Average yearly change in mass, in centimeters of water, during 2003-2010, as measured by NASA’s Gravity Recovery and Climate Experiment (GRACE) satellites, for just Greenland and Antarctica and their peripheral glaciers and ice caps. There are enormous ice loss rates over substantial regions of those two ice sheets. Blue represents ice mass loss, while red represents ice mass gain.
Image credit: NASA/JPL-Caltech/University of Colorado