Interglacial instability of North Atlantic Deep Water ventilation

Author:

Galaasen Eirik Vinje1ORCID,Ninnemann Ulysses S.1ORCID,Kessler Augustin2ORCID,Irvalı Nil1ORCID,Rosenthal Yair3,Tjiputra Jerry2ORCID,Bouttes Nathaëlle4ORCID,Roche Didier M.45ORCID,Kleiven Helga (Kikki) F.1ORCID,Hodell David A.6ORCID

Affiliation:

1. Department of Earth Science and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway.

2. NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway.

3. Institute of Marine and Coastal Sciences and Department of Earth and Planetary Sciences, Rutgers University, New Brunswick, NJ, USA.

4. Laboratoire des Sciences du Climat et de l’Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France.

5. Earth and Climate Cluster, Department of Earth Sciences, Vrije Universiteit Amsterdam, Amsterdam, Netherlands.

6. Godwin Laboratory for Paleoclimate Research, Department of Earth Sciences, University of Cambridge, Cambridge, UK.

Abstract

Disrupting deep circulation Atlantic Meridional Overturning Circulation (AMOC) and the related process of North Atlantic Deep Water (NADW) have been thought to be stable during warm, interglacial periods. Galaasen et al. report that episodes of reduced NADW over the past 500,000 years actually have been relatively common and occasionally long-lasting features of interglacials and that they can occur independently of the catastrophic freshwater outburst floods normally thought to be their cause (see the Perspective by Stocker). This discovery implies that large NADW disruptions might be more likely than we have assumed in the warmer climate of the future. Science , this issue p. 1485 ; see also p. 1425

Funder

Norges Forskningsråd

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference56 articles.

1. T. F. Stocker D. Qin G.-K. Plattner M. M. B. Tignor S. K. Allen J. Boschung A. Nauels Y. Xia V. Bex P. M. Midgley Eds. Climate Change 2013: The Physical Science Basis: Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (Cambridge Univ. Press 2013).

2. Observations, inferences, and mechanisms of the Atlantic Meridional Overturning Circulation: A review

3. The Oceanic Sink for Anthropogenic CO 2

4. Influence of CO2 emission rates on the stability of the thermohaline circulation

5. Thermohaline Convection with Two Stable Regimes of Flow

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