June 16, 2009

A very big Niagara !

FROM-Climate Sanity

More on Thermohaline Circulation

In a previous post “The Thermohaline Circulation Only Stops for Extreme, Unrealistic Models,” I compared the amount of fresh water used in “hosing experiment” models to drastically reduce the thermohaline circulation (THC, or Meridional Overturning Circulation, MOC) to the amount of water flowing over Niagara Falls, or flowing from all rivers into the Arctic, or coming off of Greenland due to melting ice.

The key number was one Sverdrup, or 1 million cubic meters of fresh water per second. One Sverdrup of fresh water artificially dumped into the Labrador sea, for 100 years would have the feared effect. But it turns out that one Sverdrup of fresh water is 350 times the amount of water flowing over Niagara falls, and about 300 times the amount of water from melting ice that flows off of Greenland. It was seen that there is not plausible source for this amount of extra fresh water to be dumped into the arctic........More...

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