A new study by NASA and ESA (European Space Agency) shows that ice in both Polar Regions is melting at an accelerating rate (up to 5 times the rate of a few years ago).

The study was produced by an international collaboration — the Ice Sheet Mass Balance Inter-comparison Exercise (IMBIE) — that combined observations from 10 satellite missions to develop the first consistent measurement of polar ice sheet changes. The researchers reconciled differences among dozens of earlier ice sheet studies by carefully matching observation periods and survey areas. They also combined measurements collected by different types of satellite sensors, such as ESA’s radar missions; NASA’s Ice, Cloud and land Elevation Satellite (ICESat); and the NASA/German Aerospace Center’s Gravity Recovery and Climate Experiment (GRACE).

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