Scientists have discovered the secret of the mysterious hole in Antarctica
In 2017, scientists from the University of Toronto beheld extremely unusual sight - the cold winter months when ice is particularly thick on the surface of Antarctica formed a big hole. Then scientists could not explain the reason for this phenomenon, but now, thanks to the combination of satellite data and climate models, the researchers were finally able to give quite a convincing answer. The results shared by scientists from New York University in Abu Dhabi.
interest has emerged on the polynya was special, because at the same location in Antarctica in the 1970s, the same hole was discovered. Then the satellite technology was not so advanced and the more scientists could not give a scientific explanation for the unusual phenomenon. After nearly half a century, the situation repeated itself - originally open water area of 9,500 square kilometers, but then increased by more than 740% and amounted to 800 thousand square kilometers. Later hole merged with the open ocean.
By comparing satellite images and information on the climate, the researchers found that the ice-hole formed at the same time over the region raging cyclones and strong winds. According to scientists, a strong blow caused the displacement of the ice and out of warm water on the surface, because of which a hole for a long time did not freeze. Merged with the oceans, ice-hole could have a big impact on regional climate, changing the circulation of water in the ocean.
Global increase the Earth's temperature can enhance the activity polar cyclones, however hole in Antarctica surface may increasingly formed. It is noteworthy that, due to an elevated temperature they will be slower to freeze and close. This, in turn, can affect not only the regional weather, but also cause a large-scale climate change.
Antarctica is full of surprises - most recently under its isolated lake Mercer remains of extinct organisms were found. Details of this discovery can be read in our material.
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