Recent Sea-Level Contributions of the Antarctic and Greenland Ice Sheets

  title={Recent Sea-Level Contributions of the Antarctic and Greenland Ice Sheets},
  author={Andrew Shepherd and Duncan J. Wingham},
  pages={1529 - 1532}
After a century of polar exploration, the past decade of satellite measurements has painted an altogether new picture of how Earth's ice sheets are changing. As global temperatures have risen, so have rates of snowfall, ice melting, and glacier flow. Although the balance between these opposing processes has varied considerably on a regional scale, data show that Antarctica and Greenland are each losing mass overall. Our best estimate of their combined imbalance is about 125 gigatons per year of… 
FAQ 13.2: Will the Greenland and Antarctic Ice Sheets Contribute to Sea Level Change over the Rest of the Century?
The Greenland, West and East Antarctic ice sheets are the largest reservoirs of freshwater on the planet. As such, they have contributed to sea level change over geological and recent times. They
Earth’s ice: Sea level, climate, and our future commitment
The world’s icy and snowy regions—the cryosphere—are where the most profound changes will occur as the globe continues warming. In many areas, the levels of cryospheric change today are surpassing
Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise
Ice sheet mass balance estimates have improved substantially in recent years using a variety of techniques, over different time periods, and at various levels of spatial detail. Considerable
A Reconciled Estimate of Ice-Sheet Mass Balance
There is good agreement between different satellite methods—especially in Greenland and West Antarctica—and that combining satellite data sets leads to greater certainty, and the mass balance of Earth’s polar ice sheets is estimated by combining the results of existing independent techniques.
Oceanic Forcing of Ice-Sheet Retreat: West Antarctica and More
Ocean-ice interactions have exerted primary control on the Antarctic Ice Sheet and parts of the Greenland Ice Sheet, and will continue to do so in the near future, especially through melting of ice
Trends in Antarctic Ice Sheet Elevation and Mass
Fluctuations in Antarctic Ice Sheet elevation and mass occur over a variety of time scales, owing to changes in snowfall and ice flow. Here we disentangle these signals by combining 25 years of
A new sea-level record for the Neogene/Quaternary boundary reveals transition to a more stable East Antarctic Ice Sheet
A detailed record of North Atlantic deep-ocean temperature, global sea-level, and ice-volume change for ∼2.75 to 2.4 Ma is presented, strongly suggesting a link between greater stability of the EAIS and increased land-ice volumes in the Northern Hemisphere.
Late Quaternary ice-ocean interactions in central West Greenland
A greater knowledge of the interactions between the Greenland Ice Sheet and climate is critical to understanding the possible impacts of future global warming, including ice sheet contribution to
Ice Sheet Stability and Sea Level
  • E. Ivins
  • Environmental Science, Geography
  • 2009
The total ice volume lost to the oceans from an unstable retreat of WAIS, which may occur if the part of the ice sheet that overlies submarine basins is ungrounded and moves to a new position down the negative slope, is calculated.


Mass balance of the Antarctic ice sheet
Mass gains from accumulating snow, particularly on the Antarctic Peninsula and within East Antarctica, exceed the ice dynamic mass loss from West Antarctica, which exacerbates the difficulty of explaining twentieth century sea-level rise.
Accelerated ice discharge from the Antarctic Peninsula following the collapse of Larsen B ice shelf
Interferometric synthetic‐aperture radar data collected by ERS‐1/2 and Radarsat‐1 satellites show that Antarctic Peninsula glaciers sped up significantly following the collapse of Larsen B ice shelf
Mass changes of the Greenland and Antarctic ice sheets and shelves and contributions to sea-level rise: 1992-2002
Changes in ice mass are estimated from elevation changes derived from 10.5 years (Greenland) and 9 years (Antarctica) of satellite radar altimetry data from the European Remote-sensing Satellites
Insignificant Change in Antarctic Snowfall Since the International Geophysical Year
There has been no statistically significant change in snowfall since the 1950s, indicating that Antarctic precipitation is not mitigating global sea level rise as expected, despite recent winter warming of the overlying atmosphere.
Acceleration of Greenland ice mass loss in spring 2004
The rate of ice loss increased by 250 per cent between the periods April 2002 to April 2004 and May 2004 to April 2006, almost entirely due to accelerated rates of ice Loss in southern Greenland; the rate of mass loss in north Greenland was almost constant.
Rapid discharge connects Antarctic subglacial lakes
Ice-sheet surface elevation changes in central East Antarctica are presented that are interpreted to represent rapid discharge from a subglacial lake, and it is suggested that entire sub glacial drainage basins may be flushed periodically.
Accelerated Sea-Level Rise from West Antarctica
Glacier thinning rates near the coast during 2002–2003 are much larger than those observed during the 1990s, providing exit routes for ice from further inland if ice-sheet collapse is under way.
Ocean Freshening, Sea Level Rising
  • W. Munk
  • Environmental Science
  • 2003
Global sea levels have been rising over the past century. It remains hotly debated, however, how fast this rise has been and which of the two causes--expansion of ocean waters due to warming, or
Freshening of the Ross Sea During the Late 20th Century
Ocean measurements in the Ross Sea over the past four decades reveal marked decreases in shelf water salinity and the surface salinity within the Ross Gyre, which appears to have resulted from a combination of factors, including increased precipitation, reduced sea ice production, and increased melting of the West Antarctic Ice Sheet.