Results 51 to 60 of about 117,586 (338)

A persistent and dynamic East Greenland Ice Sheet over the past 7.5 million years [PDF]

, 2016
Climate models show that ice-sheet melt will dominate sea-level rise over the coming centuries, but our understanding of ice-sheet variations before the last interglacial 125,000 years ago remains fragmentary.
Bierman, Paul R., Corbett, Lee B., Rood, Dylan H., Shakun, Jeremy D., Zimmerman, Susan R.   +4 more
core   +2 more sources

GrSMBMIP: intercomparison of the modelled 1980–2012 surface mass balance over the Greenland Ice Sheet

The Cryosphere, 2020
. Observations and models agree that the Greenland Ice Sheet (GrIS) surface mass balance (SMB) has decreased since the end of the 1990s due to an increase in meltwater runoff and that this trend will accelerate in the future. However, large uncertainties
X. Fettweis, Stefan Hofer, U. Krebs-Kanzow, C. Amory, T. Aoki, Constantijn J. Berends, A. Born, J. Box, A. Delhasse, K. Fujita, P. Gierz, H. Goelzer, Edward Hanna, A. Hashimoto, P. Huybrechts, M. Kapsch, M. King, C. Kittel, C. Lang, P. Langen, J. Lenaerts, G. Liston, Gerrit Lohmann, S. Mernild, U. Mikolajewicz, K. Modali, R. Mottram, M. Niwano, B. Noël, J. Ryan, A. Smith, J. Streffing, M. Tedesco, W. J. Berg, M. Broeke, R. Wal, L. Kampenhout, D. Wilton, B. Wouters, F. Ziemen, Tobias Zolles   +40 more
semanticscholar   +1 more source

Large subglacial source of mercury from the southwestern margin of the Greenland Ice Sheet

Nature Geoscience, 2021
The Greenland Ice Sheet is currently not accounted for in Arctic mercury budgets, despite large and increasing annual runoff to the ocean and the socio-economic concerns of high mercury levels in Arctic organisms.
J. Hawkings, B. Linhoff, J. Wadham, M. Stibal, C. Lamborg, G. Carling, G. Lamarche-Gagnon, T. Kohler, R. Ward, K. Hendry, L. Falteisek, A. Kellerman, Karen A. Cameron, J. Hatton, S. Tingey, Amy D. Holt, P. Vinšová, Stefan Hofer, Marie Bulínová, T. Větrovský, L. Meire, R. Spencer   +21 more
semanticscholar   +1 more source

Constraining GRACE-derived cryosphere-attributed signal to irregularly shaped ice-covered areas [PDF]

The Cryosphere, 2013
We use a Monte Carlo approach to invert a spherical harmonic representation of cryosphere-attributed mass change in order to infer the most likely underlying mass changes within irregularly shaped ice-covered areas at nominal 26 km resolution.
W. Colgan, S. Luthcke, W. Abdalati, M. Citterio   +3 more
doaj   +1 more source

Review article: Earth's ice imbalance [PDF]

The Cryosphere, 2021
We combine satellite observations and numerical models to show that Earth lost 28 trillion tonnes of ice between 1994 and 2017. Arctic sea ice (7.6 trillion tonnes), Antarctic ice shelves (6.5 trillion tonnes), mountain glaciers (6.1 trillion tonnes ...
T. Slater, I. R. Lawrence, I. N. Otosaka, A. Shepherd, N. Gourmelen, L. Jakob, P. Tepes, L. Gilbert, P. Nienow   +8 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.
Applegate, P. J., Greve, R., Keller, K., Kirchner, N., Stone, EJ   +4 more
core   +2 more sources

Subglacial roughness of the Greenland Ice Sheet: relationship with contemporary ice velocity and geology

The Cryosphere, 2019
. The subglacial environment of the Greenland Ice Sheet (GrIS) is poorly constrained both in its bulk properties, for example geology, the presence of sediment, and the presence of water, and interfacial conditions, such as roughness and bed rheology ...
M. Cooper, Thomas M. Jordan, D. M. Schroeder, M. J. Siegert, Christopher N. Williams, J. Bamber   +5 more
semanticscholar   +1 more source

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

Glacier algae accelerate melt rates on the south-western Greenland Ice Sheet

The Cryosphere, 2020
. Melting of the Greenland Ice Sheet (GrIS) is the largest single contributor to eustatic sea level and is amplified by the growth of pigmented algae on the ice surface, which increases solar radiation absorption.
J. Cook, A. Tedstone, C. Williamson, J. McCutcheon, A. Hodson, A. Dayal, M. Skiles, Stefan Hofer, Dr Robert Bryant, O. McAree, A. McGonigle, J. Ryan, A. Anesio, T. Irvine‐Fynn, A. Hubbard, Edward Hanna, M. Flanner, S. Mayanna, L. Benning, D. As, M. Yallop, J. McQuaid, T. Gribbin, M. Tranter   +23 more
semanticscholar   +1 more source

A temperate former West Antarctic ice sheet suggested by an extensive zone of bed channels [PDF]

, 2014
Several recent studies predict that the West Antarctic Ice Sheet will become increasingly unstable under warmer conditions. Insights on such change can be assisted through investigations of the subglacial landscape, which contains imprints of former ice ...
Anne M. Le Brocq, Bamber, Bartholomew, Bartholomew, Cook, Cowton, David M. Rippin, DeConto, Dowsett, Fausto Ferraccioli, Fowler, Fretwell, Haran, Hugh F.J. Corr, Jordan, Joughin, Kathryn C. Rose, Le Brocq, Lewis, Martin J. Siegert, Miller, Mote, Naish, Neil Ross, Nitsche, Pritchard, Raymo, Rignot, Robert G. Bingham, Ross, Ross, Schoof, Shepherd, Smith, Sugden, Tom A. Jordan, Trusel, Wingham, Wright, Wright, Young, Zachos   +41 more
core   +1 more source