AntarcticA is slowly melting

Between the time span of 1992 and 2017, over 3 trillion tons of ice got shredded from the heart of Antarctica, across the globe leading rise in sea level in an average of nearly 8 millimeters. Though it takes quite a long time to make any key changes happen to that much amount of ice, Antarctica is melting quicker than anyone expected, a recent study says this published in the journal.

Prior to 2012, ice was lost at a steady rate of about 83.8 billion tons (76 billion metric tons) per year, contributing about 0.008 inches (0.2 millimeters) a year to sea level rise. East Antarctica appears to be losing ice more steadily. From 2012 to 2017, the melt rate increased to more than 241 billion tons a year (219 billion metric tons). If the entire ice sheet were destabilized and melted into the sea, researchers estimate it would lead to 3 meters (9 ft) of sea-level rise globally. Scientists have always been eyeing the West Antarctic ice sheet as the least stable region of the continent, and a NASA-lead study confirmed that ice losses were accelerating there earlier this year.

That leap in ice loss is concentrated in West Antarctica, where losses jumped from 53 billion metric tons of ice in 1992 to 159 billion metric tons in 2017. By a decade later, between 2002 and 2007, that average annual loss went up to 73 billion metric tons-a 24-billion-metric-ton increase.

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According to the study, ice losses from Antarctica are causing sea levels to rise faster today than at any time in the past 25 years. These glaciers have the potential to raise sea levels by more than a metre which are unstable.

Tom Wagner, cryosphere program manager at NASA Headquarters in Washington, hopes to welcome a new era of Antarctic science with the May 2018 launch of the Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) mission and the upcoming launch of NASA's Ice, Cloud and land Elevation Satellite-2 (ICESat-2).

Scientists think that if there's change in the climatic condition any soon then the ice sheets in West Antarctica may collapse with the blink of an eye, resulting to massive rise in the sea level across the world.

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