Tag Archives: mcculloch

Invalid Calibration in Kaufman 2009

Sep 18, 2009 – 12:46 PM

Darrell S. Kaufman, David P. Schneider, Nicholas P. McKay, Caspar M. Ammann, Raymond S. Bradley, Keith R. Briffa, Gifford H. Miller, Bette L. Otto-Bliesner, Jonthan T. Overpeck, and Bo M. Vinther (Science 9/4/2009) propose a reconstruction of Arctic summer land temperatures for the last 2000 years, using 23 diverse proxies. Decadal averages of each proxy [...]

By Hu McCulloch | Posted in General, Kaufman 2009 | Also tagged | Comments (35)

Spline Smoothing

Aug 23, 2009 – 2:59 PM

The 2009 Climate Dynamics paper “Unprecedented low twentieth century winter sea ice extent in the Western Nordic Seas since A.D. 1200″ by M. Macias Fauria, A. Grinsted, et al. discussed already on the thread Svalbard’s Lost Decades pre-smooths its data with a 5-year cubic spline before running its regressions. There’s been a lot of discussion [...]

By Hu McCulloch | Posted in Other Multiproxy Studies, Sea Ice, Statistics | Also tagged , | Comments (187)
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