Antarctic Mass Change from GRACE derived Gravity Observations: Jan 2004 - Jun 2014
GRACE, NASA's Gravity Recovery and Climate Experiment, consists of twin co-orbiting satellites that fly in a near polar orbit separated by a distance of 220 km. GRACE precisely measures the distance between the two spacecraft in order to make detailed measurements of the Earth's gravitational field. Since its launch in 2002, GRACE has provided a continuous record of changes in the mass of the Earth's ice sheets.
These animations show the change in the mass of the Antarctic Ice Sheet between January 2004 and June 2014 as measured by the pair of GRACE satellites. The 1-arc-deg NASA GSFC mascon solution data was resampled to a 5130 x 5130 data array using Kriging interpolation. A color scale was applied where blue values indicate an increase in the ice sheet mass while red shades indicate a decrease. In addition, a graph overlay shows the running total of the accumulated mass change in gigatons.
Four separate animations are shown here: one of the full Antarctic Ice Sheet (above) and three of individual regional views (below) showing the regions of West Antarctica, the Antarctic Peninsula and East Antarctica. The time-series of each region is shown with a graph depicting the ice loss for the region alone. Note that the range on the color scale is different for each regional view in order to portray the most detail possible. Areas outside the region being shown are colored in a pale green to indicate that it is not included in the view. The floating ice shelves, shown in a lighter shade of green, are also not included.
Technical Note: The glacial isostatic adjustment signal (Earth mass redistribution in response to historical ice loading) has been removed using the ICE-6G model (Peltier et al. 2015).
An animation of mass change over the Antarctic Ice Sheet from GRACE derived gravity observations.
This video is also available on our YouTube channel.
An animation of mass change over the West Antarctic Ice Sheet from GRACE derived gravity observations. Regions colored in pale green are excluded from this regional animation.
An animation of mass change over the Antarctic Peninsula from GRACE derived gravity observations. Regions colored in pale green are excluded from this regional animation.
An animation of mass change over the East Antarctic Ice Sheet from GRACE derived gravity observations. Regions colored in pale green are excluded from this regional animation.
Credits
Please give credit for this item to:
NASA's Scientific Visualization Studio
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Visualizer
- Cindy Starr (Global Science and Technology, Inc.)
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Scientist
- Scott Luthcke (NASA/GSFC)
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Chief scientist
- Bryant Loomis (SGT)
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Technical support
- Laurence Schuler (ADNET Systems, Inc.)
- Ian Jones (ADNET Systems, Inc.)
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Project support
- Leann Johnson (Global Science and Technology, Inc.)
- Joycelyn Thomson Jones (NASA/GSFC)
- Eric Sokolowsky (Global Science and Technology, Inc.)
Release date
This page was originally published on Tuesday, October 27, 2015.
This page was last updated on Friday, August 2, 2024 at 3:41 PM EDT.
Series
This page can be found in the following series:Related papers
Luthcke, S.B., T.J. Sabaka, B.D. Loomis, A.A. Arendt, J.J. McCarthy, J. Camp (2013), Antarctica, Greenland and Gulf of Alaska land ice evolution from an iterated GRACE global mascon solution, J. Glac., Vol. 59, No. 216, 613-631, doi:10.3189/2013jJoG12j147.
Peltier, W.R., Argus, D.F. and Drummond, R. (2015) Space geodesy constrains ice-age terminal deglaciation: The global ICE-6G_C (VM5a) model.
J. Geophys. Res. Solid Earth, 120, 450-487, doi:10.1002/2014JB011176.
Luthcke, S.B., T.J. Sabaka, B.D. Loomis, A.A. Arendt, J.J. McCarthy, J. Camp (2013), Antarctica, Greenland and Gulf of Alaska land ice evolution from an iterated GRACE global mascon solution, J. Glac., Vol. 59, No. 216, 613-631, doi:10.3189/2013jJoG12j147.
Peltier, W.R., Argus, D.F. and Drummond, R. (2015) Space geodesy constrains ice-age terminal deglaciation: The global ICE-6G_C (VM5a) model.
J. Geophys. Res. Solid Earth, 120, 450-487, doi:10.1002/2014JB011176.
Datasets used
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Mascon Solution [Gravity Recovery and Climate Experiment (GRACE): Star Camera]
ID: 666This dataset can be found at: http://www.csr.utexas.edu/grace/spacecraft/
See all pages that use this dataset -
Bedmap2 (Antarctic Bedmap2 Topography)
ID: 786
Note: While we identify the data sets used on this page, we do not store any further details, nor the data sets themselves on our site.