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NASA's space laser missions map 16 years of ice sheet loss

NASA using its most advanced Earth-observing laser instrument measured how elevation of Greenland and Antarctic ice sheets changed over 16 years. Scientists found net loss of Antarctica's ice, along with Greenland's shrinking ice sheet, responsible for roughly half-inch sea level rise between 2003 and 2019. Greenland's ice sheet lost an average of 200 gigatons of ice per year, study said.

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