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October 19, 2005
More on Global Warming (aka Weather)
Thanks to Jonah at the Corner for pointing this out.
A stalagmite from an Alpine cave may indicate that global warming is not as unusual as many think.
Deposits laid down in the stalagmite have enabled a European team to probe past climates confirming a Medieval Warm Period between AD 800 and 1300.
The warm spell is also indicated in some studies of tree-rings, ice-cores and coral reef growth records.
Writing in Earth and Planetary Science Letters the researchers suggest that global warming is a natural process.
Other scientists, however, say phenomena such as the Medieval Warm Period become less significant when broad sets of so-called "proxy data" are calibrated and synthesised to give a truly global picture - not just regional ones.
When this is done, they argue, the warming witnessed in the past few decades appears to be very unnatural....
Posted by Aaron at October 19, 2005 02:59 PM
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Comments
Aaron;
There is evidence that events such as the Medieval Warm Period, the Little Ice Age, the Roman Warm Period, the Dark Ages Cold Period (not in that order, of course) are not just regional events.
And there have been significant questions raised about the "hockey stick" analogy.
You need to remember that the Brits (Maggie Thatcher) came up with the current "CO2 causes global warming" paradigm (http:www.john-daly.com/history.htm ) and thus they do not want to turn loose of it.
The carbon dioxide in the atmosphere measures about 390 ppm (+/-), that's parts per million. Another analogy that I use in my blog is 4 out of 10,000. In other words, if atmospheric components were converted to 10,000 pennies ($100), CO2 would represent 4 pennies.
There are other human practices that might contribute to global warming, but carbon dioxide increases would be very, very small contributors. Deforestation may play a bigger role, but the U.S. ain't doing most of that.
It is a political animal.
Posted by: joe-6-pack at October 19, 2005 04:36 PM