Global Warming Dissidents
A Yahoo news item titled Small group of US experts insist global warming not man-made appeared on Dec 16, 2007. The article spoke of a small group of American experts who, contrary to the views of most of their collegues, believe that humans may not be responsible for global warming. They would attribute the cause to natural phenomenon.
An organization known as the United Nations Intergovernmental Panel on Climate Change (IPCC) had implicated humans as responsible and declared the evidence "unequivocal." Al Gore was able to rely on this in making his own declaration that the debate was over.
The dissident US scientists wrote an article which was published in The International Journal of Climatology; a publication based in the UK. Lead author David Douglas stated his view that the warming patterns, involving surface and atmospheric temperature trends, do not support the greenhouse warming idea. Greenhouse gases constitute a negligible effect on climate warming according to Douglas. Co-author John Christi argued that warming effects of human sourced carbon dioxide are neutralized by clouds and water vapor. This is allegedly ignored by greenhouse models.
Climatologist Fred Singer, also one of the authors, argued the natural cycle alternative. The current trend would be simply one of many repetitive cycles. Singer cites data that is counter to what one would expect were the greenhouse model accurate. This includes temperature increases between 1900 and 1940 after which temperatures dropped from 1940 to 1975 despite increased combustion of oil and coal.
Singer offered other possible causal factors such as solar wind variation and variations in magnetic fields. The thinking is that these variations could impact cloud formation and thus the amount of sunlight reaching the surface of the earth.
An organization known as the United Nations Intergovernmental Panel on Climate Change (IPCC) had implicated humans as responsible and declared the evidence "unequivocal." Al Gore was able to rely on this in making his own declaration that the debate was over.
The dissident US scientists wrote an article which was published in The International Journal of Climatology; a publication based in the UK. Lead author David Douglas stated his view that the warming patterns, involving surface and atmospheric temperature trends, do not support the greenhouse warming idea. Greenhouse gases constitute a negligible effect on climate warming according to Douglas. Co-author John Christi argued that warming effects of human sourced carbon dioxide are neutralized by clouds and water vapor. This is allegedly ignored by greenhouse models.
Climatologist Fred Singer, also one of the authors, argued the natural cycle alternative. The current trend would be simply one of many repetitive cycles. Singer cites data that is counter to what one would expect were the greenhouse model accurate. This includes temperature increases between 1900 and 1940 after which temperatures dropped from 1940 to 1975 despite increased combustion of oil and coal.
Singer offered other possible causal factors such as solar wind variation and variations in magnetic fields. The thinking is that these variations could impact cloud formation and thus the amount of sunlight reaching the surface of the earth.
Labels: Global Warming
posted by Paul at 8:42 PM
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