Remember how the world was about to collapse in the movie ‘Day After Tomorrow’? Well, scientists believe that it could soon become reality.
Researchers from Scripps Institute of Oceanography suggest that the oceanic circulation pattern could collapse, plunging the Northern Hemisphere into the Ice Age.
The previous research estimated that the ocean currents circulation could collapse by the year 2400 if carbon dioxide levels increase to 700 ppm by 2100. A new research says it could be a lot sooner.
The new research, however, believes that the earlier study had a strong bias towards the stability of the Atlantic Meridional Overturning Circulation.
When the new research removed the bias, it predicted that the circulation could stop a lot sooner, triggering large-scale cooling in North Atlantic. The collapse would stop AMOC, which delivers warm water towards Greenland and sinks as it cools and then moves towards the equator.
Wei Liu, who lead the study said:
The significance of our study is to point out a systematic bias in current climate models that hinders a correct climate projection.
A bias-corrected model puts the AMOC in a realistic stability regime and predicts a future AMOC collapse with prominent cooling over the northern North Atlantic and neighbouring areas. Our study has enormous implications for regional and global climate change.
The prediction showed that the circulation will collapse after 300 years once the carbon dioxide concentration doubles. This will lead to an imbalance in AMOC which relies on the balance between salt water and fresh water.
It is time that we check our carbon footprint or else we might be on the brink of extinction.