Thursday, December 17, 2009

Fallacies from the Copenhagen Opening Session


"here is what Pachauri invited the audience in Copenhagen to believe.
1. Pachauri asked us to believe that the IPCC’s documents were “peer-reviewed”. Then he revealed the truth by saying that it was the authors of the IPCC’s climate assessments who decided whether the reviewers’ comments were acceptable. That – whatever else it is – is not peer review.
2. Pachauri said that greenhouse gases had increased by 70% between 1970 and 2004. This figure was simply nonsense. I have seen this technique used time and again by climate liars. They insert an outrageous statement early in their presentations, see whether anyone reacts and, if no one reacts, they know they will get away with the rest of the lies. I did my best not to react. I wanted to hear, and write down, the rest of the lies.
3. Next came the bogus graph, which is featured three times, large and in full color, in the IPCC’s 2007 climate assessment report. The graph is bogus not only because it relies on the made-up data from the Climate Research Unit at the University of East Anglia but also because it is overlain by four separate trend-lines, each with a start-date carefully selected to give the entirely false impression that the rate of warming over the past 150 years has itself been accelerating, especially between 1975 and 1998. The truth, however – neatly obscured by an ingenious rescaling of the graph and the superimposition of the four bogus trend lines on it – is that from 1860-1880 and again from 1910-1940 the warming rate was exactly the same as the warming rate from 1975-1998.

click to enlarge
4. Pachauri said that there had been an “acceleration” in sea-level rise from 1993. He did not say, however, that in 1993 the method of measuring sea-level rise had switched from tide-gages to satellite altimetry against a reference geoid. The apparent increase in the rate of sea-level rise is purely an artefact of this change in the method of measurement.
5. Pachauri said that Arctic temperatures would rise twice as fast as global temperatures over the next 100 years. However, he failed to point out that the Arctic was actually 1-2 Celsius degrees warmer than the present in the 1930s and early 1940s. It has become substantially cooler than it was then.
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