Results 11 to 20 of about 1,626,068 (395)

Marine ice sheet experiments with the Community Ice Sheet Model [PDF]

The Cryosphere, 2021
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. R. Leguy, W. H. Lipscomb, X. S. Asay-Davis   +2 more
doaj   +3 more sources

Hysteresis of the Antarctic Ice Sheet With a Coupled Climate‐Ice‐Sheet Model

Geophysical Research Letters
The stability of the Antarctic ice sheet under different fixed CO2 levels and orbital configurations is explored using a coupled climate‐ice sheet model, starting from either a pre‐industrial ice sheet or an ice‐free, isostatically rebounded geometry ...
G. Leloup, A. Quiquet, D. M. Roche, C. Dumas, D. Paillard   +4 more
doaj   +5 more sources

The Last Scottish Ice Sheet [PDF]

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 2019
The last Scottish Ice Sheet (SIS) expanded from a pre-existing ice cap after ∼35 ka. Highland ice dominated, with subsequent build-up of a Southern Uplands ice mass.
C. Ballantyne, D. Small
semanticscholar   +6 more sources

Active subglacial lakes and channelized water flow beneath the Kamb Ice Stream [PDF]

The Cryosphere, 2016
We identify two previously unknown subglacial lakes beneath the stagnated trunk of the Kamb Ice Stream (KIS). Rapid fill-drain hydrologic events over several months are inferred from surface height changes measured by CryoSat-2 altimetry and indicate ...
B.-H. Kim, C.-K. Lee, K.-W. Seo, W. S. Lee, T. Scambos   +4 more
doaj   +1 more source

A new global ice sheet reconstruction for the past 80 000 years

Nature Communications, 2021
The evolution of past global ice sheets is highly uncertain. One example is the missing ice problem during the Last Glacial Maximum (LGM, 26 000-19 000 years before present) – an apparent 8-28 m discrepancy between far-field sea level indicators and ...
E. Gowan, Xu Zhang, Sara Khosravi, A. Rovere, P. Stocchi, A. Hughes, R. Gyllencreutz, J. Mangerud, J. Svendsen, G. Lohmann   +9 more
semanticscholar   +1 more source

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, Matthew J. Hoffman, Jennifer A. Bonin, Ian M. Howat, Thomas Neumann, Jack Saba, Irina Tezaur, Jeffrey Guerber, Don P. Chambers, Katherine J. Evans, Joseph H. Kennedy, Jan Lenaerts, William H. Lipscomb, Mauro Perego, Andrew G. Salinger, Raymond S. Tuminaro, Michiel R. van den Broeke, Sophie M. J. Nowicki   +17 more
openaire   +8 more sources

Pervasive ice sheet mass loss reflects competing ocean and atmosphere processes

Science, 2020
Taking stock of our losses Earth's ice sheets are melting and sea levels are rising, so it behooves us to understand better which climate processes are responsible for how much of the mass loss. Smith et al.
Ben E. Smith, H. Fricker, A. Gardner, B. Medley, J. Nilsson, F. Paolo, N. Holschuh, N. Holschuh, S. Adusumilli, K. Brunt, B. Csathó, K. Harbeck, T. Markus, T. Neumann, M. Siegfried, H. Zwally, H. Zwally   +16 more
semanticscholar   +1 more source

ISMIP6 Antarctica: a multi-model ensemble of the Antarctic ice sheet evolution over the 21st century

The Cryosphere, 2020
. Ice flow models of the Antarctic ice sheet are commonly used to simulate its future evolution in response to different climate scenarios and assess the mass loss that would contribute to future sea level rise.
H. Seroussi, S. Nowicki, A. Payne, H. Goelzer, W. Lipscomb, A. Abe‐Ouchi, Cécile Agosta, T. Albrecht, X. Asay-Davis, A. Barthel, R. Calov, R. Cullather, C. Dumas, B. Galton-Fenzi, R. Gladstone, N. Golledge, J. Gregory, R. Greve, T. Hattermann, M. Hoffman, A. Humbert, P. Huybrechts, N. Jourdain, T. Kleiner, E. Larour, G. Leguy, D. Lowry, C. M. Little, Mathieu Morlighem, F. Pattyn, T. Pelle, S. Price, A. Quiquet, R. Reese, N. Schlegel, A. Shepherd, E. Simon, Robin S. Smith, F. Straneo, Sainan Sun, L. Trusel, Jonas Van Breedam, R. V. D. van de Wal, R. Winkelmann, Chen Zhao, Tong Zhang, T. Zwinger   +46 more
semanticscholar   +1 more source

Drill-site selection for cosmogenic-nuclide exposure dating of the bed of the Greenland Ice Sheet [PDF]

The Cryosphere, 2022
Direct observations of the size of the Greenland Ice Sheet during Quaternary interglaciations are sparse yet valuable for testing numerical models of ice-sheet history and sea level contribution. Recent measurements of cosmogenic nuclides in bedrock from
J. P. Briner, C. K. Walcott, J. M. Schaefer, N. E. Young, J. A. MacGregor, K. Poinar, B. A. Keisling, S. Anandakrishnan, M. R. Albert, T. Kuhl, G. Boeckmann   +10 more
doaj   +1 more source

Ice dynamics will remain a primary driver of Greenland ice sheet mass loss over the next century

Communications Earth & Environment, 2021
The mass loss of the Greenland Ice Sheet is nearly equally partitioned between a decrease in surface mass balance from enhanced surface melt and an increase in ice dynamics from the acceleration and retreat of its marine-terminating glaciers.
Youngmin Choi, Mathieu Morlighem, E. Rignot, M. Wood   +3 more
semanticscholar   +1 more source