Author Archives: Stephen McIntyre

Truth Machines

Here is a sociological study of how GCM modelers relate to their models. [Lahsen, 2005. Seductive Simulations? Uncertainty Distribution Around Climate Models, Social Studies of Science, 35, 895-922.] I kid you not. Lahsen: “At least at the time of my fieldwork, close users and potential close users at NCAR (mostly synoptically trained meteorologists who would […]

Hansen Simplified

I think that I can give a very simple explanation of just how bizarre the climate reconstruction by Jim Hansen is. The graph below shows the actual Mg/Ca values for ODP806B, which is used in his reconstruction. The orange point is a modern sample in 27.2 deg C water (a value of 4.5, higher than […]

The Resident Expert

Don’t mess this.

Mears and Wentz: Polar Amplification Calamity

New Mears and Wentz data plotted up here shows the full impact of the looming polar amplification calamity in Antarctica. Data was downloaded from their FTP site here .

Christy on Source Code

John Christy writes in reply to my email, occasioned by Connolley’s remark that Wentz and Mears had been forced to reverse engineer his code: Steve: We gave RSS the part of the code that was still a source of confusion (a correction for diurnal drift for the LT product). In addition, we provided intermediate adjustment […]

Massachusetts v EPA at the Supreme Court

Jim Erlandson writes in with the following reference. If you follow through to the link at Northwesterm, you will see the cases and the judgements. Interesting issues abound. Take a look at the Amicus Brief by various scientists, including the omnipresent J.M. Wallace of our NAS Panel. From today’s Wall Street Journal Law Blog: Greenhouse […]

Hansen and Bracket Fatigue

Lots of interesting things to find when you turn over the rocks of Hansen et al 2006. These are comments on work in progress, but, to say the least, there appear to be some curious decisions and methodologies.

Willis on Santer et al 2006

The new Santer et al. paper, Forced and unforced ocean temperature changes in Atlantic and Pacific tropical cyclogenesis regions, purports to show that sea surface temperature (SST) changes in the Pacific Cyclogenesis Region (PCR) and the Atlantic Cyclogenesis Region are caused by anthopogenic global warming (AGW). They claim to do this by showing that models […]

The Hansen Splice

Mg/Ca proxies measure the temperature of calcification of G. ruber, which is not necessarily the same as surface temperature. Dahl et al state G. ruber is present year–round at Site 723B, but experiences blooms during both monsoon seasons and calcifies above 80 m water depth (14–16)…. In accordance with the seasonality of G. ruber in […]

Climate Models – the Next Generation

Weaver says the next generation of his climate model will address the influence of climate on human evolution. I guess we can expect headlines saying that scientists University of Victoria have shown that global warming, if left unchecked, will lead to the development of a third eye by the year 2075.