Results 1 to 10 of about 306,492 (342)

An ice sheet model validation framework for the Greenland ice sheet [PDF]

Geoscientific Model Development, 2017
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 ...
S. F. Price, M. J. Hoffman, J. A. Bonin, I. M. Howat, T. Neumann, J. Saba, I. Tezaur, J. Guerber, D. P. Chambers, K. J. Evans, J. H. Kennedy, J. Lenaerts, W. H. Lipscomb, M. Perego, A. G. Salinger, R. S. Tuminaro, M. R. van den Broeke, S. M. J. Nowicki   +17 more
doaj   +10 more sources

Design and results of the ice sheet model initialisation initMIP-Greenland: an ISMIP6 intercomparison [PDF]

The Cryosphere, 2018
Earlier large-scale Greenland ice sheet sea-level projections (e.g. those run during the ice2sea and SeaRISE initiatives) have shown that ice sheet initial conditions have a large effect on the projections and give rise to important uncertainties. The
H. Goelzer, H. Goelzer, S. Nowicki, T. Edwards, T. Edwards, M. Beckley, A. Abe-Ouchi, A. Aschwanden, R. Calov, O. Gagliardini, F. Gillet-Chaulet, N. R. Golledge, J. Gregory, J. Gregory, R. Greve, A. Humbert, A. Humbert, P. Huybrechts, J. H. Kennedy, J. H. Kennedy, E. Larour, W. H. Lipscomb, W. H. Lipscomb, S. Le clec'h, V. Lee, M. Morlighem, F. Pattyn, A. J. Payne, C. Rodehacke, C. Rodehacke, M. Rückamp, F. Saito, N. Schlegel, H. Seroussi, A. Shepherd, S. Sun, R. van de Wal, F. A. Ziemen   +37 more
doaj   +3 more sources

Ice shelf fracture parameterization in an ice sheet model [PDF]

The Cryosphere, 2017
Floating ice shelves exert a stabilizing force onto the inland ice sheet. However, this buttressing effect is diminished by the fracture process, which on large scales effectively softens the ice, accelerating its flow, increasing calving, and ...
S. Sun, S. Sun, S. L. Cornford, J. C. Moore, J. C. Moore, R. Gladstone, L. Zhao   +6 more
doaj   +4 more sources

Ice Sheet Model Intercomparison Project (ISMIP6) contribution to CMIP6 [PDF]

Geoscientific Model Development, 2016
Reducing the uncertainty in the past, present, and future contribution of ice sheets to sea-level change requires a coordinated effort between the climate and glaciology communities.
S. M. J. Nowicki, A. Payne, E. Larour, H. Seroussi, H. Goelzer, W. Lipscomb, J. Gregory, A. Abe-Ouchi, A. Shepherd   +8 more
doaj   +3 more sources

Exposure age and ice-sheet model constraints on Pliocene East Antarctic ice sheet dynamics. [PDF]

Nat Commun, 2015
The Late Pliocene epoch is a potential analogue for future climate in a warming world. Here we reconstruct Plio-Pleistocene East Antarctic Ice Sheet (EAIS) variability using cosmogenic nuclide exposure ages and model simulations to better understand ice ...
Yamane M, Yokoyama Y, Abe-Ouchi A, Obrochta S, Saito F, Moriwaki K, Matsuzaki H.   +6 more
europepmc   +5 more sources

Future sea-level projections with a coupled atmosphere-ocean-ice-sheet model. [PDF]

Nat Commun, 2023
Most global sea level projections ignore the active role of ice-sheet-climate coupling. Including this effect, a new modeling system simulates irreversible Antarctic ice-sheet loss and accelerating sea level rise for global mean temperatures >1.8oC ...
Park JY, Schloesser F, Timmermann A, Choudhury D, Lee JY, Nellikkattil AB.   +5 more
europepmc   +2 more sources

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, H. Fischer, O. Eisen, O. Eisen   +3 more
doaj   +2 more sources

Simulation of a fully coupled 3D glacial isostatic adjustment – ice sheet model for the Antarctic ice sheet over a glacial cycle [PDF]

Geoscientific Model Development, 2023
Glacial isostatic adjustment (GIA) has a stabilizing effect on the evolution of the Antarctic ice sheet by reducing the grounding line migration following ice melt. The timescale and strength of this feedback depends on the spatially varying viscosity of
C. J. van Calcar, C. J. van Calcar, R. S. W. van de Wal, R. S. W. van de Wal, B. Blank, B. de Boer, W. van der Wal, W. van der Wal   +7 more
doaj   +2 more sources

Description and Demonstration of the Coupled Community Earth System Model v2 – Community Ice Sheet Model v2 (CESM2‐CISM2) [PDF]

Journal of Advances in Modeling Earth Systems, 2021
Earth system/ice‐sheet coupling is an area of recent, major Earth System Model (ESM) development. This work occurs at the intersection of glaciology and climate science and is motivated by a need for robust projections of sea‐level rise.
Laura Muntjewerf, William J. Sacks, Marcus Lofverstrom, Jeremy Fyke, William H. Lipscomb, Carolina Ernani da Silva, Miren Vizcaino, Katherine Thayer‐Calder, Jan T. M. Lenaerts, Raymond Sellevold   +9 more
doaj   +2 more sources

Marine ice-sheet experiments with the Community Ice Sheet Model using the MISMIP+ experimental framework.  [PDF]

The Cryosphere, 2020
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 ...
G. Leguy, W. Lipscomb, X. Asay-Davis
semanticscholar   +4 more sources