EGU24-1253, updated on 08 Mar 2024
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

AMOC weakening and its association with increased dynamic sea level in recent decades 

Emmanuel Eresanya1, Gerard McCarthy1, Jennifer MecKing2, He Yinghui3, and Adekunle Osinowo4
Emmanuel Eresanya et al.
  • 1National University of Ireland, Maynooth University, Geography, Maynooth, Ireland (
  • 2National Oceanography Center, Southampton United Kingdom (
  • 3State Key Laboratory, South China Sea Institute of Oceanology, Guangzhou, China (
  • 4Department of Marine Sciences, Federal University of Technology, Akure, Nigeria(

The Atlantic Meridional Overturning Circulation (AMOC) is a crucial mechanism of poleward heat transport in the ocean and climate system. It modulates the redistribution of heat and carbon in the northern hemisphere. The state of AMOC in recent decades has revealed a slowdown compared to the industrial era. Its state is linked to a number of physical factors, including sea level. Along the eastern seaboard of North America, on long timescales, the imprint of the AMOC is projected onto sea level patterns. The relationship between AMOC weakening and sea level is not clearly understood. This study investigates the state of the AMOC in recent decades and its link to the regional sea level using CMIP6 and RAPID datasets.

One of the most critical questions in ocean science is whether climate models and observations of the state of the AMOC in recent decades are consistent. If these datasets show significant differences, it could lead to a bias in our projected long-term climate knowledge. This study shows the potential of sea level data to inform the evolution of the AMOC to constrain and improve future projections.

How to cite: Eresanya, E., McCarthy, G., MecKing, J., Yinghui, H., and Osinowo, A.: AMOC weakening and its association with increased dynamic sea level in recent decades , EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-1253,, 2024.