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| Titel |
RIMBAY – a multi-approximation 3D ice-dynamics model for comprehensive applications: model description and examples |
| VerfasserIn |
M. Thoma, K. Grosfeld, D. Barbi, J. Determann, S. Goeller, C. Mayer, F. Pattyn |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 1 ; Nr. 7, no. 1 (2014-01-07), S.1-21 |
| Datensatznummer |
250115529
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| Publikation (Nr.) |
 copernicus.org/gmd-7-1-2014.pdf |
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| Zusammenfassung |
| Glaciers and ice caps exhibit currently the largest
cryospheric contributions to sea level rise. Modelling the dynamics and mass
balance of the major ice sheets is therefore an important issue to
investigate the current state and the future response of the cryosphere in
response to changing environmental conditions, namely global warming. This
requires a powerful, easy-to-use, versatile multi-approximation ice dynamics
model. Based on the well-known and established ice sheet model of
Pattyn (2003) we develop the modular multi-approximation thermomechanic ice
model RIMBAY, in which we improve the original version in several
aspects like a shallow ice–shallow shelf coupler and a full
3D-grounding-line migration scheme based on Schoof's (2007) heuristic
analytical approach. We summarise the full Stokes equations and several
approximations implemented within this model and we describe the different
numerical discretisations. The results are cross-validated against previous
publications dealing with ice modelling, and some additional artificial
set-ups demonstrate the robustness of the different solvers and their
internal coupling. RIMBAY is designed for an easy adaption to new
scientific issues. Hence, we demonstrate in very different set-ups the
applicability and functionality of RIMBAY in Earth system science in
general and ice modelling in particular. |
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