Category Archives: IPCC

IPCC’s Secret Letter

On Feb 26, 2010, as part of their first response to Climategate, Thomas Stocker, a Climategate correspondent of Phil Jones and by then Co-Chair of AR5 WG1, sent a still secret letter to all AR4 Lead Authors, Coordinating Lead Authors and Review Editors under the letterhead of WG1, purporting, it seems, to represent the parent […]

Hide the Megadroughts

Pielke Jr asserts, using unvarnished words, that WG2 Co-Chair Christopher Field, an ecology professor at Stanford, “misled” Congress. Pielke stated: This is not a particularly nuanced or complex issue. What Field says the IPCC says is blantantly wrong, often 180 degrees wrong. It is one thing to disagree about scientific questions, but it is altogether […]

IPCC Rejects Anonymous Review

Although the IPCC calendar webpage doesn’t link to session documents of the 34th session (Kampala Nov 2011), David Holland has alertly located the documents – see here. IPCC rejected a proposal for anonymous peer review – see document here (page 12 on). We haven’t discussed this topic previously (in an IPCC context). On reflection, the […]

Watch the Pea – AR5 (ZOD) Chapter 10

As CA readers are aware, key findings of Santer et al 2008 do not hold using updated data. Ross and I submitted a comment to IJC showing this. The comment was rejected twice, with one of the reviewers (as in the case of the comment on Steig et al) being a Santer coauthor (who was […]

AR5 Loves Steig et al 2009

Jeff Id has an excellent post on IPCC AR5 use of the highly flawed Steig et al 2009. Despite Steig’s efforts to block the publication of O’Donnell et al 2010, O2010 shows clearly that whatever is new in Steig et al 2009 is not only incorrect, but an artifact of flawed math and whatever is […]

IPCC: “Fix It or Fold It”

(Steve: Here is Ross’ excellent op ed on the IPCC from National Post. Ross’ paper is here.)

IPCC Pads Review Editors

Ross McKitrick points out that IPCC AR4 Chapter 3 listed three Review Editors, one of whom was Bubu Jallow: On Oct 31, 2006, Kevin Trenberth (with Phil Jones, one of two Coordinating Lead Authors of chapter 3) wrote to IPCC protesting Jallow’s inclusion as a Lead Author because he did not attend any meetings, answer […]

AR4 on “1998 was the warmest year”

As most CA readers know, a few years ago, I wondered how they knew that 1998 was the warmest year in a millennium – a claim that you don’t see in AR4. Nor, at first (second or even fifth) glance does the assertion, once so prominent, even seem to be addressed in AR4. The Climategate […]

The Wisdom of Solomon

If IPCC authors think that it’s important to improve the measurement of some variable, should they say so in an IPCC report? You’d think that this would be exactly the sort of recommendation that policy makers would appreciate in an assessment report. For example, maybe IPCC scientists could have observed that there was in reality […]

Overpeck’s “Hammer”

One of the curious aspects of IPCC peer review procedure is that the ultimate authority for accepting or rejecting comments by peer reviewers rests with the IPCC authors, as opposed to the Review Editors. Review Editors are supposed to see that authors respond to Review Comments, but don’t follow up to see that it’s actually […]


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