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| Titel |
Dynamic equilibrium simulation of Antarctica with the Potsdam Parallel Ice Sheet Model (PISM-PIK) |
| VerfasserIn |
Maria A. Martin, Ricarda Winkelmann, Marianne Haseloff, Torsten Albrecht, Ed Bueler, Constantine Khroulev, Anders Levermann |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250031895
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| Zusammenfassung |
| We present a dynamic equilibrium simulation of land ice on Antarctica with the Potsdam
Parallel Ice Sheet Model (PISM-PIK). In order to capture slow grounded ice flow, fast ice
shelf motion as well as fast flowing ice streams the shallow ice approximation (SIA) is
complemented by the shallow shelf approximation (SSA) on a velocity level. The initial
PISM code was enriched by physical parameterizations for subgrid-scale ice-shelf advance
and retreat, a large scale calving law (eigen-calving) and a stress boundary condition on the
ice-ocean boundary. This combination allows for free movement of the grounding
line as well as a dynamic calving front. We compare the dynamical equilibrium
simulation (order of 100000 model-years) with present observations and present
dynamical features associated with basal ice shelf melting and grounding line retreat. |
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