Results 61 to 70 of about 1,626,068 (395)

West Antarctic ice sheet and CO2 greenhouse effect: a threat of disaster

open access: yesScottish Geographical Journal, 2020
Over 40 years ago, the glaciologist John Mercer warned that parts of the West Antarctic Ice Sheet were at risk of collapse due to the CO2 greenhouse effect.
D. Benn, D. Sugden
semanticscholar   +1 more source

Modeling the Greenland englacial stratigraphy [PDF]

open access: yesThe Cryosphere, 2021
Radar reflections from the interior of the Greenland ice sheet contain a comprehensive archive of past accumulation rates, ice dynamics, and basal melting. Combining these data with dynamic ice sheet models may greatly aid model calibration, improve past
A. Born   +4 more
doaj   +1 more source

Eastern Beringia and beyond: Late Wisconsinan and Holocene landscape dynamics along the Yukon Coastal Plain, Canada [PDF]

open access: yes, 2012
Terrestrial permafrost archives along the Yukon Coastal Plain (northwest Canada) have recorded landscape development and environmental change since the Late Wisconsinan at the interface of unglaciated Beringia (i.e.
Fritz, Michael   +6 more
core   +1 more source

A stochastic parameterization of ice sheet surface mass balance for the Stochastic Ice-Sheet and Sea-Level System Model (StISSM v1.0) [PDF]

open access: yesGeoscientific Model Development
Many scientific and societal questions that draw on ice sheet modeling necessitate sampling a wide range of potential climatic changes and realizations of internal climate variability.
L. Ultee   +3 more
doaj   +1 more source

Marine ice sheet instability and ice shelf buttressing of the Minch Ice Stream, northwest Scotland [PDF]

open access: yesThe Cryosphere, 2018
Uncertainties in future sea level projections are dominated by our limited understanding of the dynamical processes that control instabilities of marine ice sheets. The last deglaciation of the British–Irish Ice Sheet offers a valuable example to examine
N. Gandy   +7 more
doaj   +1 more source

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

open access: yes, 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.   +4 more
core   +2 more sources

Firn on ice sheets

open access: yesNature Reviews Earth & Environment
Most of the Greenland and Antarctic ice sheets are covered with firn — the transitional material between snow and glacial ice. Firn is vital for understanding ice-sheet mass balance and hydrology, and palaeoclimate. In this Review, we synthesize knowledge of firn, including its formation, observation, modelling and relevance to ice sheets.
Amory, Charles   +34 more
openaire   +4 more sources

Anisotropic Radial Basis Function Methods for Continental Size Ice Sheet Simulations

open access: yes, 2017
In this paper we develop and implement anisotropic radial basis function methods for simulating the dynamics of ice sheets and glaciers. We test the methods on two problems: the well-known benchmark ISMIP-HOM B that corresponds to a glacier size ice and ...
Cheng, Gong, Shcherbakov, Victor
core   +1 more source

ICESat: Ice, Cloud, and land Elevation Satellite [PDF]

open access: yes, 2007
This brochure describes NASA's ICESat mission ((Ice, Cloud, and land Elevation Satellite), which was launched January 12, 2003. ICESat is the benchmark Earth Observing System mission for measuring ice sheet mass balance, cloud and aerosol heights, as ...

core   +1 more source

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

open access: yes, 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.   +4 more
core   +2 more sources

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