Results 1 to 10 of about 3,442,527 (297)

Mid Holocene rapid thinning and rethickening of the East Antarctic ice sheet suggested by glacial isostatic adjustment [PDF]

Scientific Reports
Understanding East Antarctic Ice Sheet dynamics during the mid-Holocene remains challenging due to complex climate interactions. Using Global Navigation Satellite System observations and glacial isostatic adjustment modeling, we investigate the ice-sheet
Jun’ichi Okuno, Akihisa Hattori, Koichiro Doi, Yuichi Aoyama, Yoichi Fukuda   +4 more
doaj   +2 more sources

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

The Cryosphere, 2020
Abstract. 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 grounding line.
Gunter R. Leguy, William H. Lipscomb, Xylar S. Asay-Davis   +2 more
openaire   +3 more sources

Greenland ice sheet runoff reduced by meltwater refreezing in bare ice [PDF]

Nature Communications
The contribution of Greenland Ice Sheet meltwater runoff to global sea-level rise is accelerating due to increased melting of its bare-ice ablation zone.
Matthew G. Cooper, Laurence C. Smith, Åsa K. Rennermalm, Jonathan C. Ryan, Lincoln H. Pitcher, Glen E. Liston, Clément Miège, Sarah W. Cooley, Dirk van As   +8 more
doaj   +2 more sources

Millennial-scale migration of the frozen/melted basal boundary, western Greenland ice sheet

Journal of Glaciology, 2022
The geometry and thermal structure of western Greenland ice sheet are known to have undergone relatively substantial change over the Holocene. Evolution of the frozen and melted fractions of the bed associated with the ice-sheet retreat over this time ...
Aidan Stansberry, Joel Harper, Jesse V. Johnson, Toby Meierbachtol   +3 more
doaj   +1 more source

PISM-LakeCC: Implementing an adaptive proglacial lake boundary in an ice sheet model [PDF]

The Cryosphere, 2022
During the Late Pleistocene and Holocene retreat of paleo-ice sheets in North America and Europe, vast proglacial lakes existed along the land terminating margins.
S. Hinck, E. J. Gowan, E. J. Gowan, X. Zhang, X. Zhang, G. Lohmann, G. Lohmann   +6 more
doaj   +1 more source

‘Stable’ and ‘unstable’ are not useful descriptions of marine ice sheets in the Earth's climate system

Journal of Glaciology, 2023
Investigations of the time-dependent behavior of marine ice sheets and their sensitivity to basal conditions require numerical models because existing theoretical analyses focus only on steady-state configurations primarily with a power-law basal shear ...
Olga Sergienko, Marianne Haseloff
doaj   +1 more source

Reply to “Basal buoyancy and fast-moving glaciers: in defense of analytic force balance” by C. J. van der Veen (2016) [PDF]

The Cryosphere, 2017
Two approaches to ice-sheet modeling are available. Analytical modeling is the traditional approach (Van der Veen, 2016). It solves the force (momentum), mass, and energy balances to obtain three-dimensional solutions over time, beginning with the ...
T. J. Hughes, T. J. Hughes
doaj   +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   +7 more sources

The influence of inter-annual temperature variability on the Greenland Ice Sheet volume

Annals of Glaciology, 2023
The Greenland Ice Sheet has become an increasingly larger contributor to sea level rise in the past two decades and is projected to continue to lose mass.
Mikkel Lauritzen, Guðfinna Aðalgeirsdóttir, Nicholas Rathmann, Aslak Grinsted, Brice Noël, Christine S. Hvidberg   +5 more
doaj   +1 more source

Experimental protocol for sea level projections from ISMIP6 stand-alone ice sheet models [PDF]

The Cryosphere, 2020
Projection of the contribution of ice sheets to sea level change as part of the Coupled Model Intercomparison Project Phase 6 (CMIP6) takes the form of simulations from coupled ice sheet–climate models and stand-alone ice sheet models, overseen by the ...
S. Nowicki, H. Goelzer, H. Goelzer, H. Seroussi, A. J. Payne, W. H. Lipscomb, A. Abe-Ouchi, C. Agosta, P. Alexander, P. Alexander, X. S. Asay-Davis, A. Barthel, T. J. Bracegirdle, R. Cullather, D. Felikson, X. Fettweis, J. M. Gregory, J. M. Gregory, J. M. Gregory, T. Hattermann, T. Hattermann, N. C. Jourdain, P. Kuipers Munneke, E. Larour, C. M. Little, M. Morlighem, I. Nias, I. Nias, A. Shepherd, E. Simon, D. Slater, R. S. Smith, R. S. Smith, F. Straneo, L. D. Trusel, M. R. van den Broeke, R. van de Wal, R. van de Wal   +37 more
doaj   +1 more source