Today I’m doing a first reconnaissance of Butterworth filters, used extensively in Mann et al 2008. The comments here are notes and thoughts and I hope that some issues can be clarified by readers. As of 12.30 pm today, I think that that the main problem that I’ve had pertains to a difference between R […]
In an online trailer for a new climate documentary, James Hansen, presumably exhausted from answering “niggling questions” at a gala Lehman Bros dinner tells the film-maker: I’m not going to use McIntyre’s name. The problem of name usage has been recently considered in several important philosophy workshops and conferences. On the top right, I linked […]
There’s an amusing little incident with the deleted “original” data set that was posted up for a few minutes at Mann’s website – you know, the data set that was first demonstrably referenced by a CA reader in the early morning of Sep 5. (I’ll reserve comment for now on issues relating to the timestamp […]
UC writes in that there’s another Mannian problem: And GRL08 ( http://www.meteo.psu.edu/~mann/shared/articles/MannGRL08.pdf ) is the prologue. Tried this new smoother ( http://www.meteo.psu.edu/~mann/smoothing08/lowpassadaptive.m ) with HadCRUT monthly and f=0.0104, [smoothedbest,w0,w1,w2,msebest] = lowpassadaptive(HadM, 0.0104); got this figure, But the weights are [w0 w1 w2] ans = 0.4100 0 0.5500 Surprisingly, this does not agree with the text, […]
RealClimate has a good discussion of problems with Loehle 2007: link, linking to JEG’s discussion but not to discussion here. Update: Lubo has a discussion here. In some cases, RC non-linking to climateaudit is mere pettiness, but, in this particular case, they cite information on Loehle that was initially made available at climateaudit. In this […]
The World Conference on Research Integrity convened in Portugal from 16 to Sept 19. They refer to two incidents – the misrepresentation of the examination of station history in China and the NASA Y2K problem: Addressing the urgent need for fighting fraud, forgery and plagiarism in science world-wide, the very first World Conference on Research […]
Hansen has followed up his “Lights Out Upstairs” outburst with another outburst dismissing critics as “court jesters” with whom he will have no truck. (Lights Out is now cited on the NASA website.) His new jeremiad re-iterated the position of NASA spokesman Gavin Schmidt that U.S. errors “didn’t matter” because the U.S. was only 2% […]
Hansen has published an online letter entitled A Light On Upstairs? The letter concludes by saying: My apologies if the quick response that I sent to Andy Revkin and several other journalists, including the suggestion that it was a tempest inside somebody’s teapot dome, and that perhaps a light was not on upstairs, was immoderate. […]
I observed recently that Hansen’s GISS series contains an apparent error in which Hansen switched the source of GISS raw from USHCN adjusted to USHCN raw for all values January 2000 and later. For Detroit Lakes MN, this introduced an error of 0.8 deg C. I’ve collated GISS raw minus USHCN adjusted for all USHCN […]
Climate Audit 