NASA | Lakes On A Glacier

How deep is that icy blue water on Greenland’s ice sheet? Dr. Allen Pope, of the National Snow and Ice Data Center, is using data from the NASA/USGS Landsat 8 satellite to find out. In this video, Dr. Pope shares what he sees when he looks at a Landsat image of the Greenland ice sheet just south of the Jakobshavn Glacier. Because the lakes are darker than the ice around them, they absorb more energy from the sun. A little bit of melt concentrates in one place, and then melts more, establishing a feedback