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Re: Global warming? I am more worried about global cooling.
The gulf current, among other things ,is driven by the thermal gradient between the warm gulf and cold north atlantic, with warm water flowing toward the cooler water.
Another potential is water density. Fresh water is less dense than salt water and will float on the top until it mixes in. Before we had warm-slightly less dense water from the equator flowing toward cold-denser water in the north atlantic, sort of two potentials. Now we have the same warm-less dense water from the equator flowing toward cold water that now is less dense than it used to be. The result is less potential. Once the melt down is complete and the fresh water mixes in, the stream will being to increase flow once again.
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