Tag Archives: ex post

Tingley and Huybers Exclude Mt Logan

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 […]

Karoly and Gergis vs Journal of Climate

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 […]

Myles Allen Calls For “Name and Shame”

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, […]

Voodoo Correlations and Correlation Picking

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 […]


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