Results 21 to 30 of about 2,666,636 (245)

A rapidly converging initialisation method to simulate the present-day Greenland ice sheet using the GRISLI ice sheet model (version 1.3) [PDF]

Geoscientific Model Development, 2019
Providing reliable projections of the ice sheet contribution to future sea-level rise has become one of the main challenges of the ice sheet modelling community.
S. Le clec'h, S. Le clec'h, A. Quiquet, A. Quiquet, S. Charbit, C. Dumas, M. Kageyama, C. Ritz   +7 more
doaj   +1 more source

A steady-state model reconstruction of the patagonian ice sheet during the last glacial maximum

Quaternary Science Advances, 2023
During the Last Glacial Maximum (LGM), the Patagonian Ice Sheet (PIS) was the largest Quaternary ice mass in the Southern Hemisphere outside of Antarctica. Although the margins of the LGM ice sheet are now well established through end-moraine mapping and
Ingo W. Wolff, Neil F. Glasser, Stephan Harrison, Joanne Laura Wood, Alun Hubbard   +4 more
doaj   +1 more source

An assessment of key model parametric uncertainties in projections of Greenland Ice Sheet behavior [PDF]

, 2012
Lack of knowledge about the values of ice sheet model input parameters introduces substantial uncertainty into projections of Greenland Ice Sheet contributions to future sea level rise.
Stone, Emma J., N. Kirchner, K. Keller, Keller, K., Greve, Ralf, Applegate, P. J., Greve, R., R. Greve, Keller, Klaus, Kirchner, N., Applegate, Patrick J.,, Applegate, Patrick J., Kirchner, Nina, Stone, EJ, Kirchner, Nina,, E. J. Stone, Stone, E. J., P. J. Applegate   +17 more
core   +2 more sources

Investigating the sensitivity of numerical model simulations of the modern state of the Greenland ice-sheet and its future response to climate change [PDF]

The Cryosphere, 2010
Ice thickness and bedrock topography are essential boundary conditions for numerical modelling of the evolution of the Greenland ice-sheet (GrIS). The datasets currently in use by the majority of GrIS modelling studies are over two decades old and based ...
E. J. Stone, D. J. Lunt, I. C. Rutt, E. Hanna   +3 more
doaj   +1 more source

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

Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years [PDF]

, 2016
Past fluctuations of the West Antarctic Ice Sheet (WAIS) are of fundamental interest because of the possibility of WAIS collapse in the future and a consequent rise in global sea level.
Sugden, David, Stuart, Finlay, Freeman, Stewart, Freeman, Stewart P.H.T., Woodward, John, Marrero, Shasta, Steig, Eric J., Stuart, Finlay M., Westoby, M. J., Westoby, Matt, Sugden, David E., Marrero, Shasta M., Freeman, Stewart P. H. T., Dunning, Stuart, Winter, Kate, Hein, Andrew, Westoby, Matthew J., Hein, Andrew S., Dunning, Stuart A., Steig, Eric, Steig, Eric.J., Hein, Andrew; id_orcid   +21 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

Microbial nitrogen cycling on the Greenland Ice Sheet [PDF]

, 2012
Nitrogen inputs and microbial nitrogen cycling were investigated along a 79 km transect into the Greenland Ice Sheet (GrIS) during the main ablation season in summer 2010. The depletion of dissolved nitrate and production of ammonium (relative to icemelt)
J. Telling, C. Bellas, Wadham, J.L., Hodson, A, I. Nias, Wadham, Jemma L, Tranter, Martyn, J. Cook, M. Stibal, Telling, J., Bellas, Christopher M, A. Hodson, A. M. Anesio, Hodson, A., Cook, J, Sole, A, G. Lis, Nias, Isabel, Tranter, M., Lis, G., Stibal, M, P. Nienow, Anesio, A.M., Stibal, Marek, Nienow, P, Anesio, A. M., Cook, J., Tranter, M, Anesio, Alexandre M, Stibal, M., Telling, J, Bellas, C, Bellas, C., Wadham, JL, Telling, Jon P, Anesio, AM, M. Tranter, Lis, G, Sole, A., Cook, Joe, J. L. Wadham, A. Sole, Wadham, J. L., Nias, I, Nias, I., Nienow, P.   +45 more
core   +2 more sources

The effect of buttressing on grounding line dynamics

Journal of Glaciology, 2018
Determining the position and stability of the grounding line of a marine ice sheet is a major challenge for ice-sheet models. Here, we investigate the role of lateral shear and ice-shelf buttressing in grounding line dynamics by extending an existing ...
MARIANNE HASELOFF, OLGA V. SERGIENKO
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