Results 41 to 50 of about 123,208 (303)

A stochastic parameterization of ice sheet surface mass balance for the Stochastic Ice-Sheet and Sea-Level System Model (StISSM v1.0) [PDF]

Geoscientific Model Development
Many scientific and societal questions that draw on ice sheet modeling necessitate sampling a wide range of potential climatic changes and realizations of internal climate variability.
L. Ultee, L. Ultee, A. A. Robel, S. Castruccio   +3 more
doaj   +1 more source

initMIP-Antarctica: an ice sheet model initialization experiment of ISMIP6 [PDF]

The Cryosphere, 2019
Ice sheet numerical modeling is an important tool to estimate the dynamic contribution of the Antarctic ice sheet to sea level rise over the coming centuries.
H. Seroussi, S. Nowicki, E. Simon, A. Abe-Ouchi, T. Albrecht, J. Brondex, S. Cornford, C. Dumas, F. Gillet-Chaulet, H. Goelzer, H. Goelzer, N. R. Golledge, J. M. Gregory, R. Greve, M. J. Hoffman, A. Humbert, A. Humbert, P. Huybrechts, T. Kleiner, E. Larour, G. Leguy, W. H. Lipscomb, D. Lowry, M. Mengel, M. Morlighem, F. Pattyn, A. J. Payne, D. Pollard, S. F. Price, A. Quiquet, T. J. Reerink, T. J. Reerink, R. Reese, C. B. Rodehacke, C. B. Rodehacke, N.-J. Schlegel, A. Shepherd, S. Sun, J. Sutter, J. Sutter, J. Van Breedam, R. S. W. van de Wal, R. S. W. van de Wal, R. Winkelmann, R. Winkelmann, T. Zhang   +45 more
doaj   +1 more source

Performance analysis of high-resolution ice-sheet simulations

Journal of Glaciology, 2023
Numerical glacier and ice-sheet models compute evolving ice geometry and velocity fields using various stress-balance approximations and boundary conditions. At high spatial resolution, with horizontal mesh/grid resolutions of a few kilometers or smaller,
Ed Bueler
doaj   +1 more source

The shallow shelf approximation as a "sliding law" in a thermomechanically coupled ice sheet model

, 2008
The shallow shelf approximation is a better ``sliding law'' for ice sheet modeling than those sliding laws in which basal velocity is a function of driving stress.
Aschwanden, Balay, Blatter, Bueler, Bueler, Clarke, Ed Bueler, Fowler, Fowler, Greve, Greve, Greve, Greve, Hindmarsh, Hindmarsh, Howat, Hulbe, Hutter, Huybrechts, Huybrechts, Jed Brown, Jenssen, Johnson, Joughin, Joughin, Joughin, Joughin, MacAyeal, MacAyeal, Mahaffy, Marshall, Marshall, Marshall, Morland, Morland, Morton, Paterson, Paterson, Pattyn, Pattyn, Payne, Pollard, Raymond, Ritz, Ritz, Saad, Saito, Saito, Saito, Schoof, Schoof, Schoof, Schoof, Shepherd, Tarasov, Truffer, Truffer, Tulaczyk, Tulaczyk, Vaughan, Weis, Wesseling, Zwally, Zwinger   +63 more
core   +1 more source

The key role of topography in altering North Atlantic atmospheric circulation during the last glacial period [PDF]

, 2011
The Last Glacial Maximum (LGM; 21 000 yr before present) was a period of low atmospheric greenhouse gas concentrations, when vast ice sheets covered large parts of North America and Europe.
C. Li, F. S. R. Pausata, J. J. Wettstein, K. H. Nisancioglu, M. Kageyama   +4 more
core   +4 more sources

The impact of the North American glacial topography on the evolution of the Eurasian ice sheet over the last glacial cycle [PDF]

Climate of the Past, 2016
Modeling studies have shown that the continental-scale ice sheets in North America and Eurasia in the last glacial cycle had a large influence on the atmospheric circulation and thus yielded a climate distinctly different from the present.
J. Liakka, M. Löfverström, F. Colleoni
doaj   +1 more source

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

Nature Communications, 2015
AbstractThe 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 sheet behaviour under such warm conditions.
Yamane, Masako, Yokoyama, Yusuke, Abe-Ouchi, Ayako, Obrochta, Stephen, Saito, Fuyuki, Moriwaki, Kiichi, Matsuzaki, Hiroyuki   +6 more
openaire   +2 more sources

The impact of spatially varying ice sheet basal conditions on sliding at glacial time scales

Journal of Glaciology, 2023
Spatially variable basal conditions are thought to govern how ice sheets behave at glacial time scales (>1000 years) and responsible for changes in dynamics between the core and peripheral regions of the Laurentide and Fennoscandian ice sheets.
Evan J. Gowan, Sebastian Hinck, Lu Niu, Caroline Clason, Gerrit Lohmann   +4 more
doaj   +1 more source

Modelling landscape evolution under ice sheets [PDF]

Geomorphology, 2008
We use an ice sheet model (GLIMMER) with an erosion component to examine the evolution of landscapes under ice sheets over long time scales in hypothetical situations. GLIMMER is a fully coupled thermomechanical 3-dimensional ice sheet model with a sliding component.
Jamieson, S.S.R., Hulton, N.R.J., Hagdorn, M.   +2 more
openaire   +4 more sources

Diverse behaviors of marine ice sheets in response to temporal variability of the atmospheric and basal conditions

Journal of Glaciology
The observed retreat of the grounding line of the present-day ice sheets and the simulated grounding-line retreat of ice sheets under changing climate conditions are often interpreted as indications of marine ice-sheet instability (MISI), driven by a ...
Olga Sergienko, Duncan John Wingham
doaj   +1 more source