I’ve discussed “mixed effects” methods from time to time in paleoclimate contexts, observing that this statistical method known off the Island can provide a context for some paleoclimate recipes, e.g. in making tree ring chronologies. This would make a pretty good article. Another interesting example of this technique, which would also make a pretty good […]
GISS gridded data is online but in a format that is unintelligible to people who are working with modern computer languages, as opposed to Fortran and who do not know whether their machines are “littleendian” or “bigendian” (see here for GISS discussion) – phrases rather reminiscent of Gulliver’s Travels, perhaps an apt text for Hansen. […]
More obstruction from the Met Office, in which they have changed their obstruction strategy. Previously they said that Mitchell had destroyed all of this email correspondence. This prompted David Holland to ask for information on the date of the destruction and on records management policy at the Met Office. Rather than answer the unanswerable, the […]
I’m finally stating to come up for air after dealing with the fetid grubs and maggots of Hansen’s code. Needless to say, key steps are not mentioned in the underlying publications, Hansen et al 1999, 2001. I’m not going to discuss these issues today. Instead, I want to show 3 case studies where I’ve been […]
Here are some more notes and scripts in which I’ve made considerable progress on GISS Step 2. As noted on many occasions, the code is a demented mess – you’d never know that NASA actually has software policies (e.g. here or here . I guess that Hansen and associates regard themselves as being above the […]
On March 31, 2008, David Holland sent a letter to Keith Briffa asking about several IPCC issues. In correspondence released from the Hadley Center, Briffa indicated his intention of being unresponsive. On May 15, Briffa sent an unresponsive reply to Holland, following which Holland initiated a FOI request on May 27, 2008 leading to an […]
As noted in other posts, IPCC policies state: All written expert, and government review comments will be made available to reviewers on request during the review process and will be retained in an open archive in a location determined by the IPCC Secretariat on completion of the Report for a period of at least five […]
We’ve been following with interest David Holland’s efforts to obtain information on how IPCC review editors discharged their important duties under IPCC process, with the most recent progress report here. Here’s another update.
Here are some notes and functions on some work that I did last fall trying to benchmark the GISS Step 2 adjustment in a non-US site. My first efforts to follow the written prescription have been unsuccessful. I’m placing some tools and a benchmark case (Wellington NZ) online and perhaps people who are trying to […]
CA reader, Nicholas, an extremely able computer analyst, has helped me with a number of problems with downloading data in compressed formats into R. One of the most annoying and heretofore unsolved problems was how to get Z files into R without having to handle them manually – a problem that I revisited recently when […]
Climate Audit 