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| Titel |
\textsc{Rimbay} -- A multi-physics 3D ice-sheet model for comprehensive applications: Model-description & examples |
| VerfasserIn |
M. Thoma, K. Grosfeld, J. Determann, D. Barbi, S. Göller, F. Pattyn, C. Mayer |
| Konferenz |
EGU General Assembly 2012
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 14 (2012) |
| Datensatznummer |
250068218
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| Zusammenfassung |
| Glaciers and ice caps are 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 to changing
environmental conditions, namely global warming. On the other hand, the Earth’s climate
history is determined by the evolution of southern and northern hemisphere ice sheets
which vary between glacial and interglacial extent during the last million years.
For all these demands, a powerful high resolution multi-physics ice sheet model is
needed.
Based on the well-known and established ice sheet model by Pattyn (2003) we developed
the Higher-Order/Full-Stokes physics thermomechanic ice model RIMBAY, in which we
improved the original version in several aspects like a shallow-ice – shallow-shelf coupler
and a full 3D grounding-line migration scheme based on the Schoof’s analytical approach.
Further capabilities address the incorporation of basal hydrology as well as crustal
adjustments by viscoelastic processes due to ice loads on long time scales. Different grid
representations, a netdcf data-exchange interface, and plug-and-play GMT visualization tools
make the RIMBAY package applicable to all conceivable tasks of ice-sheet modeling.
Example model-setups and reference models cover almost any order of scales in time or
space.
Here, we present results from a variety of model projects investigating, e.g., the flow
across subglacial lakes, ice-shelf-ocean interaction with grounding-line migration, and results
from coupling RIMBAY to the earth system model COSMOS and to a viscoelastic isostatic
adjustment model. |
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