Those Southern Ocean winds pulling the deep water up act “like a powerful pump keeps the AMOC running even in the extreme climate change scenarios,” Baker said.
A possible climate change -triggered shutdown of what's called the Atlantic Meridional Overturning Circulation or AMOC could play havoc with global rain patterns, dramatically cool Europe while warming the rest of the world and goose sea levels on America's East Coast, scientists predict.
Scientists at the United Kingdom's Met Office and the University of Exeter used simulations from 34 different computer models of extreme climate change scenarios to see if the AMOC would collapse this century, according to a study in Wednesday's journal Nature.
Baker's focus on the pulling up of water from the deep instead of just concentrating on the sinking is new and makes sense, providing a counterpoint to the studies saying collapse is imminent, said Oregon State University climate scientist Andreas Schmittner, who wasn't part of the research.
If the AMOC weakens but not fully collapses, many of the same impacts — including crop losses and changes in fish stock — likely will still happen, but not the big headline one of Europe going into a deep freeze, Baker said.
