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43-year-old mystery Polynya in Antarctica unraveled – ScienceDaily

A study led by NYU Abu Dhabi (NYUAD) Research scientist Diana Francis has unraveled the four decades mystery surrounding the existence of a middle water Polynya – a body of frozen sea that appeared within a thick body of ice during Antarctica's winter. almost two years ago. Maud-Rise Polynya was discovered in mid-September 2017 in the middle of an ice pack in the Antarctic Lazarev Sea, which led scientists to ask how this phenomenon occurred during Antarctica's coldest, winter months when the ice is its thickest. Due to its difficult access location, NYUAD researchers used a combination of satellite observations and re-analysis data to discover that cyclones (as intense as category 11 in Beaufort Scale) and the strong winds they carry over the ice pack to shift the ice opposite At the time of the discovery, Maud-Rise Polynya was approximately 9,500 square kilometers (equivalent to the land mass of the Connecticut state) and grew by over 740 percent to 800,000 square kilometers within a month. Eventually, Polynya fell with the open sea when the ice began to retreat at the beginning of the Australian summer months. Prior to 201 7, this phenomenon has only been known to have occurred in the 1970s when satellite observations began to become more common and since then have cursed scientists. "Once opened works Polynya as a window through the sea ice, transmits large amounts of energy during the winter between the sea and the atmosphere." Francis said. "Because of their large size, Polynya can…

A study led by NYU Abu Dhabi (NYUAD) Research scientist Diana Francis has unraveled the four decades mystery surrounding the existence of a middle water Polynya – a body of frozen sea that appeared within a thick body of ice during Antarctica’s winter. almost two years ago.

Maud-Rise Polynya was discovered in mid-September 2017 in the middle of an ice pack in the Antarctic Lazarev Sea, which led scientists to ask how this phenomenon occurred during Antarctica’s coldest, winter months when the ice is its thickest. Due to its difficult access location, NYUAD researchers used a combination of satellite observations and re-analysis data to discover that cyclones (as intense as category 11 in Beaufort Scale) and the strong winds they carry over the ice pack to shift the ice opposite At the time of the discovery, Maud-Rise Polynya was approximately 9,500 square kilometers (equivalent to the land mass of the Connecticut state) and grew by over 740 percent to 800,000 square kilometers within a month. Eventually, Polynya fell with the open sea when the ice began to retreat at the beginning of the Australian summer months. Prior to 201

7, this phenomenon has only been known to have occurred in the 1970s when satellite observations began to become more common and since then have cursed scientists.

“Once opened works Polynya as a window through the sea ice, transmits large amounts of energy during the winter between the sea and the atmosphere.” Francis said. “Because of their large size, Polynya can affect the climate regionally and globally when modifying ocean circulation. It is important for us to identify the triggers of their occurrence to improve their representation in the models and their effects on the climate.

“Considering the link between Polynya and cyclones we showed in this study, it is speculated that Polynya events may become more common during warmer climates because these areas will be more vulnerable to more intense cyclones. Previous studies have shown that during warmer climates, polar cyclone activity will intensify, and extratropic cyclone traces will move toward Antarctica, which may reduce marine expansion and make [Polynya] areas closer to the cyclone formation “

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Materials that provided by New York University Note: Content may be edited for style and length.

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