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Strategies & Market Trends : Booms, Busts, and Recoveries -- Ignore unavailable to you. Want to Upgrade?

To: elmatador who wrote (32553)	4/28/2003 12:03:01 PM
From: Moominoid	Read Replies (1) \| Respond to of 74559

Those wobbles drive the glacial/interglacial cycles within an ice age. Before 1 million years ago there was no ice age for the previous 225 million years. So the question I was asking was how did we end up in this ice age. Currently we are in an interglacial but maybe the ice age as a whole is finished? We don't know. Another different phenomenon is the way the atmosphere converts the incoming radiation to temperature. And the key parameter there is how much carbon dioxide and methane etc. is in it. That was much higher in hotter periods like 70 million years ago and lower now. It was lower in the glacial peaks and higher in the interglacials. The level now since we started dumping all this CO2 in the atmosphere is higher than it has been in a few million years. If we can keep it up there maybe we can avoid another glaciation cycle. Or maybe we trigger one faster... (in the long-run the danger is we run out of CO2 to keep things warm with :)). We just don't want to go to extremes of temperatures which we and nature are not adapted to. The Permian glaciation probably ended with volcanic activity raising the CO2 in the atmosphere. But I don't think there is a hard theory there.