Global warming models “fundamentally wrong” according to articles in Nature Geoscience online 13 July 2009 and Science Daily 15 July 2009.
Scientists studying core samples from seafloor have been studying a change in the chemical composition of the sediments associated with Palaeocene-Eocene Thermal maximum (PETM), a rapid increase in global temperature believed to have occurred 55 million years ago. The rise in temperature was associated with a rise in carbon dioxide and is therefore “probably the best ancient climate analogue for present-day Earth.”
However, a group of researchers from three American universities have analysed data from PETM associated sediments and concluded that current climate models based on rising carbon dioxide do not explain the sediments. In fact, the carbon dioxide changes could only explain about half the PETM warming. One of the researchers, Gerald Dickens, an oceanographer and professor of Earth Science at Rice University, explained: “In a nutshell, theoretical models cannot explain what we observe in the geological record.” He went on to say: “There appears to be something fundamentally wrong with the way temperature and carbon are linked in climate models.”
The researchers concluded that something other than carbon dioxide caused the warming 55 million years ago. Dickens commented: “Some feedback loop or other processes that aren’t accounted for in these models – the same ones used by the IPCC for current best estimates of 21st Century warming – caused a substantial portion of the warming that occurred during the PETM.”
Editorial Comment: This study is a good reminder that computer models are only as good as the information that is fed into them. If that information is wrong, or lacking in any way, the model will be wrong. Therefore, if there is a disagreement between models and data from the real world, it is the model that has to be modified or scrapped. The global warming proponents need to be challenged on this before they start using their model as an excuse for taking real money from ordinary people who are experiencing the reality of a non-warming world.
Evidence News, 19 November 2009
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