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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ftleibnizopen:oai:oai.leibnizopen.de:ph6DMYsBBwLIz6xGIS6f 2023-11-12T04:08:25+01:00 The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 1: Model description Winkelmann, R. Martin, M.A. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. 2011 application/pdf https://doi.org/10.34657/1326 https://oa.tib.eu/renate/handle/123456789/677 eng eng München : European Geopyhsical Union CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ The Cryosphere, Volume 5, Issue 3, Page 715-726 cryosphere equilibrium grounding line hydrostatics ice cover ice sheet momentum numerical model shear sliding stress analysis velocity profile 550 article Text 2011 ftleibnizopen https://doi.org/10.34657/1326 2023-10-15T23:28:37Z 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). publishedVersion Article in Journal/Newspaper Antarc* Antarctica Ice Sheet Ice Shelf The Cryosphere Unknown Pik ENVELOPE(67.200,67.200,-70.783,-70.783) |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
cryosphere equilibrium grounding line hydrostatics ice cover ice sheet momentum numerical model shear sliding stress analysis velocity profile 550 |
spellingShingle |
cryosphere equilibrium grounding line hydrostatics ice cover ice sheet momentum numerical model shear sliding stress analysis velocity profile 550 Winkelmann, R. Martin, M.A. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 1: Model description |
topic_facet |
cryosphere equilibrium grounding line hydrostatics ice cover ice sheet momentum numerical model shear sliding stress analysis velocity profile 550 |
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). publishedVersion |
format |
Article in Journal/Newspaper |
author |
Winkelmann, R. Martin, M.A. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. |
author_facet |
Winkelmann, R. Martin, M.A. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. |
author_sort |
Winkelmann, R. |
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 |
publisher |
München : European Geopyhsical Union |
publishDate |
2011 |
url |
https://doi.org/10.34657/1326 https://oa.tib.eu/renate/handle/123456789/677 |
long_lat |
ENVELOPE(67.200,67.200,-70.783,-70.783) |
geographic |
Pik |
geographic_facet |
Pik |
genre |
Antarc* Antarctica Ice Sheet Ice Shelf The Cryosphere |
genre_facet |
Antarc* Antarctica Ice Sheet Ice Shelf The Cryosphere |
op_source |
The Cryosphere, Volume 5, Issue 3, Page 715-726 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.34657/1326 |
_version_ |
1782328723365691392 |