Impact of North Atlantic - GIN Sea exchange on deglaciation evolution of the Atlantic Meridional Overturning Circluation

In a transient simulation of the last deglaciation with a fully coupled model (TraCE-21000), an overshoot of the Atlantic Meridional Overturning Circulation (AMOC) is simulated and proposed as a key factor for the onset of the Bølling-Allerød (BA) warming event. There is collaborating evidence for an AMOC overshoot at the BA in various proxy reconstructions although the mechanism governing its behavior is not well understood. Here, we present two new sensitivity experiments to explicitly illustrate the impact of North Atlantic - GIN Sea exchange on the AMOC's deglacial evolution. Results show that this oceanic exchange dominates the convection restarting in the GIN Sea, the occurrence of the AMOC overshoot, and the full BA warming.

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Copyright Authors 2011. This work is distributed under the Creative Commons Attribution 3.0 License.
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Author Cheng, J.
Liu, Z.
He, F.
Otto-Bliesner, Bette
C., Colose
Publisher UCAR/NCAR - Library
Publication Date 2011-09-25T00:00:00
Digital Object Identifier (DOI) Not Assigned
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Topic Category geoscientificInformation
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Metadata Date 2023-08-18T18:52:33.215142
Metadata Record Identifier edu.ucar.opensky::articles:11622
Metadata Language eng; USA
Suggested Citation Cheng, J., Liu, Z., He, F., Otto-Bliesner, Bette, C., Colose. (2011). Impact of North Atlantic - GIN Sea exchange on deglaciation evolution of the Atlantic Meridional Overturning Circluation. UCAR/NCAR - Library. http://n2t.net/ark:/85065/d7h132m5. Accessed 29 July 2025.

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