The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet
We present a dynamic equilibrium simulation of the ice sheet-shelf system on Antarctica with the Potsdam Parallel Ice Sheet Model (PISM-PIK). The simulation is initialized with present-day conditions for bed topography and ice thickness and then run to steady state with constant present-day surface...
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fttibhannoverren:oai:oa.tib.eu:123456789/679 2023-05-15T13:53:55+02:00 The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet Martin, M.A. Winkelmann, R. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. 2011 application/pdf https://oa.tib.eu/renate/handle/123456789/679 https://doi.org/10.34657/1327 eng eng München : European Geopyhsical Union DOI:https://doi.org/10.5194/tc-5-727-2011 https://doi.org/10.34657/1327 https://oa.tib.eu/renate/handle/123456789/679 CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich CC-BY The Cryosphere, Volume 5, Issue 3, Page 727-740 cryosphere database flow pattern grounding line ice flow ice sheet ice shelf ice thickness mass balance melt numerical model parameterization sea ice steady-state equilibrium surface temperature three-dimensional modeling transition zone ddc:550 status-type:publishedVersion doc-type:article doc-type:Text 2011 fttibhannoverren https://doi.org/10.34657/1327 https://doi.org/10.5194/tc-5-727-2011 2022-09-19T16:17:58Z We present a dynamic equilibrium simulation of the ice sheet-shelf system on Antarctica with the Potsdam Parallel Ice Sheet Model (PISM-PIK). The simulation is initialized with present-day conditions for bed topography and ice thickness and then run to steady state with constant present-day surface mass balance. Surface temperature and sub-shelf basal melt distribution are parameterized. Grounding lines and calving fronts are free to evolve, and their modeled equilibrium state is compared to observational data. A physically-motivated calving law based on horizontal spreading rates allows for realistic calving fronts for various types of shelves. Steady-state dynamics including surface velocity and ice flux are analyzed for whole Antarctica and the Ronne-Filchner and Ross ice shelf areas in particular. The results show that the different flow regimes in sheet and shelves, and the transition zone between them, are captured reasonably well, supporting the approach of superposition of SIA and SSA for the representation of fast motion of grounded ice. This approach also leads to a natural emergence of sliding-dominated flow in stream-like features in this new 3-D marine ice sheet model. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice The Cryosphere Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) Antarctic Pik ENVELOPE(67.200,67.200,-70.783,-70.783) Ross Ice Shelf The Antarctic |
institution |
Open Polar |
collection |
Renate - Repositorium für Naturwissenschaften und Technik (TIB Hannover) |
op_collection_id |
fttibhannoverren |
language |
English |
topic |
cryosphere database flow pattern grounding line ice flow ice sheet ice shelf ice thickness mass balance melt numerical model parameterization sea ice steady-state equilibrium surface temperature three-dimensional modeling transition zone ddc:550 |
spellingShingle |
cryosphere database flow pattern grounding line ice flow ice sheet ice shelf ice thickness mass balance melt numerical model parameterization sea ice steady-state equilibrium surface temperature three-dimensional modeling transition zone ddc:550 Martin, M.A. Winkelmann, R. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
topic_facet |
cryosphere database flow pattern grounding line ice flow ice sheet ice shelf ice thickness mass balance melt numerical model parameterization sea ice steady-state equilibrium surface temperature three-dimensional modeling transition zone ddc:550 |
description |
We present a dynamic equilibrium simulation of the ice sheet-shelf system on Antarctica with the Potsdam Parallel Ice Sheet Model (PISM-PIK). The simulation is initialized with present-day conditions for bed topography and ice thickness and then run to steady state with constant present-day surface mass balance. Surface temperature and sub-shelf basal melt distribution are parameterized. Grounding lines and calving fronts are free to evolve, and their modeled equilibrium state is compared to observational data. A physically-motivated calving law based on horizontal spreading rates allows for realistic calving fronts for various types of shelves. Steady-state dynamics including surface velocity and ice flux are analyzed for whole Antarctica and the Ronne-Filchner and Ross ice shelf areas in particular. The results show that the different flow regimes in sheet and shelves, and the transition zone between them, are captured reasonably well, supporting the approach of superposition of SIA and SSA for the representation of fast motion of grounded ice. This approach also leads to a natural emergence of sliding-dominated flow in stream-like features in this new 3-D marine ice sheet model. |
format |
Article in Journal/Newspaper |
author |
Martin, M.A. Winkelmann, R. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. |
author_facet |
Martin, M.A. Winkelmann, R. Haseloff, M. Albrecht, T. Bueler, E. Khroulev, C. Levermann, A. |
author_sort |
Martin, M.A. |
title |
The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
title_short |
The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
title_full |
The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
title_fullStr |
The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
title_full_unstemmed |
The Potsdam Parallel Ice Sheet Model (PISM-PIK) - Part 2: Dynamic equilibrium simulation of the Antarctic ice sheet |
title_sort |
potsdam parallel ice sheet model (pism-pik) - part 2: dynamic equilibrium simulation of the antarctic ice sheet |
publisher |
München : European Geopyhsical Union |
publishDate |
2011 |
url |
https://oa.tib.eu/renate/handle/123456789/679 https://doi.org/10.34657/1327 |
long_lat |
ENVELOPE(67.200,67.200,-70.783,-70.783) |
geographic |
Antarctic Pik Ross Ice Shelf The Antarctic |
geographic_facet |
Antarctic Pik Ross Ice Shelf The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice The Cryosphere |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Ice Shelf Ross Ice Shelf Sea ice The Cryosphere |
op_source |
The Cryosphere, Volume 5, Issue 3, Page 727-740 |
op_relation |
DOI:https://doi.org/10.5194/tc-5-727-2011 https://doi.org/10.34657/1327 https://oa.tib.eu/renate/handle/123456789/679 |
op_rights |
CC BY 3.0 Unported https://creativecommons.org/licenses/by/3.0/ frei zugänglich |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.34657/1327 https://doi.org/10.5194/tc-5-727-2011 |
_version_ |
1766259386885341184 |