The Great Global Warming Swindle

[HT:JK]
CO2 is a very small gas in the atmosphere. It is vital of course – without it we wouldn’t be here. But it’s small. It’s not at all the most important greenhouse gas, and greenhouse gases themselves, and the ‘greenhouse effect’, form only one small part of the earth’s climate system (and not a very well understood part either). There is no correlation between CO2 and temperature on any significant timescale, except where you find, in ice core data, CO2 levels being influenced by temperature levels (there’s a time lag between the two phenomena). Even global warmers admit that, for CO2 to make any difference, there would need to be some mechanism to amplify its effect in the atmosphere. No such amplifier has been shown to exist. They haven’t even been able to demonstrate how one might work in theory (the trouble is the only conceivable amplifier would be water vapour, and water vapour makes clouds, which are rather famous for their cooling effect – at least the low level ones).

So what are we left with? Temperature has risen, slightly, falteringly and gradually for about 150 years or so (even ‘warmer’ scientists can’t claim that this started because of us). The period before this rise has long been known as a ‘Little Ice Age’, from which we are evidently making a welcome recovery. We only started pumping out CO2 properly in the postwar boom, but what did temperatures do? In the postwar period they fell, till about the mid-70s. Then they went up again (just like they did at the beginning of the 20th Century, and then for the past ten years they’ve more or less flat-lined, decreasing slightly.

Where is the evidence that humans are changing the climate? This is nothing but prejudice. It is not serious science.

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