New climate model suggests AMOC ocean current slowdown would be gradual and reversible if warming stops
By
Alec Luhn
Summary
New climate modeling research suggests that the Atlantic Meridional Overturning Circulation (AMOC) — a critical system of ocean currents — would weaken gradually under increased Greenland meltwater, not collapse abruptly. Crucially, the model indicates this slowdown would be reversible if global warming were halted and CO2 levels reduced, countering fears of an irreversible tipping point.
Source
Twitter / XNew climate model suggests AMOC ocean current slowdown would be gradual and reversible if warming stopsnewscientist.comKey quotes
· 3 pulledThe AMOC is a system of currents that brings warm, salty, tropical water into the North Atlantic Ocean, where it cools, sinks and returns southwards along the seabed.
Fresh water melting from the Greenland ice sheet appears to be mixing with this dense seawater and slowing its cascade down to the ocean floor.
Scientists worry that a surge of meltwater from Greenland could irreversibly collapse the Atlantic Meridional Overturning Circulation, but new modelling suggests the weakening of the current could be reversed if CO2 levels come back down
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