Recent Progress in Greenland Ice Sheet Modelling [PDF]
Current Climate Change Reports, 2017 Purpose of Review: This paper reviews the recent literature on numerical modelling of the dynamics of the Greenland ice sheet with the goal of providing an overview of advancements and to highlight important directions of future research.
Hélène Seroussi +2 more
exaly +4 more sources
Modelling the Antarctic Ice Sheet across the mid-Pleistocene transition – implications for Oldest Ice [PDF]
The Cryosphere, 2019 The international endeavour to retrieve a continuous ice core, which spans the middle Pleistocene climate transition ca. 1.2–0.9 Myr ago, encompasses a multitude of field and model-based pre-site surveys. We expand on the current efforts to locate
J. Sutter +9 more
doaj +5 more sources
An improved Antarctic dataset for high resolution numerical ice sheet models (ALBMAP v1) [PDF]
Earth System Science Data, 2010 The dataset described in this paper (ALBMAP) has been created for the purposes of high-resolution numerical ice sheet modelling of the Antarctic Ice Sheet. It brings together data on the ice sheet configuration (e.g.
A. M. Le Brocq, A. J. Payne, A. Vieli
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ICESHEET 1.0: a program to produce paleo-ice sheet reconstructions with minimal assumptions [PDF]
Geoscientific Model Development, 2016 We describe a program that produces paleo-ice sheet reconstructions using an assumption of steady-state, perfectly plastic ice flow behaviour. It incorporates three input parameters: ice margin, basal shear stress and basal topography.
E. J. Gowan +6 more
doaj +1 more source
Data assimilation and prognostic whole ice sheet modelling with the variationally derived, higher order, open source, and fully parallel ice sheet model VarGlaS [PDF]
The Cryosphere, 2013 We introduce a novel, higher order, finite element ice sheet model called VarGlaS (Variational Glacier Simulator), which is built on the finite element framework FEniCS.
D. J. Brinkerhoff, J. V. Johnson
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Geology datasets in North America, Greenland and surrounding areas for use with ice sheet models [PDF]
Earth System Science Data, 2019 The ice–substrate interface is an important boundary condition for ice sheet modelling. The substrate affects the ice sheet by allowing sliding through sediment deformation and accommodating the storage and drainage of subglacial water.
E. J. Gowan +3 more
doaj +1 more source
Ice-sheet configuration in the CMIP5/PMIP3 Last Glacial Maximum experiments [PDF]
Geoscientific Model Development, 2015 We describe the creation of a data set describing changes related to the presence of ice sheets, including ice-sheet extent and height, ice-shelf extent, and the distribution and elevation of ice-free land at the Last Glacial Maximum (LGM), which were
A. Abe-Ouchi +10 more
doaj +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 +2 more sources
Effect of an orientation-dependent non-linear grain fluidity on bulk directional enhancement factors
Journal of Glaciology, 2021 Bulk directional enhancement factors are determined for axisymmetric (girdle and single-maximum) orientation fabrics using a transversely isotropic grain rheology with an orientation-dependent non-linear grain fluidity.
Nicholas M. Rathmann +4 more
doaj +1 more source
Bed topography and marine ice-sheet stability
Journal of Glaciology, 2022 This paper examines the effect of basal topography and strength on the grounding-line position, flux and stability of rapidly-sliding ice streams.
Olga V. Sergienko, Duncan J. Wingham
doaj +1 more source