Ian M. Howat

TL;DR: In this paper, the authors have mapped the flow velocity over much of the Greenland ice sheet for the winters of 2000/01 and 2005/06 using RADARSAT synthetic aperture radar data.

TL;DR: The rapid (<2 hours) drainage of a large supraglacial lake down 980 meters through to the bed of the Greenland Ice Sheet initiated by water-driven fracture propagation evolving into moulin flow coincided with increased seismicity, transient acceleration, ice-sheet uplift, and horizontal displacement.

TL;DR: A new compilation of Greenland bed topography that assimilates seafloor bathymetry and ice thickness data through a mass conservation approach is presented, yielding major improvements over previous data sets, particularly in the marine‐terminating sectors of northwest and southeast Greenland.

TL;DR: In this article, a reassessment of the temporal and spatial distribution of glacier change is presented, which supports recent model projections that surface mass balance, rather than ice dynamics, will dominate the ice sheet contribution to 21st century sea level rise.

TL;DR: Using satellite-derived surface elevation and velocity data, major short-term variations in recent ice discharge and mass loss at two of Greenland's largest outlet glaciers are found, pointing to an alternative source of loss and the need for high-resolution observations of outlet dynamics and glacier geometry for sea-level rise predictions.