Sea ice cover around Antarctica has fallen below 2 million square kilometers for the third year in a row.
The latest data from the US National Snow and Ice Data Center confirms that the last three years have been the lowest period of sea ice around Antarctica. Since satellite measurements began in 1979
Scientists say that Another year of very low ice levels is evidence that Antarctica’s sea ice is changing suddenly and with long-term consequences.
Sea ice around Antarctica is usually at its lowest during the peak summer months. which falls in February each year
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But on February 18th the five-day average of Antarctic sea ice dropped to 1.99 million square kilometers and was 1.98 million square kilometers on February 21. while the lowest record was 1.78 million square kilometers in February last year.
Sea ice around Antarctica is at its maximum in September. But last year, the amount of ice during that period had reached an all-time low. Scientists were shocked that so little ice was recovering. which has never happened before
Ice levels appear to have returned slightly in December. But since then it has fallen further to its current level.
There is no reliable way to measure how thick the Antarctic sea ice is, but Arian Purich, a climate scientist who specializes in the Antarctic and the Southern Ocean, According to Monash University in Australia, It is possible that the ice that returns thinner than usual.
Scientists are still looking for answers. What is causing the amount of sea ice to decrease? But they worry that global warming could be a factor. Especially the Southern Ocean that surrounds Antarctica. The temperature has risen.
Sea ice reflects energy from the sun. This means less ice could make the oceans warmer. Antarctica’s ecology is also tied to sea ice. Since the appearance of phytoplankton that can remove carbon from the atmosphere. to be a breeding ground for penguins
Last year’s research by Puric showed that Antarctic sea ice is subject to major changes caused by ocean temperatures rising 100 meters below the surface.
In research published this month in the Journal of Climate, scientists looked at changes in the amount of sea ice and where it occurs each year. In two periods, between 1979 – 2006 and 2007 – 2022, it was found that the amount of sea ice had been more variable or abnormal in the latter period. They concluded that both sudden and long-term changes are occurring in Antarctica. But I still can’t tell you why.
Scientists have warned that the disappearance of sea ice is just one of several major changes in Antarctica that are likely to have a global impact.
Scientists have increasingly called on the governments of different countries to pay more attention to changes in Antarctica. while lamenting the relative lack of data from the continent and its surroundings.
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