Results 61 to 70 of about 407 (118)
Design and performance of ELSA v2.0: an isochronal model for ice-sheet layer tracing [PDF]
Geoscientific Model DevelopmentWe provide a detailed description of the ice-sheet layer age tracer Englacial Layer Simulation Architecture (ELSA) – a model that uses a straightforward method to simulate the englacial stratification of large ice sheets – as an alternative to Eulerian ...
T. Rieckh +7 more
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Geophysical Research Letters, 2019 The Greenland Ice Sheet is a substantial reservoir of almost 7 m of sea level equivalent, and on average, climate dictates 60% of its sea level contribution. Changes in ice discharge, driven by perturbations in outlet glacier ice dynamics, constitute the
Nicole‐Jeanne Schlegel, Eric Y. Larour
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Environmental Research Letters, 2015 Albedo modification (AM) is sometimes characterized as a potential means of avoiding climate threshold responses, including large-scale ice sheet mass loss. Previous work has investigated the effects of AM on total sea-level rise over the present century,
Patrick J Applegate, Klaus Keller
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A backscattering and propagation model for radar sounding of ice sheets [PDF]
2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016 In this paper the electromagnetic properties of the continental ice sheets are modeled with the aim of assessing the feasibility of space-based radar ice sounding at P-band. The paper focuses on the model itself, as distinct from the estimation of model parameters and the exploitation of the model.
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Modelling the evolution of an ice sheet’s weathering crust
IMA Journal of Applied MathematicsAbstract The weathering crust is a layer of porous ice that can form at the surface of an ice sheet. It grows and decays in response changing weather and climate conditions, affecting the albedo, the melt rate and the transport of meltwater across the surface. To understand this behaviour, we seek time-dependent solutions to a continuum,
Tilly Woods, Ian J Hewitt
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Katabatic Winds on Ice Sheets: A Refinement of the Prandtl Model
Journal of the Atmospheric Sciences, 2007 Abstract Katabatic winds on ice sheets and glaciers are buoyancy-driven flows, much like turbidity currents in the ocean. These winds are driven by radiative cooling of the ice surface and are not resolved by the typical horizontal and vertical discretization of general circulation models; therefore, a parameterization of their magnitude
Zammett, R, Fowler, A
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Sediment Freeze‐On and Transport Near the Onset of a Fast‐Flowing Glacier in East Antarctica
Geophysical Research LettersUnderstanding the material properties and physical conditions of basal ice is crucial for a comprehensive understanding of Antarctic ice‐sheet dynamics. Yet, direct data are sparse and difficult to acquire.
Steven Franke +5 more
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Millennial‐Scale Vulnerability of the Antarctic Ice Sheet to Regional Ice Shelf Collapse
Geophysical Research Letters, 2019 The Antarctic Ice Sheet (AIS) remains the largest uncertainty in projections of future sea level rise. A likely climate‐driven vulnerability of the AIS is thinning of floating ice shelves resulting from surface‐melt‐driven hydrofracture or incursion of ...
Daniel F. Martin +2 more
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Scientific ReportsUnderstanding East Antarctic Ice Sheet dynamics during the mid-Holocene remains challenging due to complex climate interactions. Using Global Navigation Satellite System observations and glacial isostatic adjustment modeling, we investigate the ice-sheet
Jun’ichi Okuno +4 more
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Climatic Drivers of Ice Slabs and Firn Aquifers in Greenland
Geophysical Research LettersRecent observations revealed the existence of ice slabs and aquifers on the Greenland ice sheet (GrIS). Both affect the ice sheet's hydrology: ice slabs facilitate runoff and aquifers modulate drainage to the bed.
M. Brils +6 more
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