The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections?
Sub-shelf melting is the main driver of current Antarctic mass loss. However, the ocean processesgoverning ice shelf melting are not well understood and sub-shelf melt is currently themain uncertainty source within Antarctic sea level projections. Several parameterizations of differentcomplexity exi...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/367904 2024-02-11T09:56:57+01:00 The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? Zipf, Lars Coulon, Violaine Pattyn, Frank 36th Forum for Research into Ice Shelf Processes (FRISP 2023) (19-22 June 2023: Stalheim, Norway) 2023-06-21 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/367904 en eng http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/367904 Sciences exactes et naturelles info:eu-repo/semantics/conferencePoster info:ulb-repo/semantics/conferencePoster info:ulb-repo/semantics/openurl/document 2023 ftunivbruxelles 2024-01-17T23:23:57Z Sub-shelf melting is the main driver of current Antarctic mass loss. However, the ocean processesgoverning ice shelf melting are not well understood and sub-shelf melt is currently themain uncertainty source within Antarctic sea level projections. Several parameterizations of differentcomplexity exist and can be used by standalone ice sheet models to link oceanic propertiesto sub-shelf melt.The various melt parameterizations already contribute significantly to the uncertainty of futuresimulations of the Antarctic ice sheet. In addition, several approaches exist to determine thetuning parameters used within the sub-shelf melt parameterizations, adding another layer of uncertainty.Furthermore, how the parameterization is integrated into the initialization procedureof the ice sheet model additionally contributes to the uncertainty of the projections.Here, we use Kori, a vertically integrated hybrid (SSA-SIA) ice sheet–ice shelf model (the successorof f.ETISh with improved initialization procedure strongly reducing the model drift), toinvestigate how the different possibilities of implementing the sub-shelf melt parameterizationsin a standalone ice sheet model contribute to the uncertainty of Antarctica’s future contributionto global mean sea level rise. In particular, the different possibilities of integrating the sub-shelfmelt parameterization into the initialization procedure of the ice sheet model are evaluated inmore detail. To minimize the feedback of different ice geometries after the initialization, a similarinitialization procedure, based on data assimilation of the ice geometry and aiming for a steadystate at the end of the initialization, is performed for all experiments. info:eu-repo/semantics/published Conference Object Antarc* Antarctic Ice Sheet Ice Shelf DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Antarctic The Antarctic |
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Open Polar |
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DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
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ftunivbruxelles |
language |
English |
topic |
Sciences exactes et naturelles |
spellingShingle |
Sciences exactes et naturelles Zipf, Lars Coulon, Violaine Pattyn, Frank The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
topic_facet |
Sciences exactes et naturelles |
description |
Sub-shelf melting is the main driver of current Antarctic mass loss. However, the ocean processesgoverning ice shelf melting are not well understood and sub-shelf melt is currently themain uncertainty source within Antarctic sea level projections. Several parameterizations of differentcomplexity exist and can be used by standalone ice sheet models to link oceanic propertiesto sub-shelf melt.The various melt parameterizations already contribute significantly to the uncertainty of futuresimulations of the Antarctic ice sheet. In addition, several approaches exist to determine thetuning parameters used within the sub-shelf melt parameterizations, adding another layer of uncertainty.Furthermore, how the parameterization is integrated into the initialization procedureof the ice sheet model additionally contributes to the uncertainty of the projections.Here, we use Kori, a vertically integrated hybrid (SSA-SIA) ice sheet–ice shelf model (the successorof f.ETISh with improved initialization procedure strongly reducing the model drift), toinvestigate how the different possibilities of implementing the sub-shelf melt parameterizationsin a standalone ice sheet model contribute to the uncertainty of Antarctica’s future contributionto global mean sea level rise. In particular, the different possibilities of integrating the sub-shelfmelt parameterization into the initialization procedure of the ice sheet model are evaluated inmore detail. To minimize the feedback of different ice geometries after the initialization, a similarinitialization procedure, based on data assimilation of the ice geometry and aiming for a steadystate at the end of the initialization, is performed for all experiments. info:eu-repo/semantics/published |
author2 |
36th Forum for Research into Ice Shelf Processes (FRISP 2023) (19-22 June 2023: Stalheim, Norway) |
format |
Conference Object |
author |
Zipf, Lars Coulon, Violaine Pattyn, Frank |
author_facet |
Zipf, Lars Coulon, Violaine Pattyn, Frank |
author_sort |
Zipf, Lars |
title |
The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
title_short |
The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
title_full |
The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
title_fullStr |
The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
title_full_unstemmed |
The details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - Does it matter for Antarctic sea level projections? |
title_sort |
details of how to implement and apply sub-shelf melt parametrizations in standalone ice sheet models - does it matter for antarctic sea level projections? |
publishDate |
2023 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/367904 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Ice Shelf |
genre_facet |
Antarc* Antarctic Ice Sheet Ice Shelf |
op_relation |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/367904 |
_version_ |
1790607220686192640 |