Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model
The Finite Element Sea ice Ocean Model (FESOM) has been augmented by an ice-shelf component with a three-equation system for diagnostic computation of boundary layer temperature and salinity. Ice shelf geometry and global ocean bathymetry have been derived from the RTopo-1 dataset. A global domain w...
Published in: | Annals of Glaciology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
INT GLACIOL SOC
2012
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/24946/ https://epic.awi.de/id/eprint/24946/1/Timmermann_et_al_2012__AoG.pdf http://www.igsoc.org/annals/53/60/t60A156.html https://hdl.handle.net/10013/epic.40279 https://hdl.handle.net/10013/epic.40279.d001 |
id |
ftawi:oai:epic.awi.de:24946 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:24946 2024-09-15T17:39:08+00:00 Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model Timmermann, Ralph Wang, Qiang Hellmer, Hartmut 2012 application/pdf https://epic.awi.de/id/eprint/24946/ https://epic.awi.de/id/eprint/24946/1/Timmermann_et_al_2012__AoG.pdf http://www.igsoc.org/annals/53/60/t60A156.html https://hdl.handle.net/10013/epic.40279 https://hdl.handle.net/10013/epic.40279.d001 unknown INT GLACIOL SOC https://epic.awi.de/id/eprint/24946/1/Timmermann_et_al_2012__AoG.pdf https://hdl.handle.net/10013/epic.40279.d001 Timmermann, R. , Wang, Q. orcid:0000-0002-2704-5394 and Hellmer, H. orcid:0000-0002-9357-9853 (2012) Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model , Annals of Glaciology, 53 (60) . doi:10.3189/2012AoG60A156 <https://doi.org/10.3189/2012AoG60A156> , hdl:10013/epic.40279 EPIC3Annals of Glaciology, INT GLACIOL SOC, 53(60), ISSN: 0260-3055 Article isiRev 2012 ftawi https://doi.org/10.3189/2012AoG60A156 2024-06-24T04:03:41Z The Finite Element Sea ice Ocean Model (FESOM) has been augmented by an ice-shelf component with a three-equation system for diagnostic computation of boundary layer temperature and salinity. Ice shelf geometry and global ocean bathymetry have been derived from the RTopo-1 dataset. A global domain with a triangular mesh and a hybrid vertical coordinate is used. To evaluate sub-ice shelf circulation and melt rates for present-day climate, the model is forced with NCEP reanalysis data. Basal mass fluxes are mostly realistic with maximum melt rates in the deepest parts near the grounding lines and marine ice formation in the northern sectors of Ross Ice Shelf and Filchner-Ronne Ice Shelf. Total basal mass loss for the ten largest ice shelves reflects the importance of the Amundsen Sea ice shelves; Getz Ice Shelf is shown to be a major melt water contributor to the Southern Ocean. Despite their modest melt rates, the ``cold water' ice shelves in the Weddell Sea are still substantial sinks of continental ice in Antarctica. Discrepancies between the model and observations can partly be attributed to deficiencies in the forcing data or to (sometimes unavoidable) smoothing of ice shelf and bottom topographies. Article in Journal/Newspaper Amundsen Sea Annals of Glaciology Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Getz Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Ross Ice Shelf Sea ice Southern Ocean Weddell Sea Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Annals of Glaciology 53 60 303 314 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The Finite Element Sea ice Ocean Model (FESOM) has been augmented by an ice-shelf component with a three-equation system for diagnostic computation of boundary layer temperature and salinity. Ice shelf geometry and global ocean bathymetry have been derived from the RTopo-1 dataset. A global domain with a triangular mesh and a hybrid vertical coordinate is used. To evaluate sub-ice shelf circulation and melt rates for present-day climate, the model is forced with NCEP reanalysis data. Basal mass fluxes are mostly realistic with maximum melt rates in the deepest parts near the grounding lines and marine ice formation in the northern sectors of Ross Ice Shelf and Filchner-Ronne Ice Shelf. Total basal mass loss for the ten largest ice shelves reflects the importance of the Amundsen Sea ice shelves; Getz Ice Shelf is shown to be a major melt water contributor to the Southern Ocean. Despite their modest melt rates, the ``cold water' ice shelves in the Weddell Sea are still substantial sinks of continental ice in Antarctica. Discrepancies between the model and observations can partly be attributed to deficiencies in the forcing data or to (sometimes unavoidable) smoothing of ice shelf and bottom topographies. |
format |
Article in Journal/Newspaper |
author |
Timmermann, Ralph Wang, Qiang Hellmer, Hartmut |
spellingShingle |
Timmermann, Ralph Wang, Qiang Hellmer, Hartmut Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
author_facet |
Timmermann, Ralph Wang, Qiang Hellmer, Hartmut |
author_sort |
Timmermann, Ralph |
title |
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
title_short |
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
title_full |
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
title_fullStr |
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
title_full_unstemmed |
Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
title_sort |
ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model |
publisher |
INT GLACIOL SOC |
publishDate |
2012 |
url |
https://epic.awi.de/id/eprint/24946/ https://epic.awi.de/id/eprint/24946/1/Timmermann_et_al_2012__AoG.pdf http://www.igsoc.org/annals/53/60/t60A156.html https://hdl.handle.net/10013/epic.40279 https://hdl.handle.net/10013/epic.40279.d001 |
genre |
Amundsen Sea Annals of Glaciology Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Getz Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Ross Ice Shelf Sea ice Southern Ocean Weddell Sea |
genre_facet |
Amundsen Sea Annals of Glaciology Antarc* Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Getz Ice Shelf Ice Shelf Ice Shelves Ronne Ice Shelf Ross Ice Shelf Sea ice Southern Ocean Weddell Sea |
op_source |
EPIC3Annals of Glaciology, INT GLACIOL SOC, 53(60), ISSN: 0260-3055 |
op_relation |
https://epic.awi.de/id/eprint/24946/1/Timmermann_et_al_2012__AoG.pdf https://hdl.handle.net/10013/epic.40279.d001 Timmermann, R. , Wang, Q. orcid:0000-0002-2704-5394 and Hellmer, H. orcid:0000-0002-9357-9853 (2012) Ice shelf basal melting in a global finite-element sea ice/ice shelf/ocean model , Annals of Glaciology, 53 (60) . doi:10.3189/2012AoG60A156 <https://doi.org/10.3189/2012AoG60A156> , hdl:10013/epic.40279 |
op_doi |
https://doi.org/10.3189/2012AoG60A156 |
container_title |
Annals of Glaciology |
container_volume |
53 |
container_issue |
60 |
container_start_page |
303 |
op_container_end_page |
314 |
_version_ |
1810477734225248256 |