Scientists have re-estimated the amount of ice Greenland has lost since the past 4-5 decades. The rapidly changing climate is destroying massive chunks of ice from Greenland. A study reveals the melt has already resulted in rising of sea level. In the upcoming years, the island will lose more due to increased levels of global warming. It is an unsafe condition for coastal cities across the globe. According to a study, published in the Proceedings of the National Academy of Sciences, rapidly rising sea level may affect people residing near coastal areas. It mainly highlights places like New York, Los Angeles, Miami, Tokyo, and Mumbai.
Scientists say around 40-50% of Earth’s population is in those cities which are unsafe in case of sea rise. The study reveals the world’s second largest, Greenland’s ice sheet is melting twice faster than that of the 1980s. Scientists and experts from California, Grenoble, Utrecht, and Copenhagen, participated in the finding. Eric Rignot, French glaciologist from the University of California at Irvine, is a co-author of the study. To rebuilt the mass balance of the Greenland Ice Sheet they compared estimates of the amount of ice that melted-out into the sea. They also used the amount of snowfall deposited in the drainage basins in the country since the past 46 years.
As a result, the scientists discovered that the ice is melting six times faster than ever thought. Eric said the 1980s were the starting point from where the climate started to drift significantly from natural instability. The finding says Greenland’s glaciers dropped around 286 billion tons of ice between 2010-2018. Thus from the past eight years’ sea-level rose by about 14 mm. Eric added that some glaciers have stopped melting, but they are changing rapidly, mainly those in the northeast and northwest of Greenland. Scientists say as glaciers will continue to speed up, it will result in melting of ice. They anticipate a constant rise in the rate of mass loss and contribution to sea level rise will speed up year by year.
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