A new tide model for the Antarctic ice shelves and seas
We describe a new tide model for the seas surrounding Antarctica, including the ocean cavities under the floating ice shelves. The model uses data assimilation to improve its fit to available data. Typical peak-to-peak tide ranges on ice shelves are 1-2 m but can exceed 3 m for the Filchner-Ronne an...
Published in: | Annals of Glaciology |
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Online Access: | https://eprints.utas.edu.au/8365/ https://eprints.utas.edu.au/8365/1/Padman_2002.pdf https://doi.org/10.3189/172756402781817752 |
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ftunivtasmania:oai:eprints.utas.edu.au:8365 2023-05-15T13:29:41+02:00 A new tide model for the Antarctic ice shelves and seas Padman, L Fricker, HA Coleman, R Howard, S Erofeeva, L 2002-01-01 application/pdf https://eprints.utas.edu.au/8365/ https://eprints.utas.edu.au/8365/1/Padman_2002.pdf https://doi.org/10.3189/172756402781817752 en eng https://eprints.utas.edu.au/8365/1/Padman_2002.pdf Padman, L, Fricker, HA, Coleman, R, Howard, S and Erofeeva, L 2002 , 'A new tide model for the Antarctic ice shelves and seas' , Annals of Glaciology, vol. 34, no. 1 , pp. 247-254 , doi:10.3189/172756402781817752 <http://dx.doi.org/10.3189/172756402781817752>. cc_utas tide model Antarctica ice shelves satellite altimetry Filchner-Ronne Ice Shelf Ross Ice Shelf Article PeerReviewed 2002 ftunivtasmania https://doi.org/10.3189/172756402781817752 2020-05-30T07:22:12Z We describe a new tide model for the seas surrounding Antarctica, including the ocean cavities under the floating ice shelves. The model uses data assimilation to improve its fit to available data. Typical peak-to-peak tide ranges on ice shelves are 1-2 m but can exceed 3 m for the Filchner-Ronne and Larsen Ice Shelves in the Weddell Sea. Spring tidal ranges are about twice these values. Model performance is judged relative to the ~5-10 cm accuracy that is needed to fully utilize ice-shelf height data that will be collected with the Geoscience Laser Altimeter System, scheduled to be launched on the Ice, Cloud and land Elevation Satellite in late 2002. The model does not yet achieve this level of accuracy except very near the few high-quality tidal records that have been assimilated into the model. Some improvement in predictive skill is expected from increased sophistication of model physics, but we also require better definition of ice-shelf grounding lines and more accurate water-column thickness data in shelf seas and under the ice shelves. Long-duration tide measurements (bottom pressure gauge or global positioning system) in critical datasparse areas, particularly near and on the Filchner-Ronne and Ross Ice Shelves and Pine Island Bay, are required to improve the performance of the data-assimilation model. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Pine Island Pine Island Bay Ronne Ice Shelf Ross Ice Shelf Weddell Sea University of Tasmania: UTas ePrints Antarctic The Antarctic Weddell Sea Ross Ice Shelf Weddell Ronne Ice Shelf ENVELOPE(-61.000,-61.000,-78.500,-78.500) Island Bay ENVELOPE(-109.085,-109.085,59.534,59.534) Pine Island Bay ENVELOPE(-102.000,-102.000,-74.750,-74.750) Annals of Glaciology 34 247 254 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
tide model Antarctica ice shelves satellite altimetry Filchner-Ronne Ice Shelf Ross Ice Shelf |
spellingShingle |
tide model Antarctica ice shelves satellite altimetry Filchner-Ronne Ice Shelf Ross Ice Shelf Padman, L Fricker, HA Coleman, R Howard, S Erofeeva, L A new tide model for the Antarctic ice shelves and seas |
topic_facet |
tide model Antarctica ice shelves satellite altimetry Filchner-Ronne Ice Shelf Ross Ice Shelf |
description |
We describe a new tide model for the seas surrounding Antarctica, including the ocean cavities under the floating ice shelves. The model uses data assimilation to improve its fit to available data. Typical peak-to-peak tide ranges on ice shelves are 1-2 m but can exceed 3 m for the Filchner-Ronne and Larsen Ice Shelves in the Weddell Sea. Spring tidal ranges are about twice these values. Model performance is judged relative to the ~5-10 cm accuracy that is needed to fully utilize ice-shelf height data that will be collected with the Geoscience Laser Altimeter System, scheduled to be launched on the Ice, Cloud and land Elevation Satellite in late 2002. The model does not yet achieve this level of accuracy except very near the few high-quality tidal records that have been assimilated into the model. Some improvement in predictive skill is expected from increased sophistication of model physics, but we also require better definition of ice-shelf grounding lines and more accurate water-column thickness data in shelf seas and under the ice shelves. Long-duration tide measurements (bottom pressure gauge or global positioning system) in critical datasparse areas, particularly near and on the Filchner-Ronne and Ross Ice Shelves and Pine Island Bay, are required to improve the performance of the data-assimilation model. |
format |
Article in Journal/Newspaper |
author |
Padman, L Fricker, HA Coleman, R Howard, S Erofeeva, L |
author_facet |
Padman, L Fricker, HA Coleman, R Howard, S Erofeeva, L |
author_sort |
Padman, L |
title |
A new tide model for the Antarctic ice shelves and seas |
title_short |
A new tide model for the Antarctic ice shelves and seas |
title_full |
A new tide model for the Antarctic ice shelves and seas |
title_fullStr |
A new tide model for the Antarctic ice shelves and seas |
title_full_unstemmed |
A new tide model for the Antarctic ice shelves and seas |
title_sort |
new tide model for the antarctic ice shelves and seas |
publishDate |
2002 |
url |
https://eprints.utas.edu.au/8365/ https://eprints.utas.edu.au/8365/1/Padman_2002.pdf https://doi.org/10.3189/172756402781817752 |
long_lat |
ENVELOPE(-61.000,-61.000,-78.500,-78.500) ENVELOPE(-109.085,-109.085,59.534,59.534) ENVELOPE(-102.000,-102.000,-74.750,-74.750) |
geographic |
Antarctic The Antarctic Weddell Sea Ross Ice Shelf Weddell Ronne Ice Shelf Island Bay Pine Island Bay |
geographic_facet |
Antarctic The Antarctic Weddell Sea Ross Ice Shelf Weddell Ronne Ice Shelf Island Bay Pine Island Bay |
genre |
Annals of Glaciology Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Pine Island Pine Island Bay Ronne Ice Shelf Ross Ice Shelf Weddell Sea |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctica Filchner Ronne Ice Shelf Filchner-Ronne Ice Shelf Ice Shelf Ice Shelves Pine Island Pine Island Bay Ronne Ice Shelf Ross Ice Shelf Weddell Sea |
op_relation |
https://eprints.utas.edu.au/8365/1/Padman_2002.pdf Padman, L, Fricker, HA, Coleman, R, Howard, S and Erofeeva, L 2002 , 'A new tide model for the Antarctic ice shelves and seas' , Annals of Glaciology, vol. 34, no. 1 , pp. 247-254 , doi:10.3189/172756402781817752 <http://dx.doi.org/10.3189/172756402781817752>. |
op_rights |
cc_utas |
op_doi |
https://doi.org/10.3189/172756402781817752 |
container_title |
Annals of Glaciology |
container_volume |
34 |
container_start_page |
247 |
op_container_end_page |
254 |
_version_ |
1766001925051908096 |