Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates
Numerical modeling shows great potential as a method for investigating and predicting the future development of ice shelves in a warming climate. The quality of ice shelf-ocean models is continuously improving but some limitations remain. For models using a terrain-following vertical coordinate, one...
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Online Access: | https://oceanrep.geomar.de/id/eprint/49221/ https://doi.org/10.1016/j.ocemod.2019.101487 |
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ftoceanrep:oai:oceanrep.geomar.de:49221 2023-05-15T16:13:14+02:00 Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates Schnaase, Frank Timmermann, Ralph 2019 https://oceanrep.geomar.de/id/eprint/49221/ https://doi.org/10.1016/j.ocemod.2019.101487 unknown Elsevier Schnaase, F. and Timmermann, R. (2019) Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates. Ocean Modelling, 144 (101487). DOI 10.1016/j.ocemod.2019.101487 <https://doi.org/10.1016/j.ocemod.2019.101487>. doi:10.1016/j.ocemod.2019.101487 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2019 ftoceanrep https://doi.org/10.1016/j.ocemod.2019.101487 2023-04-07T15:49:49Z Numerical modeling shows great potential as a method for investigating and predicting the future development of ice shelves in a warming climate. The quality of ice shelf-ocean models is continuously improving but some limitations remain. For models using a terrain-following vertical coordinate, one such limitation is the enforcement of a minimum water-column thickness beneath ice shelves by adjustment of bottom topography. How this local distortion of bathymetry from reality affects modeled melt rates and cavity circulation is unknown so far. To quantify this effect, simulations with the Finite Element Sea ice–ice shelf–Ocean Model (FESOM) were executed on four different grids with minimum water-column thicknesses of 20 m, 50 m, 100 m and 200 m. While we use a global model grid, modifications of bathymetry are applied only to Filchner–Ronne Ice Shelf. We show that the choice of minimum water-column thickness does not affect the total basal melt rate of this cold-water ice shelf but does in fact impact the distribution of melt rates with significant differences between experiments in the magnitude of melting near the grounding lines. Article in Journal/Newspaper Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Ocean Modelling 144 101487 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
unknown |
description |
Numerical modeling shows great potential as a method for investigating and predicting the future development of ice shelves in a warming climate. The quality of ice shelf-ocean models is continuously improving but some limitations remain. For models using a terrain-following vertical coordinate, one such limitation is the enforcement of a minimum water-column thickness beneath ice shelves by adjustment of bottom topography. How this local distortion of bathymetry from reality affects modeled melt rates and cavity circulation is unknown so far. To quantify this effect, simulations with the Finite Element Sea ice–ice shelf–Ocean Model (FESOM) were executed on four different grids with minimum water-column thicknesses of 20 m, 50 m, 100 m and 200 m. While we use a global model grid, modifications of bathymetry are applied only to Filchner–Ronne Ice Shelf. We show that the choice of minimum water-column thickness does not affect the total basal melt rate of this cold-water ice shelf but does in fact impact the distribution of melt rates with significant differences between experiments in the magnitude of melting near the grounding lines. |
format |
Article in Journal/Newspaper |
author |
Schnaase, Frank Timmermann, Ralph |
spellingShingle |
Schnaase, Frank Timmermann, Ralph Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
author_facet |
Schnaase, Frank Timmermann, Ralph |
author_sort |
Schnaase, Frank |
title |
Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
title_short |
Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
title_full |
Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
title_fullStr |
Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
title_full_unstemmed |
Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
title_sort |
representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://oceanrep.geomar.de/id/eprint/49221/ https://doi.org/10.1016/j.ocemod.2019.101487 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) |
geographic |
Ronne Ice Shelf |
geographic_facet |
Ronne Ice Shelf |
genre |
Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
genre_facet |
Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Sea ice |
op_relation |
Schnaase, F. and Timmermann, R. (2019) Representation of shallow grounding zones in an ice shelf-ocean model with terrain-following coordinates. Ocean Modelling, 144 (101487). DOI 10.1016/j.ocemod.2019.101487 <https://doi.org/10.1016/j.ocemod.2019.101487>. doi:10.1016/j.ocemod.2019.101487 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.ocemod.2019.101487 |
container_title |
Ocean Modelling |
container_volume |
144 |
container_start_page |
101487 |
_version_ |
1765998890307289088 |