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New climate data term: “bodge”

I learn something new every day. “Bodge” – here’s the definition from Wikitionary:

Etymology 1

The term “bodge” derives from Middle English boccen, which means “to mend.”

Verb

bodge (third-person singular simple present bodges, present participle bodging, simple past and past participle bodged)

  1. (UK) To do a clumsy or inelegant job, usually as a temporary repair.
    • All the actions of his life are like so many things bodged in without any natural cadence or connexion at all. (A book of characters, selected from the writings of Overbury, Earle, and Butler, Thomas Overbury and John Earle, 1865)
    • Some cars were neglected, others bodged to keep them running with inevitable consequences (Original Porsche 356: The Restorer’s Guide, Laurence Meredith, 2003)
    • Do not be satisfied with a bodged job, set yourself professional goals and standards (The Restauration Handbook, Enric Roselló, 2007)

Noun

bodge (plural bodges)

  1. (UK) A clumsy or inelegant job, usually a temporary repair.

Yeah, sounds about right. Here in the USA we have a website called “There I fixed it“, which could just as easily be named “There, I bodged it”.

Here’s what Steve McIntyre has to say about it:

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Muir Russell and the Briffa Bodge

By Steve McIntyre

There has been some recent discussion of the Briffa bodge – an early technique to hide the decline. I had drafted a post on the topic and its handling by the Muir Russell “inquiry” in early July 2010, but did not publish the post at the time. In today’s post, I’ve slightly updated my July 2010 draft.

The term “bodge” was used for the first time in a comment (not a post) on November 8, 2009 by me here less than two weeks before Climategate). I had noticed the term “Briffa bodge” in a preprint of Briffa and Melvin 2008 2011 (see here), where it was used to describe a “very artificial correction” to Briffa’s widely used Tornetrask chronology as follows:

Briffa et al. (1992) ‘corrected’ this apparent anomaly by fitting a line through the residuals of actual minus estimated ring widths, derived from a regression using the density data over the period 501–1750 as the predictor variable, and then removing the recent apparent decline in the density chronology by adding the fitted straight line values (with the sign reversed) to the chronology data for 1750–1980. This ‘correction’ has been termed the ‘Briffa bodge’ (Stahle, personal communication)!

Bodging of the Tornetrask chronology had been discussed in much earlier CA posts – e.g. in March 2005 here and again here.

The term “bodge” also occurs in Climategate correspondence, as pointed out by Jeff Id on December 1, 2009 here.

In July 1999, Vaganov et al (Nature 1999) had attempted to explain the divergence problem in terms of later snowfall (an explanation that would seem to require caution in respect to the interpretation of earlier periods.) On July 14, 1999, Ed Cook wrote Briffa as follows:

Hi Keith,
What is your take on the Vagonov et al. paper concerning the influence of snowfall and melt timing on tree growth in Siberia? Frankly, I can’t believe it was published as is. It is amazinglly thin on details. Isn’t Sob the same site as your Polar Urals site? If so, why is the Sob response window so radically shorter then the ones you identified in your Nature paper for both density and ring width? I notice that they used Berezovo instead of Salekhard, which is much closer according to the map. Is that
because daily data were only available for the Berezovo? Also, there is no evidence for a decline or loss of temperature response in your data in the post-1950s (I assume that you didn’t apply a bodge here). This fully contradicts their claims, although I do admit that such an effect might be happening in some places.

Cheers,
Ed

See here for the response.

I raised the Briffa bodge as an issue in my submission the Briffa bodge to the Parliamentary Committee and Muir Russell as an example of “data manipulation”.

Although Muir Russell expressed disinterest in opining on the proxy issues that dominated the Climategate dossier, they reluctantly expressed an opinion on Briffa’s adjustment of the Tornetrask chronology, agreeing that the bodge was indeed “ad hoc”, but found (without giving any evidence) that there was nothing “unusual about this type of procedure”. While I presume that this reassurance was intended to comfort his audience, I wonder whether readers should in fact be comforted by this observation.

read the full post here

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