Extended enthalpy formulations in the Ice-sheet and Sea-level System Model (ISSM) version 4.17: discontinuous conductivity and anisotropic streamline upwind Petrov–Galerkin (SUPG) method [PDF]
Geoscientific Model Development, 2020 The thermal state of an ice sheet is an important control on its past and future evolution. Some parts of the ice sheet may be polythermal, leading to discontinuous properties at the cold–temperate transition surface (CTS).
M. Rückamp +5 more
doaj +1 more source
An assessment of key model parametric uncertainties in projections of Greenland Ice Sheet behavior [PDF]
, 2012 Lack of knowledge about the values of ice sheet model input parameters introduces substantial uncertainty into projections of Greenland Ice Sheet contributions to future sea level rise.
Stone, Emma J. +17 more
core +2 more sources
A rapidly converging initialisation method to simulate the present-day Greenland ice sheet using the GRISLI ice sheet model (version 1.3) [PDF]
Geoscientific Model Development, 2019 Providing reliable projections of the ice sheet contribution to future sea-level rise has become one of the main challenges of the ice sheet modelling community.
S. Le clec'h +7 more
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A steady-state model reconstruction of the patagonian ice sheet during the last glacial maximum
Quaternary Science Advances, 2023 During the Last Glacial Maximum (LGM), the Patagonian Ice Sheet (PIS) was the largest Quaternary ice mass in the Southern Hemisphere outside of Antarctica. Although the margins of the LGM ice sheet are now well established through end-moraine mapping and
Ingo W. Wolff +4 more
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Investigating the internal structure of the Antarctic ice sheet: the utility of isochrones for spatiotemporal ice-sheet model calibration [PDF]
The Cryosphere, 2021 Ice-sheet models are a powerful tool to project the evolution of the Greenland and Antarctic ice sheets and thus their future contribution to global sea-level changes. Testing the ability of ice-sheet models to reproduce the ongoing and past evolution of
J. Sutter +3 more
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The effect of buttressing on grounding line dynamics
Journal of Glaciology, 2018 Determining the position and stability of the grounding line of a marine ice sheet is a major challenge for ice-sheet models. Here, we investigate the role of lateral shear and ice-shelf buttressing in grounding line dynamics by extending an existing ...
MARIANNE HASELOFF, OLGA V. SERGIENKO
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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 [PDF]
The Cryosphere, 2010 Ice thickness and bedrock topography are essential boundary conditions for numerical modelling of the evolution of the Greenland ice-sheet (GrIS). The datasets currently in use by the majority of GrIS modelling studies are over two decades old and based ...
E. J. Stone +3 more
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Deglacial climate changes as forced by different ice sheet reconstructions [PDF]
Climate of the Past, 2023 During the last deglaciation, the climate evolves from a cold state at the Last Glacial Maximum (LGM) at 21 ka (thousand years ago) with large ice sheets to the warm Holocene at ∼9 ka with reduced ice sheets.
N. Bouttes +8 more
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A Thermohydrodynamic Model of an Ice Sheet [PDF]
Journal of Glaciology, 1980 Abstract The purpose of this paper is to consider an ice-sheet model based on joint solution to the dynamic equations and equations of heat conductivity in which the surface relief is one of the unknown functions. The proposed model is applicable to calculations of the Antarctic ice sheet. Results of a numerical experiment for present
M. Ya. Verbitsky, D. V. Chalikov
openaire +1 more source
Mid-Holocene thinning of David Glacier, Antarctica: chronology and controls [PDF]
The Cryosphere, 2021 Quantitative satellite observations only provide an assessment of ice sheet mass loss over the last four decades. To assess long-term drivers of ice sheet change, geological records are needed. Here we present the first millennial-scale reconstruction of
J. Stutz +23 more
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