If you look at Chapter 6 of NAS, you’ll see heavy reliance on Thompson’s tropical ice cores. There’s much to consider here and this is a very first look. Here’s an interesting statement: "A quantitative assessment of temperature change from north Tibetan cores [Dunde and Guliya], using typical [whatver that is in tropical ice cores] […]
The continued negligence of the major journals in ensuring that paleoclimate authors archive data in accordance with journal policies is very frustrating and, as previously noted, has reared its ugly head once again with Osborn and Briffa. I have had little luck in the past with Science (except for the Kilimanjaro sample dO18 data) but […]
I’ve been re-visiting the various multiproxy studies with respect to scale and variability. In addition, as you know, one of my interests in these multiproxy studies is the non-robustness of MWP-modern levels to a very few non-independent proxies, used in multiple studies – in particular: bristlecones, Polar Urals and Thompson’s Himalayan dO18 series – each […]
The Quelccaya glacier is at a similar latitude to Kilimanjaro and is also receding. It’s a logical point of comparison. Core 1 is 163.6 m deep (Summit Core- 154.8 m) and is attributed a start date of 470 AD (Summit Core: 744 AD). Annual dust layers are a guide to dating in the upper portions. […]
Barker et al. [Science 2001] studied two glacier-fed tarns (micro-lakes) high on Mount Kenya -, Small Hall Tarn (SHT) at 4289 m and Simba Tarn (ST) at 4595 m.
The last thing that I should be doing is working on new proxies without finishing off work in hand, but this new data is interesting and, with it in hand, Thompson et al [2002] is even more frustrating. There are some weird splices that you don’t notice at a first read, but start to stick […]
A climateaudit first:- here is the first sample-by-sample àŽⳏ18 for an entire Thompson drill core – in this case KNIF2 and KNIF3 from Kilimanjaro. I had hoped that the data would be properly archived, but it was sent to me by Science and is webbed up here pending a more official archive, which will presumably […]
Thompson’s Dunde ice core is an extremely important proxy in multiproxy studies. There has been an increase in dO18 levels in the 20th century. Whether this is a proxy for temperature is not at all obvious on physical grounds. The relationship between dO18 and temperature in monsoon ice caps is opposite to that of polar […]
Science has recently weighed in with an editorial in which the editor of Science, Donald Kennedy, stated that he is “outraged” by the Barton Committee inquiring into processes for due diligence and disclosure in connection with science being applied for large-scale public policy. I thought that people might be interested in an account of my […]
I was collating information on Thompson’s archiving of ice core information and noticed something interesting on the Puruogangri glacier in the Himalayas drilled in 2000 and still unarchived. (Thompson is one of the 20 wise men who recently weighed in with the Barton Committee on behalf of MBH.) In addition to not being archived, I […]
Science Editorial
Science has recently weighed in with an editorial in which the editor of Science, Donald Kennedy, stated that he is “outraged” by the Barton Committee inquiring into processes for due diligence and disclosure in connection with science being applied for large-scale public policy. I thought that people might be interested in an account of my […]