Simon Carr of the Independent recently reported on a presentation by climate scientist Professor Richard Lindzen of MIT to the House of Commons. (My emphasis below.)
Over the last 150 years CO2 (or its equivalents) has doubled. This has been accompanied by a rise in temperature of seven or eight tenths of a degree centigrade.
The Intergovernmental Panel on Climate Change attributes half this increase to human activity.
Lindzen says: “Claims that the earth has been warming, that there is a Greenhouse Effect, and that man’s activity have contributed to warming are trivially true but essentially meaningless.”
He said our natural body temperature varies by eight tenths of a degree.
He showed a Boston newspaper weather graphic for a day – it had the actual temperature against a background of the highest and lowest recorded temperature for that day. The difference was as much as 60 degrees F.
When you double CO2 there’s a two per cent change in the “radiation budget”. Yet two billion years ago, the sun was 20 to 30 per cent dimmer – and the planet’s temperature was about the same.
The Al Gore graph showing CO2 and temperature rising and falling in tandem showed that the release of CO2 from the oceans was prompted by warming, not vice versa.
He gave us a slide with a series of familiar alarms – melting ice caps, disappearing icebergs, receding glaciers, rising sea levels. It was published by the US Weather Bureau in 1922.
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How to explain the procession of eminent opinion leaders – some even in our own Royal Society – who advance the tenets of catastrophic global warming? “It is science in the service of politics,” he said.
And the money spent on the advice of “scientists in the service of politics” can be measured in trillions.
Update: Here is Professor Lindzen's full presentation. An excerpt:
Our present approach of dealing with climate as completely specified by a single number, globally averaged surface temperature anomaly, that is forced by another single number, atmospheric CO2 levels, for example, clearly limits real understanding; so does the replacement of theory by model simulation. In point of fact, there has been progress along these lines and none of it demonstrates a prominent role for CO2.
Professor Lindzen concludes:
Perhaps we should stop accepting the term, ‘skeptic.’ Skepticism implies doubts about a plausible proposition. Current global warming alarm hardly represents a plausible proposition. Twenty years of repetition and escalation of claims does not make it more plausible. Quite the contrary, the failure to improve the case over 20 years makes the case even less plausible as does the evidence from climategate and other instances of overt cheating.
In the meantime, while I avoid making forecasts for tenths of a degree change in globally averaged temperature anomaly, I am quite willing to state that unprecedented climate catastrophes are not on the horizon though in several thousand years we may return to an ice age.
Global warming alarm. Hardly a plausible proposition.