe Steve M wants to set up a thread on the paper? JEG provided this url: Click to access 2007-LNA-TeA.pdf moshpit, when I can’t compute exact solutions, I simulate it. As for autocorrelation, given the sparseness of the data points in the time domain, maybe the autocorrelation is very weak? If autocorrelation is […]
Here is a script for collating Loehle proxies into an R-list in which each item is a table with two columns – one the AD year and the other the temperature (except for Holmgren where it is a native value as temperatures were not estimated in the underlying article.) This has not been coordinated with […]
Continuation of Exponential Growth # 2.
Thread for discussion of Loehle 2007. I’ll try to comment later but have some other obligations right now. Craig Loehle sneds the following information on provenance: 1) GRIP borehole temperature (Dahl-Jensen et al., 1998): See Moberg Nature site supplementary material [SM – digitized version is at http://data.climateaudit.org/data/moberg/djgrip.dat ) 2) Conroy Lake pollen (Gajewski, 1988): ftp://ftp.ncdc.noaa.gov/pub/data/paleo/pollen/recons/liadata.txt […]
Here is an interesting exchange at the House Energy and Commerce Subcommittee hearings about the provenance of the hockey stick diagram in An Inconvenient Truth. Thanks to the reader who spotted this. Rep Stearns took aim at the apparent use of Mann’s Hockey Stick in Inconvenient Truth (the methodology of which had been severely criticized […]
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