Changes in Atlantic currents may have dire climate implications for the next century | Andrew Meijers

Changes in Atlantic currents may have dire climate implications for the next century | Andrew Meijers

Without modifying human behaviour we run the risk of violent weather swings and a drastic effect on crops and ocean life

The ocean circulation that keeps our relatively northern corner of Europe warm(ish) is often likened to a gigantic conveyor belt bringing warm equatorial water northwards at the surface, balanced by cold southward flow at great depth. The Atlantic Meridional Overturning Circulation, or AMOC for short, brings heat energy northward at the equivalent rate of 10 Hiroshima bombs every second and keeps our weather mild, and just a little bit too damp, and is critical to the wider climate.

New research has provided important long-term context for scientists’ observations of these Atlantic currents that bring warmth and climatic stability to our shores, with concerning implications for the coming century. Changes in the AMOC in the geologic past have caused significant local and global impacts, and for several decades now oceanographers have been monitoring its strength.

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