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Stärz M, Jokat W, Knorr G, et al. Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge. Nat Commun. 2017;8:15681doi: 10.1038/ncomms15681.
Stärz, M., Jokat, W., Knorr, G., & Lohmann, G. (2017). Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge. Nature communications, 815681. https://doi.org/10.1038/ncomms15681
Stärz, Michael, et al. "Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge." Nature communications vol. 8 (2017): 15681. doi: https://doi.org/10.1038/ncomms15681
Stärz M, Jokat W, Knorr G, Lohmann G. Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge. Nat Commun. 2017 Jun 05;8:15681. doi: 10.1038/ncomms15681. PMID: 28580952; PMCID: PMC5465373.
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Nat Commun. 2017 Jun 05;8:15681. doi: 10.1038/ncomms15681.

Threshold in North Atlantic-Arctic Ocean circulation controlled by the subsidence of the Greenland-Scotland Ridge.

Nature communications

Michael Stärz, Wilfried Jokat, Gregor Knorr, Gerrit Lohmann

Affiliations

  1. Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, Bremerhaven 27570, Germany.

PMID: 28580952 PMCID: PMC5465373 DOI: 10.1038/ncomms15681

Abstract

High latitude ocean gateway changes are thought to play a key role in Cenozoic climate evolution. However, the underlying ocean dynamics are poorly understood. Here we use a fully coupled atmosphere-ocean model to investigate the effect of ocean gateway formation that is associated with the subsidence of the Greenland-Scotland Ridge. We find a threshold in sill depth (∼50 m) that is linked to the influence of wind mixing. Sill depth changes within the wind mixed layer establish lagoonal and estuarine conditions with limited exchange across the sill resulting in brackish or even fresher Arctic conditions. Close to the threshold the ocean regime is highly sensitive to changes in atmospheric CO

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