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Author Topic: Greenland's Melting Could Cool the Atlantic  (Read 2201 times)

Bob Wallace

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Greenland's Melting Could Cool the Atlantic
« on: May 17, 2013, 09:14:06 PM »
Greenland ice melting at an expanding pace may begin cooling the North Atlantic and increasing the severity of storms by 2075, said James Hansen, the former NASA scientist who raised concerns about global warming in the 1980s.

“If we stay on this path where the rate of mass loss from Greenland doubles every 10 years, we would get to a situation by about 2075 or 2080 where the mass loss is so fast that it causes the whole North Atlantic to be colder,” Hansen said in London.


Inflows of cold, fresh water from Greenland would slow deep currents that carry cold water south, cooling the North Atlantic as tropical waters get warmer, Hansen said. That would increase a “temperature gradient” that’s conducive to stronger storms.


The findings add to research showing the system of Atlantic currents that channels the warm Gulf Stream to the northeast and moves colder, deeper waters south may slow this century because of climate change. Possible effects include cooler temperatures for Europe -- or a moderation of rising temperatures -- and higher sea levels in New York, past studies have found.

The United Nations Intergovernmental Panel on Climate Change will this year publish the first section of a four-part report of its first comprehensive review of the climate since 2007. A leaked draft in December said it’s “very likely” the Atlantic Meridional Overturning Circulation -- the system of currents in the ocean -- will weaken this century. It is “very unlikely” it will collapse completely, the report showed.
« Last Edit: May 18, 2013, 07:35:49 AM by Bob Wallace »


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Re: Greenland's Melting Could Cool the Atlantic
« Reply #1 on: May 18, 2013, 06:25:08 PM »
Was this not Wally Broeckers mechanism for the Younger Dryas? (Not Greenland though)
Take it for granted you are wrong.
Just try to work out what about and why.