The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description
We present the Potsdam Parallel Ice Sheet Model (PISM-PIK), developed at the Potsdam Institute for Climate Impact Research to be used for simulations of large-scale ice sheet-shelf systems. It is derived from the Parallel Ice Sheet Model (Bueler and Brown, 2009). Velocities are calculated by superpo...
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:37103 2024-05-19T07:30:18+00:00 The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description Winkelmann, Ricarda (Prof. Dr.) Martin, Maria A. Haseloff, Monika Albrecht, Torsten Bueler, Ed Khroulev, C. Levermann, Anders (Prof. Dr.) 2011 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37103 https://doi.org/10.5194/tc-5-715-2011 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37103 https://doi.org/10.5194/tc-5-715-2011 info:eu-repo/semantics/closedAccess Institut für Physik und Astronomie article doc-type:article 2011 ftubpotsdam https://doi.org/10.5194/tc-5-715-2011 2024-04-23T23:32:43Z We present the Potsdam Parallel Ice Sheet Model (PISM-PIK), developed at the Potsdam Institute for Climate Impact Research to be used for simulations of large-scale ice sheet-shelf systems. It is derived from the Parallel Ice Sheet Model (Bueler and Brown, 2009). Velocities are calculated by superposition of two shallow stress balance approximations within the entire ice covered region: the shallow ice approximation (SIA) is dominant in grounded regions and accounts for shear deformation parallel to the geoid. The plug-flow type shallow shelf approximation (SSA) dominates the velocity field in ice shelf regions and serves as a basal sliding velocity in grounded regions. Ice streams can be identified diagnostically as regions with a significant contribution of membrane stresses to the local momentum balance. All lateral boundaries in PISM-PIK are free to evolve, including the grounding line and ice fronts. Ice shelf margins in particular are modeled using Neumann boundary conditions for the SSA equations, reflecting a hydrostatic stress imbalance along the vertical calving face. The ice front position is modeled using a subgrid-scale representation of calving front motion (Albrecht et al., 2011) and a physically-motivated calving law based on horizontal spreading rates. The model is tested in experiments from the Marine Ice Sheet Model Intercomparison Project (MISMIP). A dynamic equilibrium simulation of Antarctica under present-day conditions is presented in Martin et al. (2011). Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Ice Shelf University of Potsdam: publish.UP The Cryosphere 5 3 715 726 |
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Open Polar |
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University of Potsdam: publish.UP |
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ftubpotsdam |
language |
English |
topic |
Institut für Physik und Astronomie |
spellingShingle |
Institut für Physik und Astronomie Winkelmann, Ricarda (Prof. Dr.) Martin, Maria A. Haseloff, Monika Albrecht, Torsten Bueler, Ed Khroulev, C. Levermann, Anders (Prof. Dr.) The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
topic_facet |
Institut für Physik und Astronomie |
description |
We present the Potsdam Parallel Ice Sheet Model (PISM-PIK), developed at the Potsdam Institute for Climate Impact Research to be used for simulations of large-scale ice sheet-shelf systems. It is derived from the Parallel Ice Sheet Model (Bueler and Brown, 2009). Velocities are calculated by superposition of two shallow stress balance approximations within the entire ice covered region: the shallow ice approximation (SIA) is dominant in grounded regions and accounts for shear deformation parallel to the geoid. The plug-flow type shallow shelf approximation (SSA) dominates the velocity field in ice shelf regions and serves as a basal sliding velocity in grounded regions. Ice streams can be identified diagnostically as regions with a significant contribution of membrane stresses to the local momentum balance. All lateral boundaries in PISM-PIK are free to evolve, including the grounding line and ice fronts. Ice shelf margins in particular are modeled using Neumann boundary conditions for the SSA equations, reflecting a hydrostatic stress imbalance along the vertical calving face. The ice front position is modeled using a subgrid-scale representation of calving front motion (Albrecht et al., 2011) and a physically-motivated calving law based on horizontal spreading rates. The model is tested in experiments from the Marine Ice Sheet Model Intercomparison Project (MISMIP). A dynamic equilibrium simulation of Antarctica under present-day conditions is presented in Martin et al. (2011). |
format |
Article in Journal/Newspaper |
author |
Winkelmann, Ricarda (Prof. Dr.) Martin, Maria A. Haseloff, Monika Albrecht, Torsten Bueler, Ed Khroulev, C. Levermann, Anders (Prof. Dr.) |
author_facet |
Winkelmann, Ricarda (Prof. Dr.) Martin, Maria A. Haseloff, Monika Albrecht, Torsten Bueler, Ed Khroulev, C. Levermann, Anders (Prof. Dr.) |
author_sort |
Winkelmann, Ricarda (Prof. Dr.) |
title |
The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
title_short |
The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
title_full |
The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
title_fullStr |
The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
title_full_unstemmed |
The Potsdam parallel ice sheet model (PISM-PIK) - Part 1: Model description |
title_sort |
potsdam parallel ice sheet model (pism-pik) - part 1: model description |
publishDate |
2011 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37103 https://doi.org/10.5194/tc-5-715-2011 |
genre |
Antarc* Antarctica Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctica Ice Sheet Ice Shelf |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/37103 https://doi.org/10.5194/tc-5-715-2011 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5194/tc-5-715-2011 |
container_title |
The Cryosphere |
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5 |
container_issue |
3 |
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715 |
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726 |
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1799485191627997184 |