Keeping watch on Greenland’s rapidly disappearing ice

A map of Greenland ice sheet velocity created using data from Sentinel-1A in January–March 2015 and complemented by the routine 12-day repeat acquisitions of the margins since June 2015. The Zachariae Isstrom glacier in the northeast is changing rapidly, and recently reported as having become unmoored from a stabilising sill and now crumbling into the North Atlantic Ocean. Ice sheet in motion. Colour scale in metres per day. Credit: Copernius Sentinel Data (2015) Enveo/ ESA CCI/FFG