Results 31 to 40 of about 51,911 (276)

Earliest Holocene south Greenland ice sheet retreat within its late Holocene extent [PDF]

, 2014
Early Holocene summer warmth drove dramatic Greenland ice sheet (GIS) retreat. Subsequent insolation-driven cooling caused GIS margin readvance to late Holocene maxima, from which ice margins are now retreating.
Anslow, FS, Axford, Y, Brook, EJ, Carlson, AE, Legrande, AN, Rood, DH, Sinclair, G, Ullman, DJ, Winsor, K   +8 more
core   +1 more source

GBaTSv2: a revised synthesis of the likely basal thermal state of the Greenland Ice Sheet [PDF]

The Cryosphere, 2022
The basal thermal state (frozen or thawed) of the Greenland Ice Sheet is under-constrained due to few direct measurements, yet knowledge of this state is becoming increasingly important to interpret modern changes in ice flow. The first synthesis of this
J. A. MacGregor, W. Chu, W. T. Colgan, M. A. Fahnestock, D. Felikson, D. Felikson, N. B. Karlsson, S. M. J. Nowicki, M. Studinger   +8 more
doaj   +1 more source

Holocene deceleration of the Greenland Ice Sheet [PDF]

Science, 2016
Keeping a stiff upper layer The interior of the Greenland Ice Sheet is growing thicker, in contrast to the thinning that is occurring at its edges. Why? MacGregor et al. conclude that more snow is accumulating and that the ice in the interior is flowing more slowly than it did thousands of years ago (see ...
MacGregor, Joseph A, Colgan, William T, Fahnestock, Mark A, Morlighem, Mathieu, Catania, Ginny A, Paden, John D, Gogineni, S Prasad   +6 more
openaire   +4 more sources

Greenland Ice Sheet Ice Slab Expansion and Thickening

Geophysical Research Letters, 2022
We use airborne accumulation radar data acquired over the Greenland Ice Sheet between 2002 and 2018 to identify changes in ice slab extent and thickness. We show that ice slabs several metres thick were already present at least as early as 2002. Between 2012 and 2018, they expanded 13,400-17,600  inland, or by 37-44%.
Jullien, N., Tedstone, A. J., Machguth, H., Karlsson, N. B., Helm, V.   +4 more
openaire   +3 more sources

Ice sheets as a significant source of highly reactive nanoparticulate iron to the oceans [PDF]

, 2014
The Greenland and Antarctic Ice Sheets cover ~\n10% of global land surface, but are rarely considered as active components of the global iron cycle. The ocean waters around both ice sheets harbour highly productive coastal ecosystems, many of which are ...
Benning, Liane G., Hawkings, Jon R., Lee, Katherine, Nienow, Peter, Raiswell, Rob, Statham, Peter J., Tedstone, Andrew, Telling, Jon, Tranter, Martyn, Wadham, Jemma L.   +9 more
core   +2 more sources

Recent Progress in Greenland Ice Sheet Modelling [PDF]

Current Climate Change Reports, 2017
This paper reviews the recent literature on numerical modelling of the dynamics of the Greenland ice sheet with the goal of providing an overview of advancements and to highlight important directions of future research. In particular, the review is focused on large-scale modelling of the ice sheet, including future projections, model parameterisations,
Heiko Goelzer, Alexander Robinson, Helene Seroussi, Roderik S.W. van de Wal   +3 more
openaire   +7 more sources

Preservation of a Preglacial Landscape Under the Center of the Greenland Ice Sheet [PDF]

, 2014
Continental ice sheets typically sculpt landscapes via erosion; under certain conditions, ancient landscapes can be preserved beneath ice and can survive extensive and repeated glaciation.
Bierman, Paul R., Corbett, Lee B., Crosby, Benjamin T., Graly, Joseph A., Lini, Andrea, Neumann, Thomas Allen, Rood, Dylan H.   +6 more
core   +2 more sources

Clouds enhance Greenland ice sheet meltwater runoff [PDF]

Nature Communications, 2016
AbstractThe Greenland ice sheet has become one of the main contributors to global sea level rise, predominantly through increased meltwater runoff. The main drivers of Greenland ice sheet runoff, however, remain poorly understood. Here we show that clouds enhance meltwater runoff by about one-third relative to clear skies, using a unique combination of
Van Tricht, K, Lhermitte, S, Lenaerts, J T M, Gorodetskaya, I V, L'Ecuyer, T S, Noël, Brice, van den Broeke, M R, Turner, D D, van Lipzig, N P M   +8 more
openaire   +4 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

Greenland Ice Sheet - Higher non-linearity of ice flow significantly reduces estimated basal motion [PDF]

, 2018
In times of warming in polar regions, the prediction of ice sheet discharge is of utmost importance to society, because of its impact on sea level rise. In simulations the flow rate of ice is usually implemented as proportional to the differential stress
Bons, Paul D., Jansen, Daniela, Kleiner, Thomas, Llorens, Maria-Gema, Prior, David J., Sachau, Till, Weikusat, Ilka   +6 more
core   +1 more source