» “ROBUST FINDINGS” about global warming - Blogger News Network

[Peter Ridley] Has that method used for reconstructng past atmospheric compositions using air recovered from ice cores, which Professor Richard Alley refers to as the “Gold Standard”, been subjected to a proper assay showing that it is not in fact fools gold?

Why do I ask this? It is because I have not yet been able to find any worthwhile research providing convincing evidence that air “trapped” for hundreds and hundreds of years within ice retains unchanged the composition that existed at the time of initial capture. As I understand it that air is first “trapped” in snow as it forms and falls and is then retained within the increasingly densified ice as it is compresses beneath more falling snow.

As Jaworowski et al. have pointed out, most recently in 2007 at the time that the non-scientific AR4 SPM was issued – ahead of the finalised report upon which it was supposed to be based was written - there are numerous physical and chemical processes that distort the original composition.