The AMOC stayed strong even as a major ocean “lifeline” nearly shut down
Geological evidence indicates that the Atlantic Meridional Overturning Circulation (AMOC) can remain stable even when the 'Agulhas Leakage' of warm water from the Indian Ocean weakens. This challenges long-held textbook theories about the drivers of global ocean circulation.
Why it matters
Understanding the resilience of the AMOC is critical for predicting how global climate systems will respond to future environmental changes.
Scientists have long believed that warm, salty water flowing from the Indian Ocean around the southern tip of Africa and into the Atlantic helps support one of the planet's most important ocean circulation systems. This flow, known as Agulhas Leakage, has been considered a major contributor to the Atlantic Meridional Overturning Circulation (AMOC), which forms part of the global ocean conveyor system.
New findings from an international research team based in the Netherlands, USA, China and UK suggest that this relationship is more complicated than previously assumed. Their results indicate that changes in Agulhas Leakage do not always produce the expected response in deep water formation. The study offers a clearer picture of how the AMOC works and how its behavior may vary under different climate conditions.
Testing a Textbook Explanation of the AMOC
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