Nordic overturning increases as AMOC weakens  in response to global warming

Roewer, Sasha; Fiedler, Lukas; Årthun, Marius; Huiskamp, Willem; Rahmstorf, Stefan

doi:10.5194/os-22-1195-2026

Articles | Volume 22, issue 2

https://doi.org/10.5194/os-22-1195-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-22-1195-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 22, issue 2

Research article

|

20 Apr 2026

Research article |

| 20 Apr 2026

Nordic overturning increases as AMOC weakens in response to global warming

Sasha Roewer, Lukas Fiedler, Marius Årthun, Willem Huiskamp, and Stefan Rahmstorf

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Dec 2025	1,346	326	16	1,688
Jan 2026	930	536	12	1,478
Feb 2026	516	266	40	822
Mar 2026	332	100	14	446
Apr 2026	3,350	343	31	3,724
May 2026	1,916	100	20	2,036
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Jul 2026	218	114	3	335
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Cumulative views and downloads (calculated since 23 Dec 2025)

Month	HTML	PDF	XML	Total
Dec 2025	1,346	326	16	1,688
Jan 2026	930	536	12	1,478
Feb 2026	516	266	40	822
Mar 2026	332	100	14	446
Apr 2026	3,350	343	31	3,724
May 2026	1,916	100	20	2,036
Jun 2026	134	47	20	201
Jul 2026	218	114	3	335
Aug 2026	167	41	16	224
Sep 2026	374	114	109	597
Oct 2026	329	139	44	512
Nov 2026	179	50	11	240

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Short summary

The Atlantic Meridional Overturning Circulation (AMOC) is weakening in response to global warming, while the Nordic Seas Overturning Circulation (NOC) is projected to strengthen. We suggest a feedback mechanism in which a weakened AMOC leads to reduced salt transport into the North Atlantic, decreasing the density in that region and potentially strengthening the NOC.