Jakobshavn Isbrae holds the record as Greenland's fastest moving glacier and major contributor to the mass balance of the continental ice sheet. Starting in late 2000, following a period of slowing down in the mid 1990s, the glacier showed significant acceleration and nearly doubled its discharge of ice. The following imagery from the Landsat satellite shows the retreat of Jakobshavn's calving front from 2001 to 2004. This animation is updated from #3053 and now includes the fall 2004 calving front derived from Terra/ASTER data. Note: Updated animation showing the calving front recession from 2001 to 2004. Data Collected: Landsat-7: 5/20/2001, 5/23/02, 5/19/03, Terra/ASTER: 5/30/04. Animator: Alex Kekesi (GST), Horace Mitchell (NASA/GSFC). Editor: Rich Melnick (HTSI). Scientist: Waleed Abdalati (NASA/HQ). Platforms/Sensors/Data Sets: Terra/ASTER, Landsat-7/ETM+/Band Combination 1, 2, 3.