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Politics : Foreign Affairs Discussion Group

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To: Hawkmoon who wrote (15563)	1/7/2002 1:47:05 AM
From: frankw1900	Read Replies (1) of 281500

Hawk, just catching up. At least 30-40 years ago NA scientists were concerned that the Soviet damming of rivers entering the Arctic ocean would have an effect on climate as it would decrease the size of the ice cap. As I remember it the argument went something like this. The fresh water floating on the colder, denser salt water freezes at a higher temperature so the ice cap forms faster and lasts longer insulating the salt H2O below. Without the ice cap reflecting sunlight the general temperature regime there gradually would become warmer. It has. Indeed, these days muskeg in northern Canada is becoming smushier in the summers. I remember reading recently some speculation this might also have an effect on the North Atlantic conveyor. All grist for the mill. Very complicated.

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