Ice Sheet System Model
Implementation and performance of adaptive mesh refinement in the Ice Sheet System Model (ISSM v4.14)
... of ice sheets in a changing climate require a fine mesh/grid resolution in ice sheet models to correctly capture fundamental physical processes, such as the evolution of the grounding line, the re- ...
19
An ice-sheet-wide framework for englacial attenuation from ice-penetrating radar data
... cal ice sheet model using attenuation rates inferred from IPR data was recently considered for the first time by MacGre- gor et ...(Ice Sheet System Model) model ...
24
Hindcasting to measure ice sheet model sensitivity to initial states
... an ice sheet system model. First we initial- ize an ice sheet system ...initialized model is integrated forward in time for a period where a wealth of data are ...
11
Towards direct coupling of regional climate models and ice sheet models by mass balance gradients: application to the Greenland Ice Sheet
... coupled ice sheet-climate model system, but such a coupling set-up is still not feasible due to the large difference in spatial scales and in length of the required model ...
43
Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions
... allel Ice Sheet Model ...the model system for transient long-term simulations of, ...the model system to reproduce the climate of two time slices, which are sufficiently ...
20
A balanced water layer concept for subglacial hydrology in large-scale ice sheet models
... for ice thickness and bedrock elevation exist. How- ever, for larger ice sheets or even continental-scale model- ing their application is limited, since the geological proper- ties of the bedrock are ...
12
An ice sheet model of reduced complexity for paleoclimate studies
... the ice but rather benefit from a more detailed representation of the surface mass balance, a better coupling with the climate system, probabilistic analyses based on multiple simulations and parameter ...
49
Capabilities and performance of Elmer/Ice, a new-generation ice sheet model
... The discretisation and linearisation of the varying viscos- ity Stokes system lead to linear systems which cannot be solved efficiently by using standard linear solvers. A special preconditioned version of the ...
20
Coupling of climate models and ice sheet models by surface mass balance gradients: application to the Greenland Ice Sheet
... coupled ice sheet-climate model system, but such a coupling set-up is still not feasi- ble due to the length of the required model simulations (kyr): ice sheet ...
18
A consistent data set of Antarctic ice sheet topography, cavity geometry, and global bathymetry
... glaciers, ice caps and ice sheets contributes to changes of the global sea ...of ice mass loss from the Antarctic ice sheet is an im- portant component in the IPCC’s Fifth Assessment ...
13
Interaction between ice sheet dynamics and subglacial lake circulation: a coupled modelling approach
... The model domain used in this study is a slightly enlarged version of the one presented in Pattyn (2003): It consists of a rectangular 168 100 km 2 large domain with a model resolu- tion of 5 km ...
12
How might the North American ice sheet influence the northwestern Eurasian climate?
... Kara ice sheet to warm temperatures over the southeastern part of the Fennoscandian region, induced by the FIS itself, along with the upslope pre- cipitation effect proposed by Sanberg and Oerlemans ...
24
Greenland Ice Sheet contribution to sea-level rise from a new-generation ice-sheet model
... Pattyn, F., Perichon, L., Aschwanden, A., Breuer, B., de Smedt, B., Gagliardini, O., Gudmunds- son, G. H., Hindmarsh, R. C. A., Hubbard, A., Johnson, J. V., Kleiner, T., Konovalov, Y., Mar- tin, C., Payne, A. J., ...
38
Palaeo sea-level and ice-sheet databases: problems, strategies and perspectives
... Attempts to generate databases of former ice-sheet and sea-level changes began almost a century ago (Daly, 1934; Godwin, 1940). The call for internationally coordi- nated compilations of sea-level data ...
16
Parameterising the grounding line in flow-line ice sheet models
... make model based predictions of the behaviour of marine ice sheets, ice sheet models must include a re- alistic representation of the motion of the grounding ...full ice sheet ...
15
Reconstruction of the 1979–2006 Greenland ice sheet surface mass balance using the regional climate model MAR
... consequently, the GrIS is likely to loose mass. In this case, the resulting freshwater increase could, on the one hand, per- turb the thermohaline circulation (THC) by reducing the den- sity contrast driving the THC ...
20
neXtSIM: a new Lagrangian sea ice model
... The model is sensitive to changes in the surface albedo, but this is to be expected and albedos are probably the most widely used tuning pa- rameters for ice and ice–ocean ...The model also ...
57
A new coupled ice sheet-climate model: description and sensitivity to model physics under Eemian, Last Glacial Maximum, late Holocene and modern climate conditions
... model. We were motivated to use the existing EMBM, instead of a positive-degree-day (PDD) model, to calculate the SMB for reasons that have been recently described (e.g., Bougamont et al., 2005). PDD ...
47
Polynyas in a dynamic-thermodynamic sea-ice model
... The model domain is a bay, 135 km long and 75 km wide at ...the ice floes being modelled are no larger than 250 m in ...granular model (Savage, ...sea ice behaves like a granular material, so ...
14
MODEL FOR INTRUSION DETECTION SYSTEM
... proposed model is to remove the challenges of MANET such as security and ...proposed model can compute appropriate route for communication and capable to obtain optimal, secure and reliable ...This ...
7