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You are here: Home / Tech & Science / Climate change disrupts ocean dynamics in Antarctica

Climate change disrupts ocean dynamics in Antarctica

March 4, 2014 Posted by Contributor

Researchers at McGill University, Canada suggested that heat from the depths of the ocean is being trapped under the Antarctic ice shelf and this could be another effect of climate change.

In the 1970s, researchers in Antarctica found an open body of water just like the of New Zealand within, within an ice pack in the Southern Ocean’s Weddell Sea.

Eric Galbraith, co-author of the study said, “The fact that we can still have a surprise like this after studying the climate system for decades shows just how complex and dangerous climate change is.”

polar-ice-664x437

Before this, researchers were of the view that phenomenon — known as the Weddell polynya — to be a rare occurrence but the study stated that polynya has not reappeared in the nearly 40 years since it closed due to the effects of the rising temperature on ocean salinity.

The researchers have held global warming responsible for the phenomenon.

The study, which was published in Nature Climate Change, said that polynya is unlikely to reappear. And in case, if it does, nearly 40-years worth of heat and carbon dioxide will be released from the depths of the ocean.

The increase in precipitation in the Southern Ocean and simultaneous melting of glaciers in Antarctica region, the ocean have flooded with large amounts of freshwater and prevented the warm water underneath from rising to the top,” it explained.

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Filed Under: Tech & Science Tagged With: Antarctica, climate change, Global warming

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