Researchers have identified the key factors that influence a vital pattern of ocean currents.
The Atlantic meridional overturning circulation (AMOC) carries warm water from the tropics northward.
Many scientists think that this heat transport makes areas including north-west Europe and the UK warmer than they would otherwise be.
Climate models suggest the AMOC is likely to weaken over the coming decades, with widespread implications for regional and global climate.
Read more at University of Exeter
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