A while ago, I made a couple of posts on CRU adjustments to 19th century SST estimates based on their speculations about the use of canvas and wooden buckets. (While I’ve posted some questions about land temperature records, there is a far more pressing need to wade through SST procedures. My earlier posts were here […]
One of the remarkable claims in the AR4 Summary for Policy-Makers was that they provided the first “ assessed likely range to be given for climate sensitivity”, which they reported as follows: the global average surface warming following a doubling of carbon dioxide concentrations … is likely to be in the range 2 to 4.5°C […]
Here’s are interesting minutes of the IPCC WG1 leading up to the approval of the SPM.
One of the two Coordinating Lead Authors of the IPCC Paleoclimate chapter (chapter 6), Eystein Jansen – the other is Jonathan Overpeck of “Get rid of the MWP” fame – was asked about the Mann Hockey Stick and M&M criticism by a Norwegian newspaper yesterday. I guess not every one is prepared to forget IPCC […]
Obviously my main scientific interest in the SPM is their handling of proxies. Here there was one rather big surprise and it wasn’t what you might think. (I’m not saying that this is necessarily a very important section of the report; it just happens to be an area that I know well, am interested in […]
The Summary for Policymakers for the IPCC’s 4th Assessment Review has been released today. Here is the presentation. As discussed before, the actual WG1 Report was not released today. It will only be released in May 2007, the delay occurring to permit the IPCC to ensure that there is “consistency” between the Summary and the […]
What will I be looking for in the SPM4? There’s not much fun in trying to predict their temperature estimate when they’ve already leaked that it’s 2-4.5 deg C by 2100. So here are some things that I’m going to be looking for.
Andrew Weaver in an article here says of the SPM: “This isn’t a smoking gun; climate is a batallion of intergalactic smoking missiles.” Wow. Even better than Space Invaders. There was a big front page preview of the SPM in the Toronto Globe and Mail today here all of which is worth reading, but for […]
As noted in a prior post, only IPCC insiders have access to the WG1 Report between the Feb 2, 2007 release of the Summary for Policy-Makers and the scheduled publication of the WG1 Report in May 2007. To my knowledge, such a procedure is unprecedented in public commission reporting. In searching for an explanation of […]
I was mulling over the IPCC release schedule, which has a procedure that is, shall we say, unprecedented in my experience with public disclosure documents. The schedule has been available for some time, but, to my knowledge, no one has commented on its combination of absurdity and condescension. On February 2, 2007, they are releasing […]
Climate Audit 
IPCC Paleoclimate Lead Author on M&M
One of the two Coordinating Lead Authors of the IPCC Paleoclimate chapter (chapter 6), Eystein Jansen – the other is Jonathan Overpeck of “Get rid of the MWP” fame – was asked about the Mann Hockey Stick and M&M criticism by a Norwegian newspaper yesterday. I guess not every one is prepared to forget IPCC […]