The paradigm shift in Antarctic ice sheet modelling. [PDF]
Nat Commun, 2018 The Antarctic ice sheet is one of the largest potential contributors to future sea level rise. Predicting its future behaviour using physically-based ice sheet models has been a bottleneck for the past decades, but major advances are ongoing.
Pattyn F.
europepmc +6 more sources
Marine ice-sheet experiments with the Community Ice Sheet Model [PDF]
The Cryosphere, 2020 Abstract. Ice sheet models differ in their numerical treatment of dynamical processes. Simulations of marine-based ice are sensitive to the choice of Stokes flow approximation and basal friction law, and to the treatment of stresses and melt rates near the grounding line.
Gunter R. Leguy +2 more
openaire +3 more sources
An ice sheet model validation framework for the Greenland ice sheet [PDF]
Geoscientific Model Development, 2016 Abstract. We propose a new ice sheet model validation framework – the Cryospheric Model Comparison Tool (CmCt) – that takes advantage of ice sheet altimetry and gravimetry observations collected over the past several decades and is applied here to modeling of the Greenland ice sheet.
Stephen F. Price +17 more
openaire +7 more sources
Annals of Glaciology, 1984 This paper presents a review of the ice-sheet mechanics behind the modeling work of Pleistocene ice sheets driven by astronomical (Milankovitch) forcing.
J. Weertman, G. E. Birchfield
openaire +1 more source
Cosmogenic-nuclide data from Antarctic nunataks can constrain past ice sheet instabilities [PDF]
The Cryosphere, 2023 We apply geologic evidence from ice-free areas in Antarctica to evaluate model simulations of ice sheet response to warm climates. This is important because such simulations are used to predict ice sheet behaviour in future warm climates, but geologic ...
A. R. W. Halberstadt +3 more
doaj +1 more source
ATAT 1.1, the Automated Timing Accordance Tool for comparing ice-sheet model output with geochronological data [PDF]
Geoscientific Model Development, 2019 Earth's extant ice sheets are of great societal importance given their ongoing and potential future contributions to sea-level rise. Numerical models of ice sheets are designed to simulate ice-sheet behaviour in response to climate changes but to be ...
J. C. Ely +3 more
doaj +1 more source
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
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
doaj +1 more source
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
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
doaj +1 more source