Thursday, January 05, 2017

The Day After Tomorrow' could become a reality: Climate change could cause ocean currents to collapse

[Daily Mail] In the 2004 film, 'The Day After Tomorrow', ocean currents around the world stop as a result of global warming, leading to a catastrophic storm which wipes out major cities around the world.
And experts believe that the terrifying plot could soon become a reality.
A new study suggests that ocean circulation patterns could collapse in the near future, plunging the Northern hemisphere into an ice age.
Previous studies have estimated that carbon dioxide levels will double to 700 ppm by 2100. If this is the case, ocean currents could collapse by the year 2400. 
Researchers from the Scripps Institution of Oceanography at the University of California San Diego have shown that climate models may be drastically underestimating the possibility of ocean circulations collapsing.
They found that a bias in most climate models exaggerates the stability of a pattern, called the Atlantic Meridonial Overturning Circulation (AMOC).
When the researchers removed this bias, they predicted that circulation could collapse in the future, setting off large-scale cooling in the North Atlantic.
The collapse would stop the AMOC, which delivers warm water towards Greenland then sinks as it cools and flows back towards the equator. Read More