Results 81 to 90 of about 95,350 (324)

Large and irreversible future decline of the Greenland ice sheet

The Cryosphere, 2020
. We have studied the evolution of the Greenland ice sheet under a range of constant climates typical of those projected for the end of the present century using a dynamical ice sheet model (Glimmer) coupled to an atmosphere general circulation model ...
J. Gregory, S. George, Robin S. Smith
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

Greenland ice sheet mass balance assessed by PROMICE (1995–2015)

Geological Survey of Denmark and Greenland Bulletin, 2019
The Programme for Monitoring of the Greenland Ice Sheet (PROMICE) has measured ice-sheet elevation and thickness via repeat airborne surveys circumscribing the ice sheet at an average elevation of 1708 ± 5 m (Sørensen et al. 2018).
William Colgan, Kenneth D Mankoff, Kristian K Kjeldsen, Anders A Bjørk, Jason E Box, Sebastian B Simonsen, Louise S Sørensen, S. Abbas Khan, Anne M Solgaard, Rene Forsberg, Henriette Skourup, Lars Stenseng, Steen S Kristensen, Sine M Hvidegaard, Michele Citterio, Nanna Karlsson, Xavier Fettweis, Andreas P Ahlstrøm, Signe B Andersen, Dirk van As, Robert S Fausto   +20 more
doaj   +1 more source

Influence of temperature fluctuations on equilibrium
ice sheet volume [PDF]

The Cryosphere, 2018
Forecasting the future sea level relies on accurate modeling of the response of the Greenland and Antarctic ice sheets to changing temperatures. The surface mass balance (SMB) of the Greenland Ice Sheet (GrIS) has a nonlinear response to warming. Cold
T. B. Mikkelsen, A. Grinsted, P. Ditlevsen   +2 more
doaj   +1 more source

Refreezing on the Greenland ice sheet: a comparison of parameterizations [PDF]

The Cryosphere, 2012
Abstract. Retention and refreezing of meltwater are acknowledged to be important processes for the mass budget of polar glaciers and ice sheets. Several parameterizations of these processes exist for use in energy and mass balance models. Due to a lack of direct observations, validation of these parameterizations is difficult.
Janneke Ettema, Janneke Ettema, Xavier Fettweis, Lennert B. Stap, M. R. van den Broeke, Carleen Reijmer   +5 more
openaire   +5 more sources

Response of a marine-terminating Greenland outlet glacier to abrupt cooling 8200 and 9300 years ago [PDF]

, 2011
Long-term records of Greenland outlet-glacier change extending beyond the satellite era can inform future predictions of Greenland Ice Sheet behavior. Of particular relevance is elucidating the Greenland Ice Sheet's response to decadal- and centennial ...
Axford, Y., Babonis, G.S., Briner, J.P., Csatho, B., Finkel, R.C., Rood, D.H., Young, N.E.   +6 more
core   +1 more source

Using results from the PlioMIP ensemble to investigate the Greenland Ice Sheet during the mid-Pliocene Warm Period [PDF]

Climate of the Past, 2015
During an interval of the Late Pliocene, referred to here as the mid-Pliocene Warm Period (mPWP; 3.264 to 3.025 million years ago), global mean temperature was similar to that predicted for the end of this century, and atmospheric carbon dioxide ...
A. M. Dolan, S. J. Hunter, D. J. Hill, A. M. Haywood, S. J. Koenig, B. L. Otto-Bliesner, A. Abe-Ouchi, F. Bragg, W.-L. Chan, M. A. Chandler, C. Contoux, A. Jost, Y. Kamae, G. Lohmann, D. J. Lunt, G. Ramstein, N. A. Rosenbloom, L. Sohl, C. Stepanek, H. Ueda, Q. Yan, Z. Zhang   +21 more
doaj   +1 more source

The Cenomanian–Turonian boundary interval in the Western Canada Foreland Basin: Stratigraphy, geochemistry, geochronology and sea‐level changes recorded in expanded and condensed clastic successions

The Depositional Record, EarlyView.
Shallow‐marine mudstone of the Cretaceous Kaskapau Formation in the British Columbia foredeep preserves a 185 m thick record of OAE2. The organic carbon‐isotope and osmium‐isotope excursions can be correlated in detail with other Cenomanian–Turonian boundary sections around the world.
A. Guy Plint, Darren R. Gröcke, David Selby, Ireneusz Walaszczyk, Sandra L. Kamo, Ian Jarvis, João Trabucho‐Alexandre, Jessica Flynn, Frederick J. Longstaffe, Kienan P. Marion, Bogdan L. Varban, Alice D. C. Du Vivier, David Uličný   +12 more
wiley   +1 more source

The Balance of the Greenland Ice Sheet [PDF]

Journal of Glaciology, 1955
AbstractPlanimetry of the 15 maps of scale 1:1,000,000 of the World Aeronautical Chart, U.S.A.F., gives 1.726 × 106 km.2 for the surface area of the Greenland Ice Sheet. The hypsometric curve obtained by measuring the area between contours at 1000-ft. (305 m.) intervals with a planimeter gives 2135 m. for the mean height of the ice sheet.
openaire   +2 more sources

Greenland Ice Sheet: Increased coastal thinning [PDF]

Geophysical Research Letters, 2004
Repeated laser‐altimeter surveys and modelled snowfall/summer melt show average ice loss from Greenland between 1997 and 2003 was 80 ± 12 km3 yr−1, compared to about 60 km3 yr−1 for 1993/4–1998/9. Half of the increase was from higher summer melting, with the rest caused by velocities of some glaciers exceeding those needed to balance upstream snow ...
Philippe Huybrechts, Philippe Huybrechts, S. Manizade, J. Yungel, Robert H. Thomas, Robert H. Thomas, Robert N. Swift, William B. Krabill, John Cappelen, John Sonntag, Beata Csatho, Waleed Abdalati, Edward Hanna, E. Frederick, C. Martin   +14 more
openaire   +4 more sources