Nothing from Rasmus for over a day; it’s all Gavin now. Soon it will be “sigh….” and they’ll put the figure skaters back on the ice. We want hockey, not sequins. We want Rasmus, we want Rasmus, we want Rasmus… Is Rasmus in lock-up? Should we start a petition for Gavin to free Rasmus? Free […]
Kaufmann and Stern contained a reference to the provocatively titled Govindan et al. [2002], Global Climate Models Violate Scaling of the Observed Atmospheric Variability, Phys. Rev. Lett. 89, available here . I’ll comment at some time on the scaling issues, but it contained the following concise description of GCMs which I liked: The models [coupled […]
I have much unfinished business with multiproxy studies, but am getting dragged into discussing GCMs, where I wish to make clear that I am not familiar with the literature and am merely commenting on individual articles as I read them in the context of current discussion. If I miss some nuance, I apologize and will […]
Some of you accuse me from time to time of being sarcastic. It being the Christmas season, I will refrain the temptation to be sarcastic and present instead some sayings from Rasmus (Benestad), courtesy of our friends at realclimate, all conveniently taken from only one thread. There is much food for thought here. There is […]
I mentioned in connection with GCMs and Ice Ages, that the CO2 cycle was presently regarded by the leading paleoclimatologists as mysterious. This was contested by Lars Kamel, who observed that cold water dissolved more CO2 and did not see why there was a problem. Here I’m merely reporting what I’ve read and do not […]
Benestad at realclimate here, against Cohn and Lins, argues that their use of time series methods more advanced than Benestad’s IID, somehow offended against the laws of physics, "pitching statistics against physics" – plus other gems. It has to be read to be believed. Now white noise (equivalent to Benestad’s IID, independent identically distributed residuals) […]
I’ve tried to stay away from discussing GCMs where my knowledge is limited, but everyone seems to want to discuss them, so, against my better judgement, I’m posting up some thoughts. asked some people at AGU about whether GCMs could model getting into and getting out of ice ages. In some treatments, the presence or […]
Cohn and Lins [GRL 2005] , engagingly titled “Nature’s Style: Naturally Trendy”, questions whether recent trends in temperature can be classified as statistically significant, if considered from a more general perspective, including stochastic processes other than white noise. Some of the issues will be familiar to readers of this blog, although the treatment in Cohn […]
When I was thinking about spurious regression and ARMA(1,1) here , I mentioned a paper by Ai Deng [2005], which I found interesting. Deng has noted up this mention at his website as follows Click here to visit a web blog hosted by Steve McIntyre that contains some interesting discussions about Ferson et al. (2003) […]
Regular correspondent David Stockwell has set up a new blog and has posted an interesting comment on Briffa, about which he says: Have become interested in checking out dendroclimatology from the ENM point of view – particularly evaluating the model used for functional responses of alpine trees to temperature. All studies in Briffa et al. […]
Climate Audit 
A Shout Out to David Stockwell
Regular correspondent David Stockwell has set up a new blog and has posted an interesting comment on Briffa, about which he says: Have become interested in checking out dendroclimatology from the ENM point of view – particularly evaluating the model used for functional responses of alpine trees to temperature. All studies in Briffa et al. […]