A NASA satellite and aircraft have been monitoring the ice sheet that sits on top of Greenland for years. An analysis of their data is providing a dynamic view of the sheet as it loses mass.
The Greenland ice sheet covers about 80 percent of the island with a cap that averages a mile in thickness. In some areas, it can be up to almost two miles thick. It comprises almost 684,000 cubic miles of ice, which would significantly raise sea levels if it melts.
Top Image: Adventure tourists near an Iceberg in Ittoqqortoormiit in eastern Greenland via Shutterstock.