Results 31 to 40 of about 2,560,774 (293)

Glacial cycles and ice-sheet modelling [PDF]

Climatic Change, 1982
An attempt is made to simulate the Pleistocene glacial cycles with a numerical model of the Northern Hemisphere ice sheets. This model treats the vertically-integrated ice flow along a meridian, including computation of bedrock adjustment and temperature distribution in the ice. Basal melt water is traced and controls ice-mass discharge.
openaire   +2 more sources

The sensitivity of Northern Hemisphere ice sheets to atmospheric forcing during the last glacial cycle using PMIP3 models

Journal of Glaciology, 2019
The evolution of Northern Hemisphere ice sheets through the last glacial cycle is simulated with the glacial index method by using the climate forcing from one General Circulation Model, COSMOS.
LU NIU, GERRIT LOHMANN, SEBASTIAN HINCK, EVAN J. GOWAN, UTA KREBS-KANZOW   +4 more
doaj   +1 more source

High climate model dependency of Pliocene Antarctic ice-sheet predictions

Nature Communications, 2018
Ice sheet models forced by climate model output indicate ice-sheet retreat during the Pliocene, yet concerns remain regarding potential model bias. Here, the authors present results from the Pliocene Ice-sheet Modelling Intercomparison Project, and show ...
Aisling M. Dolan, Bas de Boer, Jorge Bernales, Daniel J. Hill, Alan M. Haywood   +4 more
doaj   +1 more source

Airborne radar evidence for tributary flow switching in Institute Ice Stream, West Antarctica: implications for ice sheet configuration and dynamics [PDF]

, 2015
Despite the importance of ice streaming to the evaluation of West Antarctic Ice Sheet (WAIS) stability we know little about mid- to long-term dynamic changes within the Institute Ice Stream (IIS) catchment.
Martin J. Siegert, Hugh F. J. Corr, Corr, Hugh, Bingham, RG, Woodward, John, Ross, Neil, Ross, N, Dunning, SA, Corr, Hugh F.J., Winter, K, Siegert, MJ, Robert G. Bingham, Winter, Kate, Dunning, Stuart, John Woodward, Neil Ross, Siegert, Martin, Corr, HFJ, Kate Winter, Dunning, Stuart A., Siegert, Martin J., Stuart A. Dunning, Bingham, Robert G., Woodward, J   +23 more
core   +1 more source

The Greenland-Ice-Sheet evolution over the last 24 000 years: insights from model simulations evaluated against ice-extent markers [PDF]

The Cryosphere
Continental ice sheets retain a long-term memory stored in their geometry and thermal properties. In Greenland, this creates a disequilibrium with the present climate, as the ice sheet is still adjusting to past changes that occurred over millennial ...
T. P. M. Leger, T. P. M. Leger, J. C. Ely, C. D. Clark, S. L. Bradley, R. E. Archer, J. Zhu   +6 more
doaj   +1 more source

An ice-sheet scale comparison of eskers with modelled subglacial drainage routes [PDF]

, 2015
Eskers record the signature of channelised meltwater drainage during deglaciation providing vital information on the nature and evolution of subglacial drainage.
Stokes, C.R., C.D. Clark (630927), Storrar, RD, Clark, CD, Tarasov, L, Stokes, Chris R., Hillier, J.K., Clark, C.D., Livingstone, SJ, Clark, Chris D., C.R. Stokes (630946), Tarasov, L., Livingstone, S.J., Stephen J. Livingstone (3691018), Tarasov, Lev, Livingstone, Stephen J., John Hillier (1254873), Storrar, Robert D., R. Storrar (630947), Hillier, JK, Hillier, John K., L. Tarasov (7191965), Storrar, R.D., Stokes, CR   +23 more
core   +1 more source

Tracer transport in an isochronal ice-sheet model

Journal of Glaciology, 2017
The full history of ice sheet and climate interactions is recorded in the vertical profiles of geochemical tracers in polar ice sheets. Numerical simulations of these archives promise great advances both in the interpretation of these reconstructions and
ANDREAS BORN
doaj   +1 more source

Modelling dynamic ice-sheet boundaries and grounding line migration using the level set method

Journal of Glaciology, 2020
Computing predictions of future sea level that include well-defined uncertainty bounds requires models that are capable of robustly simulating the evolution of ice sheets and glaciers.
M. Alamgir Hossain, Sam Pimentel, John M. Stockie   +2 more
doaj   +1 more source

The speedup of Pine Island Ice Shelf between 2017 and 2020: revaluating the importance of ice damage

Journal of Glaciology, 2023
From 2017 to 2020, three significant calving events took place on Pine Island Glacier, West Antarctica. Ice-shelf velocities changed over this period and the calving events have been suggested as possible drivers.
Sainan Sun, G. Hilmar Gudmundsson
doaj   +1 more source

Performance portable ice-sheet modeling with MALI

The International Journal of High Performance Computing Applications, 2023
High-resolution simulations of polar ice sheets play a crucial role in the ongoing effort to develop more accurate and reliable Earth system models for probabilistic sea-level projections. These simulations often require a massive amount of memory and computation from large supercomputing clusters to provide sufficient accuracy and resolution ...
Jerry Watkins, Max Carlson, Kyle Shan, Irina Tezaur, Mauro Perego, Luca Bertagna, Carolyn Kao, Matthew J. Hoffman 0004, Stephen F. Price   +8 more
openaire   +4 more sources