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Current Atlantic Meridional Overturning Circulation weakest in last millennium

Authors
/persons/resource/caesar

Caesar,  Levke
Potsdam Institute for Climate Impact Research;

McCarthy,  G. D.
External Organizations;

Thornalley,  G. J. R.
External Organizations;

Cahill,  N.
External Organizations;

/persons/resource/Stefan.Rahmstorf

Rahmstorf,  Stefan
Potsdam Institute for Climate Impact Research;

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Citation

Caesar, L., McCarthy, G. D., Thornalley, G. J. R., Cahill, N., Rahmstorf, S. (in press): Current Atlantic Meridional Overturning Circulation weakest in last millennium. - Nature Geoscience.


Cite as: https://publications.pik-potsdam.de/pubman/item/item_24942
Abstract
The Atlantic meridional overturning circulation (AMOC)— one of Earth’s major ocean circulation systems— redistributes heat on our planet and has a major impact on climate. Here, we compare a variety of published proxy records to reconstruct the evolution of the AMOC since about 400 AD. Taken together these data presents a fairly consistent picture of the AMOC: After a long and relatively stable period follows an initial decline in the AMOC starting in the 19th Century, with a second, more rapid, decline following in the mid-20th Century. Taken together, these data suggest that, during the last decades, the AMOC has been at its weakest state for over a millennium.