Grendel wrote on Jul 10
th, 2009 at 11:22am:
Quote:So go on then, Prof. What makes you sure that you’re right and all those scientists out there saying the opposite are wrong? ‘I’m a geologist. We geologists have always recognised that climate changes over time. Where we differ from a lot of people pushing AGW is in our understanding of scale. They’re only interested in the last 150 years. Our time frame is 4,567 million years. So what they’re doing is the equivalent of trying to extrapolate the plot of Casablanca from one tiny bit of the love scene. And you can’t. It doesn’t work.’
Irrelevant. The crux of this issue is the effects on the human population. We all know that mass extinctions have occurred over geological time. We're talking about the most rapid temperature change and the most rapid CO2 increase since all the time that human beings have existed on this planet.
Quote:What Heaven And Earth sets out to do is ........ It points out, for example, that polar ice has been present on earth for less than 20 per cent of geological time; that extinctions of life are normal; that climate changes are cyclical and random; that the CO2 in the atmosphere — to which human activity contributes the tiniest fraction — is only 0.001 per cent of the total CO2 held in the oceans, surface rocks, air, soils and life; that CO2 is not a pollutant but a plant food; that the earth’s warmer periods — such as when the Romans grew grapes and citrus trees as far north as Hadrian’s Wall — were times of wealth and plenty.
All this is scientific fact — which is more than you can say for any of the computer models turning out doomsday scenarios about inexorably rising temperatures, sinking islands and collapsing ice shelves. Plimer doesn’t trust them because they seem to have little if any basis in observed reality.
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If I could post outside a proxy server I'd provide a more detailed rebuttal.
The Roman period was not warmer than today on a global basis.
This video addresses the issue better than I can. This is for the benefit of all those other than the 'faithful denialists'
http://www.youtube.com/watch?v=vrKfz8NjEzUI don't know how anybody other than the faithful can accept anything that Plimer writes given that we're up to 30 pages of errors in "Heaven and Earth" and counting.
Check the link in the other thread. Some of the 'errors' (hmmmm - what do you call an error if it's deliberate again?) are so fundamental that it doesn't take a scientist to verify that they are wrong.
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