Earth  ID: 3434

Updated Jakobshavn Glacier Calving Front Retreat from 2001 through 2006

Since measurements of Jakobshavn Isbrae were first taken in 1850, the glacier has gradually receded, finally coming to rest at a certain point for the past 5 decades. However, from 1997 to 2006, the glacier has begun to recede again, this time almost doubling in speed. The finding is important for many reasons. As more ice moves from glaciers on land into the ocean, ocean sea levels raise. Jakobshavn Isbrae is Greenland's largest outlet glacier, draining 6.5 percent of Greenland's ice sheet area. The ice stream's speed-up and near-doubling of ice flow from land into the ocean has increased the rate of sea level rise by about .06 millimeters (about .002 inches) per year, or roughly 4 percent of the 20th century rate of sea level increase. This animation shows the glacier's flow in 2000, along with changes in the glacier's calving front between 2001 and 2006.

This animation is an update of and extension to animation ID #3374. In this version, a pause is added on the approach to the Jakobshavn glacier in order to highlight the meltwater lakes visible on the Greenland ice sheet. In addition, semi-transparent overlays and text indicate different regions of the glacier before the calving lines are shown. After the calving front retreat, an additional segment shows a zoom to a global view. During the pull out, historic calving front locations are shown followed by a color overlay showing regions of increase and decrease in the Greenland ice sheet.

Visualization Credits

Cindy Starr (GST): Lead Visualizer
Waleed Abdalati (NASA/GSFC): Scientist
Richard Alley (Pennsylvania State University): Scientist
Bob Bindschadler (NASA/GSFC): Scientist
Jay Zwally (NASA/GSFC): Scientist
Konrad Steffen (University of Colorado): Scientist
Serdar Manizade (NASA/GSFC Wallops): Scientist
Gordon Hamilton (University of Maine): Scientist
Robert Thomas (NASA/GSFC-LaRC): Scientist
Ole Bennike (Geological Survey of Denmark and Greenland): Scientist
Anker Weidick (Geological Survey of Denmark and Greenland): Scientist
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio The Blue Marble data is courtesy of Reto Stockli (NASA/GSFC).

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Ice, Cloud, and land Elevation Satellite (ICESat)

Data Used:
Terra/ASTER/Calving Front Lines 07/02/2005, 08/08/2006
Landsat/TM/Calving Front Line 07/07/2001, 09/03/2002, 08/23/2003, 10/03/2004
Terra/ASTER/Band Combination 3, 2, 1 07/02/2005, 08/08/2006
Landsat-7/ETM+/Band Combination 3, 2, 1 07/07/2001, 09/03/2002, 08/23/2003, 10/03/2004
Terra and Aqua/MODIS/Blue Marble Land Cover
Aqua/AMSR-E/Daily L3 12.5km Tb, Sea Ice Concentration, and Snow Depth
Aqua/AMSR-E/Daily L3 6.25 km 89 GHz Brightness Temperature (Tb)
ICESat/GLAS 2003 - 2006
Terra/MODIS 06/25/2003 (Greenland)
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

DLESE >> Cryology
GCMD >> Earth Science >> Cryosphere
GCMD >> Earth Science >> Cryosphere >> Sea Ice
GCMD >> Earth Science >> Cryosphere >> Snow/Ice
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice
GCMD >> Earth Science >> Cryosphere >> Glaciers/Ice Sheets >> Glacier Elevation/Ice Sheet Elevation
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Ice Floes
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Sea Ice Concentration
GCMD >> Earth Science >> Cryosphere >> Sea Ice >> Sea Ice Motion
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Ice Growth/Melt
GCMD >> Earth Science >> Cryosphere >> Snow/Ice >> Ice Motion
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Ice Extent
GCMD >> Earth Science >> Hydrosphere >> Snow/Ice >> Ice Motion
NASA Science >> Earth

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version