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Ice age climate simulations of a crucial component of ocean circulation, the Atlantic meridional overturning circulation (AMOC), are inconsistent between models, and are often at odds with observational data. In a new study researchers describe a series of climate simulations based on an ocean model that points to the cause of these discrepancies, and explains why the ice-age AMOC was apparently much more prone to abrupt transitions than the modern one. [Source: Nature News]
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