Constraining the mass balance of East Antarctica

@article{MartnEspaol2017ConstrainingTM,
  title={Constraining the mass balance of East Antarctica},
  author={Alba Mart{\'i}n‐Espa{\~n}ol and Jonathan L. Bamber and Andrew Zammit‐Mangion},
  journal={Geophysical Research Letters},
  year={2017},
  volume={44},
  pages={4168 - 4175}
}
We investigate the mass balance of East Antarctica for the period 2003–2013 using a Bayesian statistical framework. We combine satellite altimetry, gravimetry, and GPS with prior assumptions characterizing the underlying geophysical processes. We run three experiments based on two different assumptions to study possible solutions to the mass balance. We solve for trends in surface mass balance, ice dynamics, and glacial isostatic adjustment. The first assumption assigns low probability to ice… 
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References

SHOWING 1-10 OF 39 REFERENCES
Simultaneous solution for mass trends on the West Antarctic Ice Sheet
Abstract. The Antarctic Ice Sheet is the largest potential source of future sea-level rise. Mass loss has been increasing over the last 2 decades for the West Antarctic Ice Sheet (WAIS) but with
Antarctic ice-mass balance 2003 to 2012: regional reanalysis of GRACE satellite gravimetry measurements with improved estimate of glacial-isostatic adjustment based on GPS uplift rates
Abstract. We present regional-scale mass balances for 25 drainage basins of the Antarctic Ice Sheet (AIS) from satellite observations of the Gravity and Climate Experiment (GRACE) for time period
A synthesis of the Antarctic surface mass balance during the last 800 yr
Abstract. Global climate models suggest that Antarctic snowfall should increase in a warming climate and mitigate rises in the sea level. Several processes affect surface mass balance (SMB),
Improved representation of East Antarctic surface mass balance in a regional atmospheric climate model
This study evaluates the impact of a recent upgrade in the physics package of the regional atmospheric climate model RACMO2 on the simulated surface mass balance (SMB) of the Antarctic ice sheet. The
Antarctic contribution to sea level rise observed by GRACE with improved GIA correction
Antarctic volume changes during the past 21 thousand years are smaller than previously thought, and here we construct an ice sheet history that drives a forward model prediction of the glacial
Spatial and temporal Antarctic Ice Sheet mass trends, glacio‐isostatic adjustment, and surface processes from a joint inversion of satellite altimeter, gravity, and GPS data
TLDR
It is established that over the period 2003–2013, Antarctica has been losing mass at a rate of −84 ± 22 Gt yr−1, with a sustained negative mean trend of dynamic imbalance, which is partly compensated by a significant mass gain in East Antarctica due to a positive trend of surface mass balance anomalies.
Antarctica, Greenland and Gulf of Alaska land-ice evolution from an iterated GRACE global mascon solution
Abstract We have determined the ice mass evolution of the Antarctic and Greenland ice sheets (AIS and GIS) and Gulf of Alaska (GOA) glaciers from a new GRACE global solution of equal-area surface
An assessment of forward and inverse GIA solutions for Antarctica
TLDR
Uplift estimates for regions where many GIA models have traditionally placed their uplift maxima are found to be overestimated, which results in increased uncertainties on the ice‐sheet mass balance derived from gravimetry methods.
Increased ice losses from Antarctica detected by CryoSat‐2
We use 3 years of Cryosat‐2 radar altimeter data to develop the first comprehensive assessment of Antarctic ice sheet elevation change. This new data set provides near‐continuous (96%) coverage of
Mass gains of the Antarctic ice sheet exceed losses
During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt/yr (2.5% of input), as derived from ICESat laser measurements
...
...