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ice sheet surface elevation

Simulating the Greenland ice sheet under present-day and palaeo constraints including a new discharge parameterization

Simulating the Greenland ice sheet under present-day and palaeo constraints including a new discharge parameterization

... the ice discharge into the ocean through outlet glaciers and inspect the role of different observational and palaeo constraints for the choice of an optimal set of model ...polythermal ice-sheet ...

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Probabilistic parameterisation of the surface mass balance–elevation feedback in regional climate model simulations of the Greenland ice sheet

Probabilistic parameterisation of the surface mass balance–elevation feedback in regional climate model simulations of the Greenland ice sheet

... the ice sheet surface ...by ice sheet ...provide ice sheet modellers with the opportunity to fully explore the non-linear ...

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Effect of uncertainty in surface mass balance–elevation feedback on projections of the future sea level contribution of the Greenland ice sheet

Effect of uncertainty in surface mass balance–elevation feedback on projections of the future sea level contribution of the Greenland ice sheet

... with ice sheet models (ISMs), which solve the Stokes equations in complete or ap- proximate ...fixed surface topography, neglecting the important effects of ice sheet surface ...

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Three-dimensional mapping by CryoSat-2 of subglacial lake volume changes

Three-dimensional mapping by CryoSat-2 of subglacial lake volume changes

... upon ice dynamics of variable rates of water delivery into the subglacial system ...and surface elevation over subdecadal time- ...estimate ice sheet mass balance over timescales longer ...

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Hindcasting to measure ice sheet model sensitivity to initial states

Hindcasting to measure ice sheet model sensitivity to initial states

... We have not used all available observations. Additional observations that can be used for validation are, for example, spatially distributed mass loss estimates from GRACE (e.g. Luthcke et al., 2013) and temporal ...

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Bedmap2: improved ice bed, surface and thickness datasets for Antarctica

Bedmap2: improved ice bed, surface and thickness datasets for Antarctica

... to ice-surface minus ice-thickness, and in all areas of float- ing ice shelf, ice-bottom (ice-surface minus ice-thickness) is above the bed-topography, we require ...

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Greenland iceberg melt variability from high-resolution satellite observations

Greenland iceberg melt variability from high-resolution satellite observations

... the elevation of its sur- face lowers in proportion to the iceberg’s volume loss so that the iceberg remains in hydrostatic balance with the water in which it is ...in surface elevation using very ...

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Investigating the sensitivity of numerical model simulations of the modern state of the Greenland ice-sheet and its future response to climate change

Investigating the sensitivity of numerical model simulations of the modern state of the Greenland ice-sheet and its future response to climate change

... equilibrium ice-sheet surface extent of ...the ice-sheet ...in ice surface ...the ice-sheet into previously ice-free ...the ice sheet. ...

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Inferred basal friction and surface mass balance of the Northeast Greenland Ice Stream using data assimilation of ICESat (Ice Cloud and land Elevation Satellite) surface altimetry and ISSM (Ice Sheet (System Model)

Inferred basal friction and surface mass balance of the Northeast Greenland Ice Stream using data assimilation of ICESat (Ice Cloud and land Elevation Satellite) surface altimetry and ISSM (Ice Sheet (System Model)

... assimilating surface al- timetry data from missions such as ICESat into reconstruc- tions of transient ice ...served surface height) with respect to model ...Greenland Ice Stream was pro- ...

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Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet

Surface mass balance downscaling through elevation classes in an Earth system model: application to the Greenland ice sheet

... Figure S2 compares near-surface temperature, turbulent heat fluxes, net longwave radiation, and sea ice extent in EC-1K and EC-6K with ERA-Interim over the entire area in Fig. 5, with the tentative goal of ...

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Recent advances in our understanding of the role of meltwater in the Greenland ice sheet system

Recent advances in our understanding of the role of meltwater in the Greenland ice sheet system

... short-term ice sheet motion is clearly responsive to changing melt rates and hydrology, from a broader perspec- tive, the most important timescale to consider is whether in- creased melt rates make the ...

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Recent ice dynamic and surface mass balance of Union Glacier in the West Antarctic Ice Sheet

Recent ice dynamic and surface mass balance of Union Glacier in the West Antarctic Ice Sheet

... In December 2007, the initial observation network of 21 bamboo stakes was installed in a BIA on Union Glacier (Fig. 2). For each of these stakes GPS measurements were made using Topcon GR3 dual-frequency GPS receivers ...

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Mass balance of the Greenland ice sheet (2003–2008) from ICESat data – the impact of interpolation, sampling and firn density

Mass balance of the Greenland ice sheet (2003–2008) from ICESat data – the impact of interpolation, sampling and firn density

... A procedure of data culling and the application of correc- tions is necessary to reduce some of the systematic errors in the ICESat dataset and to remove problematic measurements (Smith et al., 2005). Saturation of the ...

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An ice sheet model validation framework for the Greenland ice sheet

An ice sheet model validation framework for the Greenland ice sheet

... new ice sheet model validation framework – the Cryospheric Model Comparison Tool (CmCt) – that aims to fill this ...Greenland ice sheet obtained between 2003 and 2013 from the Ice, ...

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A new surface meltwater routing model for use on the  Greenland Ice Sheet surface

A new surface meltwater routing model for use on the Greenland Ice Sheet surface

... digital elevation model (DEM) acquired simultane- ously with the in situ measurements by the WorldView-1 ...the ice surface, and the implications of seasonal routing evo- lutions are ...RWF ...

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Coupling of climate models and ice sheet models by surface mass balance gradients: application to the Greenland Ice Sheet

Coupling of climate models and ice sheet models by surface mass balance gradients: application to the Greenland Ice Sheet

... of ice sheet model ...in ice sheet topography is to frequently feed the new topography from the ice sheet model into the regional climate ...– elevation dependence is ...

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Mapping Ice Sheet Grounding Lines With CryoSat-2

Mapping Ice Sheet Grounding Lines With CryoSat-2

... heterogeneous ice sheet margins, making it particularly well suited for mapping slope in areas of steeply sloping terrain relative to conven- tional pulse limited altimeter missions (Wingham et ...The ...

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A new bed elevation dataset for Greenland

A new bed elevation dataset for Greenland

... bed elevation dataset for Green- land derived from a combination of multiple airborne ice thickness surveys undertaken between the 1970s and ...digital elevation model (DEM) over the entire is- land ...

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ESA ice sheet CCI: derivation of the optimal method for surface elevation change detection of the Greenland ice sheet - round robin results

ESA ice sheet CCI: derivation of the optimal method for surface elevation change detection of the Greenland ice sheet - round robin results

... the surface slope and elevation changes using a multi-variate LSq tech- nique, and residual elevations from the regression exceeding 5 m were iteratively discarded to ensure each estimation value to be ...

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Elevation change measurements of the Greenland Ice Sheet

Elevation change measurements of the Greenland Ice Sheet

... The comparison between the laser altimetry in two succes- sive summer surveys (1996 and 1997), as well as comparisons between laser altimetry and airborne SAR interferometry and ERS satellite tandem interferometry are ...

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