Tag Archives: ex post

CG2 and Ex Post Picking

Jul 31, 2019 – 6:20 PM

Jul 31, 2019: Noticed this as an unpublished draft from 2014. Not sure why I didn’t publish at the time. Neukom, lead author of PAGES (2019) was coauthor of Gergis’ papers. One of the longest-standing Climate Audit controversies has been about the bias introduced into reconstructions that use ex post screening/correlation.   In today’s post, […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , | Comments (108)

Tingley and Huybers Exclude Mt Logan

Apr 14, 2013 – 1:41 PM

Perhaps the greatest single difference between being a “real climate scientist” and policies recommended here is that “real climate scientists” do not hesitate in excluding data ex post because it goes the “wrong” way, a practice that is unequivocally condemned at Climate Audit and other critical blogs which take the position that criteria have to […]

By Stephen McIntyre | Posted in Multiproxy Studies, Uncategorized | Also tagged , , , , | Comments (124)

Karoly and Gergis vs Journal of Climate

Oct 30, 2012 – 11:02 AM

On June 10, a few days after the Gergis-Karoly-Neukom error had been identified, I speculated that they would try to re-submit the same results, glossing over the fact that they had changed the methodology from that described in the accepted article. My cynical prediction was that a community unoffended by Gleick or upside-down Mann would […]

By Stephen McIntyre | Posted in FOIA, Uncategorized | Also tagged , , , , | Comments (128)

Myles Allen Calls For “Name and Shame”

May 31, 2012 – 9:10 PM

Myles Allen, a declared supporter of open data archives, has, in blog comments here, proposed “name and shame” as a first tactic against data obstructionists (as opposed to FOI). Journal editors can and should enforce a simple “disclose or retract” policy if a result is challenged, and almost all of them do: if any don’t, […]

By Stephen McIntyre | Posted in Uncategorized | Also tagged , , , , , , , , | Comments (365)

Voodoo Correlations and Correlation Picking

Jan 16, 2009 – 9:42 AM

Ex post selection based on correlation has been a long-standing issue at this blog (and has been independently discussed at other blogs from time to time – Luboš, Jeff Id and David Stockwell have all written on it independently. The issue came back into focus with Mann 2008, in which there is industrial strength correlation […]

By Stephen McIntyre | Posted in General | Comments (40)