Effects of climate change are slowing a key ocean circulation system with immense consequences for Earth’s climate if it collapses. For thousands of years, the circulating currents of the Atlantic Ocean have continuously regulated the temperatures of Europe and North America, producing a warming effect that allows them to enjoy relatively moderate weather conditions. One study, which looked at ice cores and ocean sediments, determined the AMOC was “in its weakest state in over a millennium”. Becoming denser, the water then sinks in the north Atlantic and whisks south along the ocean floor before “upwelling” to the surface again far into the southern hemisphere. Then glacial melt flooded the North Atlantic with fresh water, collapsing the system and causing temperatures in Europe to plunge.

Source: The North Africa Journal November 13, 2021 00:08 UTC