Fig. 1. Simulated vertical and horizontal rates of displacement and rate of geoid height variations (a) in Alaska and western Canada and (b and c) across the Alps between the periods of 1990/1991 and 2010/2011. Simulated rates are from the Regional Elastic Rebound Calculator (REAR) and show deformation changes with unprecedented realism and precision. The rates of mass loss are −43.9 and −2.5 gigatons per year, respectively. The model’s resolution corresponds to roughly 1 kilometer on the Earth’s surface. Blue areas in the insets show the extent of ice sources employed in these runs. Computing these maps requires only 3.5 minutes on a midrange workstation.