Spatial and temporal distribution of mass loss from the Greenland Ice Sheet since AD 1900

  title={Spatial and temporal distribution of mass loss from the Greenland Ice Sheet since AD 1900},
  author={Kristian K. Kjeldsen and Niels J. Korsgaard and Anders Anker Bj{\o}rk and Shfaqat Abbas Khan and Jason E. Box and Svend Funder and Nicolaj K. Larsen and Jonathan L. Bamber and William T. Colgan and Michiel van den Broeke and Marie-Louise Siggaard-Andersen and Christopher Nuth and Anders Schomacker and Camilla S Andresen and Eske Willerslev and Kurt H. Kj{\ae}r},
The response of the Greenland Ice Sheet (GIS) to changes in temperature during the twentieth century remains contentious, largely owing to difficulties in estimating the spatial and temporal distribution of ice mass changes before 1992, when Greenland-wide observations first became available. The only previous estimates of change during the twentieth century are based on empirical modelling and energy balance modelling. Consequently, no observation-based estimates of the contribution from the… Expand
Rate of mass loss from the Greenland Ice Sheet will exceed Holocene values this century.
The results indicate, with high confidence, that the rate of mass loss from the GIS will exceed Holocene rates this century, and mass loss over the twenty-first century will exceed the maximum rates over the past 12,000 years. Expand
Climate science: A history of Greenland's ice loss
It is shown that the Greenland Ice Sheet lost mass over the entire twentieth century, but that the recent rate of loss is more than double the earlier rates. Expand
On the recent contribution of the Greenland ice sheet to sea level change
Abstract. We assess the recent contribution of the Greenland ice sheet (GrIS) to sea level change. We use the mass budget method, which quantifies ice sheet mass balance (MB) as the differenceExpand
Forty-six years of Greenland Ice Sheet mass balance from 1972 to 2018
Even in years of high SMB, enhanced glacier discharge has remained sufficiently high above equilibrium to maintain an annual mass loss every year since 1998, and the acceleration in mass loss switched from positive in 2000–2010 to negative in 2010–2018, which illustrates the difficulty of extrapolating short records into longer-term trends. Expand
Geodetic measurements reveal similarities between post–Last Glacial Maximum and present-day mass loss from the Greenland ice sheet
The new deglaciation history and GIA uplift estimates suggest that studies that use the Gravity Recovery and Climate Experiment satellite mission to infer present-day changes in the GrIS may have erroneously corrected for GIA and underestimated the mass loss by about 20 gigatons/year. Expand
Greenland ice sheet mass balance from 1840 through next week
Abstract. The mass of the Greenland ice sheet is declining as mass gain from snowfall is exceeded by mass loss from surface meltwater runoff, marine-terminating glacier calving and submarine melting,Expand
Impact of different atmospheric forcings on surface mass balance estimates in Greenland
The Greenland Ice sheet (GIS) is the second largest ice sheet on Earth and thus stores a large amount of Earths freshwater. Because of climate change and the Arctic amplification, GIS is experiencingExpand
Dynamic changes in outlet glaciers in northern Greenland from 1948 to 2015
Abstract. The Greenland Ice Sheet (GrIS) is losing mass in response to recent climatic and oceanic warming. Since the mid-1990s, tidewater outlet glaciers across the ice sheet have thinned,Expand
Geodetic and model data reveal different spatio-temporal patterns of transient mass changes over Greenland from 2007 to 2017
Abstract Much of the research to understand the ice mass changes of Greenland ice sheet (GrIS) has focused on detecting linear rates and accelerations at decadal or longer periods. The transientExpand
Seasonal to decadal variability in ice discharge from the Greenland Ice Sheet
Rapid changes in thickness and velocity have been observed at many marine-terminating glaciers in Greenland, impacting the volume of ice they export, or discharge, from the ice sheet. While annualExpand


An improved mass budget for the Greenland ice sheet
Extensive ice thickness surveys by NASA’s Operation IceBridge enable over a decade of ice discharge measurements at high precision for the majority of Greenland’s marine-terminating outlet glaciers,Expand
Time-evolving mass loss of the Greenland Ice Sheet from satellite altimetry
Mass changes of the Greenland Ice Sheet may be estimated by the input–output method (IOM), satellite gravimetry, or via surface elevation change rates (d H /d t ). Whereas the first two have beenExpand
Volume and mass changes of the Greenland ice sheet inferred from ICESat and GRACE
Abstract This study examines the recent evolution of the Greenland ice sheet and its six major drainage basins. Based on laser altimetry data acquired by the Ice, Cloud and Land Elevation SatelliteExpand
Greenland ice sheet mass balance: a review.
The mass loss of different sectors is revisited and it is shown that they manifest quite different sensitivities to atmospheric and oceanic forcing and recent progress in constructing coupled ice-ocean-atmosphere models required to project realistic future sea-level changes is discussed. Expand
Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise
[1] 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. ConsiderableExpand
Rates of southeast Greenland ice volume loss from combined ICESat and ASTER observations
[1] Repeat satellite laser altimetry is critical for observing the rapidly changing mass balance of the Greenland Ice Sheet. However, sparse sampling and high surface slopes over rapidly thinning,Expand
Revised estimates of Greenland ice sheet thinning histories based on ice-core records
Abstract Ice core records were recently used to infer elevation changes of the Greenland ice sheet throughout the Holocene. The inferred elevation changes show a significantly greater elevationExpand
Mass balance of the Greenland ice sheet from 1958 to 2007
We combine estimates of the surface mass balance, SMB, of the Greenland ice sheet for years 1958 to 2007 with measurements of the temporal variability in ice discharge, D, to deduce the total iceExpand
Aerial Photographs Reveal Late–20th-Century Dynamic Ice Loss in Northwestern Greenland
The results suggest that the ice mass changes in this sector were primarily caused by short-lived dynamic ice loss events rather than changes in the surface mass balance, which challenges predictions about the future response of the Greenland Ice Sheet to increasing global temperatures. Expand
Partitioning Recent Greenland Mass Loss
The seasonal cycle in surface mass balance fully accounts for detrended GRACE mass variations, confirming insignificant subannual variation in ice sheet discharge. Expand