“Bring the proxies up to date” was the title of one of my earliest posts. Michael Mann had explained that doing so required the use of heavy equipment (like tree ring borers) and travel to out-of-the way sites such as Bishop, California or even Niwot Ridge, a full 45 minute drive from UCAR world headquarters […]
I know this is well after the event, but Dr Wegman’s extensive and detailed responses to Rep Stupak‘s written questions are interesting reading. I’m not aware that Steve linked to this document before. Beware though: the file is 10MB in size, so I’d recommend a right click followed by “Save Target as” – otherwise your […]
I’ve been going through the literature and data on ocean sediments looking for proxies with high resolution in the Holocene – something that I discussed a few months ago. Kim et al 2004 and Lorenz et al 2006, two articles by the same group, discuss Holocene SST changes based on alkenones. Most of their proxies […]
Jerry Browning writes the following about the balance between vertical velocity and total heating: Browning and Kreiss (2002) have shown that as one moves from the large-scale features in the midlatitudes to the smaller scale features, a balance between the vertical velocity and the total heating must be maintained for the solution to evolve slowly […]
Obviously my main scientific interest in the SPM is their handling of proxies. Here there was one rather big surprise and it wasn’t what you might think. (I’m not saying that this is necessarily a very important section of the report; it just happens to be an area that I know well, am interested in […]
We’ve all become rather used to graphs looking like the one that I’ve drawn below (other than the horizontal blue line that I will explain later). This, together with the corresponding graph of CO2 levels, is almost certainly same as Gore’s graphic on page 66 of Inconvenient Truth. I’ll bet dollars-to-doughnuts that some variation of […]
A reader writes in: I think Steve and the other CA readers will be interested in the new article by Matthew Salzer and Malcolm Hughes (of MBH fame) entitled “Bristlecone pine tree rings and volcanic eruptions over the last 5000 yr” in the latest issue of Quaternary Research, “> available for free. I don’t have […]
A new thread at bender’s suggestion. Treelines are a climate indicator that I’ve paid attention to in the past as evidence that made sense to me about the relationship of modern and medieval climate. I’ve posted up threads in the past about tree lines in California being higher than at present in the MWP and […]
Here’s a post which I wrote last June but didn’t post up at the time because the NAS Panel report came out and I had other pressing matters to comment on. My post as then drafted started: Last week, through Chefen, Jean S and myself, here here here and here , we showed that MBH98 […]
There seems to be lots of interest in solar issues and lots of controversy among specialists. For now, let’s simply look at the millennial proxies for solar activity. For now, I don’t want to discuss issues like cosmic ray modulation or that sort of stuff on this thread – all in good time. Put it […]
Climate Audit 