The Stokes-Kaufman contamination protocol – a 'sticky' wicket

Over at Climate Audit, Steve McIntyre has found yet another unexplainable inclusion of a hockey stick shaped proxy in the PAGES2K paper. What is most interesting about it is that when you look at the proxy plot panel, it reminds you of the panel that Steve plotted for Yamal, where just one proxy sample went…

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Marcott – 3 spikes and you are out

Guest post by Nancy Green Tamino claims he has added 3 spikes to the Marcott et al proxy data and the Marcott et al process detects them. Source: http://tamino.files.wordpress.com/2013/04/many_vs_unpert.jpg This, he then proposes, is proof that there are no 20th century spikes in the Holocene.  This claim appears to run counter to a prediction I…

The Neo Paleo Twitter war of Mann -vs- D'Arrigo

It seems that Columbia’s Rosanne D’Arrigo thinks Mann’s tree ring study isn’t representative proxies for volcanic eruptions, nor good for dendrochronology, though Mike Mann seems to think so. This Twitter interchange via Alexandra Witze from the AGU Chapman Conference on Volcanism and the Atmosphere in Selfoss, Iceland 10–15 June 2012 tells the story: And Witze…

American Meteorological Society disappears withdraws Gergis et al paper on proxy temperature reconstruction after post peer review finds fatal flaws

UPDATE: It appears the paper has been withdrawn and credit acknowledgement given to Steve McIntyre, see below: There was yet another recent “hockey stick” being foisted on the public. Gergis et al. It says: The average reconstructed temperature anomaly in Australasia during A.D. 1238–1267, the warmest 30-year pre-instrumental period, is 0.09°C (±0.19°C) below 1961–1990 levels.…