Interesting presentation by Bill Gray posted up here . I’ve just scanned through it but I’m sure that it will cause much controversy. Please also consider the critique of Bill Gray at realclimate here . The only areas that I have personally examined data and methods are for proxy data, where obviously I feel that […]
UKweatherworld has a thread where people don’t comment but simply contribute references on the Holocene Optimum. I’m going to start doing things like this as a way of keeping track of things. People have contributed data but it’s impossible to keep track of. This thread is going to consist only of scripts and data relevant […]
Here’s a survey article by the International Detection and Attribution Group url. I’ll post a few threads like this, but don’t plan to comment myself. If someone wants to contribute a brief summary, it would be appreciated.
Another interesting post from Willis: James Hansen of NASA has a strong defense of model reliability here In this paper, he argues that the model predictions which have been made were in fact skillful (although he doesn’t use that word.) In support of this, he shows the following figure: (Original caption)Fig. 1: Climate model calculations […]
Willis Eschenbach sent in the following information about the Coupled Model Intercomparison Project (CMIP) project. I’ve not checked the analysis myself, but it is an interesting topic and well worth a separate thread. There are some other pretty good posts like this. If people want to suggest some back posts for individual threads, it just […]
Ou (J Clim 2001), " Possible Bounds on the Earth’s Surface Temperature" is an attempt to explain why a climate “not unlike the present-day one has prevailed on the earth since its early history when the sun was considerably dimmer”, a question that Lee was musing about and, IMHO, an interesting question. The tricky thing […]
Gerry Browning of CIRA has contributed a post today discussing climate models. If you go to Google Scholar and search “Browning Kreiss”, you will get a list of formidable papers on numerical questions. Gerry has tried to distill the issues for a wider audience here. Recent awards include the NOAA Environmental Research Laboratories’ Outstanding Scientific […]
continuation of the thread here.
From our friends at climateprediction.net, climate disaster has struck I regret to announce that we’ve recently discovered a major error in one of the files used by the climate model. The file in question specifies levels of man-made sulphate emissions but due to a problem with the file specification, models have been inputting greatly reduced […]
Someone has asked about the error bars in Levitus and whether the backtest of Hansen and Schmidt against those error bars would be as decisive. Here is the result taken straight from the Levitus analysis: You can use sophisticated statistical analysis to compare this, but my trusty Magic 8-Ball says: “Nowhere near”
Climate Audit 