In March 2010, Eugene Wahl admitted to the NOAA Inspector-General that he had destroyed his email correspondence with Keith Briffa about changes to IPCC and falsely stated that “all” the emails were in the public domain. This was untrue. The attachments were not in the public domain. Not only were the attachments not in the […]
In yesterday’s post, I discussed the inconsistency between the climate community’s desire to rebuild trust and CRU/East Anglia’s continuing refusal of FOI requests, most recently for the 2006 version of the Yamal regional chronology. The moral of that post was that providing such information – even if they didn’t “have” to – was the sort […]
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 […]
Recently I noticed that there was an (otherwise digitally unavailable) version of the Briffa reconstruction in a second (undocumented) sheet attached to the Jones et al 1998 archive at NCDC (see here). Using this version, I was able to replicate graphics that had hitherto been impenetrable. Although the spreadsheet itself is undocumented, it is possible […]
The day before yesterday, I reported that Briffa and Osborn (Science 1999) had not just deleted the post=1960 decline (see also CA here), but had deleted the pre-1550 portion as well – the deletions contributing to an unwarranted rhetorical impression of consistency between the reconstructions, an impression that was capitalized upon in the commentary in […]
“Hide the decline” refers to the decline in the Briffa MXD temperature reconstruction in the last half of the 20th century, a decline that called into question the validity of the tree ring reconstructions. (I’m going to analyze the letters on another occasion.) In the IPCC Third and Fourth Assessment Reports, IPCC “hid the decline” […]
As noted at CA last week, Briffa published a partial response to Yamal issues at the CRU website, one post discussing the impact of the Yamal chronology in various studies and another post discussing the Yamal chronology itself. For a response to Briffa’s online article on the impact of Yamal, I refer readers to last […]
In spite of suffering a serious illness (which I understand to be a kidney problem), Keith Briffa has taken the time to comment on the Yamal situation. The comment should be read by interested readers. If Briffa or any of his associates wishes to post a thread here without any editorial control on my part, […]
Those who forget the past are condemned to repeat it. The SI for MBH (and Mann et al 2007) had incorrect geographic locations for numerous proxies. The same error is repeated in Mann et al 2008, a defect encountered by Jeff Id and myself in trying to replicate reported correlations to gridcell temperatures. Nearly 100 […]
I recently received a copy of how IPCC authors answered the review comments, including their answers to the requirement of one reviewer that the deleted Briffa data be restored (and an explanation given for the inconvenient bits.) You may recall the observation of one reader in the discussion of Swindle, the reader observing: If a […]
