John A has briefly come out of retirement and set up a CA bulletin board, see here for prototype – which I’m hoping will resolve some blog operating issues. The Bulletin Board presently has 4 main forums and provides for threads within a forum like other boards. I can see a couple of advantages to […]
The IPCC defines radiative forcing at the tropopause. However, nowhere do they provide a diagram showing energy balances above the tropopause and below the tropopause – something that seems like one of the first things to do. Instead, they show the Kiehl and Trenberth cartoon which treats the atmosphere as a whole without distinguishing balances […]
Last summer I attempted to do a survey of Reno’s USHCN official climate station. But I was thwarted by its placement at the Reno International Airport due to security and lack of accessible photographic vantage points. Reno’s USHCN station is particularly important due to it being part of the test cases of stations in the […]
David Holland has written in raising an excellent point about the failure of IPCC WG1 to release the Review Editor comments. In our examination of specific issues e.g. the Briffa truncation, the handling of trends, etc., the Author Responses (online through an earlier CA initiative) show that the IPCC authors often made unconvincing and tendentious […]
Readers have written in to say that it was not the job of the IPCC to provide a self-contained exposition of the scientific issues pertaining to increased CO2. I’ve looked at a couple of statements of the role of the IPCC and there’s certainly nothing that prohibits them from providing a coherent explanation. IPCC’s website […]
Yesterday I collated IPCC AR3 and AR4 “expositions” of the enhanced greenhouse effect, observing that, in my opinion, they were so baby food as to be essentially useless to a scientist from another discipline. Today I’m going to drill a little deeper in the expositions, going to a 1995 journal comment by Houghton and to […]
Judith Curry writes: I’ve posted the chapter on Thermodynamic Feedbacks in the Climate System from my text “Thermodynamics of Atmospheres and Oceans” on my website, the links can be found at Text: http://curry.eas.gatech.edu/climate/pdf/Ch13_GalleyC.pdf Figs: http://curry.eas.gatech.edu/climate/pdf/chapter13_figs.pdf For my more recent thoughts on the subject of climate feedbacks, I refer you to my previous post on the […]
A logarithmic relationship between CO2, radiative forcing and direct impact is reported by IPCC and widely relied on. While this may well be a plausible relationship (Lubo, for one, endorses it), it is not easy finding a proof of the relationship. In a recent post, I noted this in connection with IPCC AR1 (1990), where […]
One of the fundamental questions for someone interested in the impact of doubled CO2 is exactly how (1) the greenhouse effect works; and (2) how the “enhanced” greenhouse effect works. AR4 FAQ 3.1 poses the question: I’m going to show their answer to this question in full because the answer does not rise about a […]
Chapter 1 of AR4 has some surprisingly interesting comments about models that, to the extent that the points are disclosed in the body chapters, are disclosed so opaquely that they would be undecipherable to anyone other than a few. Here are some interesting comments about flux adjustment – an issue that must surely raise civilian […]
Climate Audit 