Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica
Using an ice-ocean coupled model with fine horizontal resolution around East Antarctica, sea ice production and dense shelf water (DSW) formation in coastal polynyas are investigated. The model reproduces well the locations of coastal polynyas and the high sea ice production there. DSW is formed ove...
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ftunivtasecite:oai:ecite.utas.edu.au:71362 2023-05-15T14:02:30+02:00 Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica Kusahara, K Hasumi, H Tamura, T 2010 application/pdf https://doi.org/10.1029/2010JC006133 http://ecite.utas.edu.au/71362 en eng Amer Geophysical Union http://ecite.utas.edu.au/71362/1/71362 - Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica.pdf http://dx.doi.org/10.1029/2010JC006133 Kusahara, K and Hasumi, H and Tamura, T, Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica, Journal of Geophysical Research-Space Physics, 115, (C10006) pp. 1-10. ISSN 0148-0227 (2010) [Refereed Article] http://ecite.utas.edu.au/71362 Earth Sciences Oceanography Physical Oceanography Refereed Article PeerReviewed 2010 ftunivtasecite https://doi.org/10.1029/2010JC006133 2019-12-13T21:38:51Z Using an ice-ocean coupled model with fine horizontal resolution around East Antarctica, sea ice production and dense shelf water (DSW) formation in coastal polynyas are investigated. The model reproduces well the locations of coastal polynyas and the high sea ice production there. DSW is formed over the continental shelves under a number of coastal polynyas. A threshold density, beyond which net production of DSW takes place, is largely different among coastal polynyas. The densest and most vigorous DSW formation occurs in the Cape Darnley and Mertz-Ninnis Glacier polynyas followed by somewhat less but still significant DSW formation in the Prydz-Barrier and Vincennes polynyas. Assuming mixing of the DSW outflowing across the shelf break with typical Modified Circumpolar Deep Water over the continental slope, the maximum possible formation rate of Antarctic Bottom Water (AABW) is estimated to be 7.58 Sv around East Antarctica between 60E and 150E, with the Cape Darnley and Mertz-Ninnis Glacier polynyas exhibiting the most active formation rates of 2.13 and 1.97 Sv, respectively. From a series of numerical experiments, it is found that the treatment of coastline and grounded icebergs has a large impact on both sea ice production and formation of DSW and AABW. Article in Journal/Newspaper Antarc* Antarctic Antarctica Antarctica Journal East Antarctica Iceberg* Ninnis Glacier Sea ice eCite UTAS (University of Tasmania) Antarctic Cape Darnley ENVELOPE(69.567,69.567,-67.738,-67.738) Darnley ENVELOPE(69.717,69.717,-67.717,-67.717) East Antarctica Ninnis Glacier ENVELOPE(-68.511,-68.511,81.165,81.165) Journal of Geophysical Research: Oceans 115 C10 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Physical Oceanography |
spellingShingle |
Earth Sciences Oceanography Physical Oceanography Kusahara, K Hasumi, H Tamura, T Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
topic_facet |
Earth Sciences Oceanography Physical Oceanography |
description |
Using an ice-ocean coupled model with fine horizontal resolution around East Antarctica, sea ice production and dense shelf water (DSW) formation in coastal polynyas are investigated. The model reproduces well the locations of coastal polynyas and the high sea ice production there. DSW is formed over the continental shelves under a number of coastal polynyas. A threshold density, beyond which net production of DSW takes place, is largely different among coastal polynyas. The densest and most vigorous DSW formation occurs in the Cape Darnley and Mertz-Ninnis Glacier polynyas followed by somewhat less but still significant DSW formation in the Prydz-Barrier and Vincennes polynyas. Assuming mixing of the DSW outflowing across the shelf break with typical Modified Circumpolar Deep Water over the continental slope, the maximum possible formation rate of Antarctic Bottom Water (AABW) is estimated to be 7.58 Sv around East Antarctica between 60E and 150E, with the Cape Darnley and Mertz-Ninnis Glacier polynyas exhibiting the most active formation rates of 2.13 and 1.97 Sv, respectively. From a series of numerical experiments, it is found that the treatment of coastline and grounded icebergs has a large impact on both sea ice production and formation of DSW and AABW. |
format |
Article in Journal/Newspaper |
author |
Kusahara, K Hasumi, H Tamura, T |
author_facet |
Kusahara, K Hasumi, H Tamura, T |
author_sort |
Kusahara, K |
title |
Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
title_short |
Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
title_full |
Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
title_fullStr |
Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
title_full_unstemmed |
Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica |
title_sort |
modeling sea ice production and dense shelf water formation in coastal polynyas around east antarctica |
publisher |
Amer Geophysical Union |
publishDate |
2010 |
url |
https://doi.org/10.1029/2010JC006133 http://ecite.utas.edu.au/71362 |
long_lat |
ENVELOPE(69.567,69.567,-67.738,-67.738) ENVELOPE(69.717,69.717,-67.717,-67.717) ENVELOPE(-68.511,-68.511,81.165,81.165) |
geographic |
Antarctic Cape Darnley Darnley East Antarctica Ninnis Glacier |
geographic_facet |
Antarctic Cape Darnley Darnley East Antarctica Ninnis Glacier |
genre |
Antarc* Antarctic Antarctica Antarctica Journal East Antarctica Iceberg* Ninnis Glacier Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Antarctica Journal East Antarctica Iceberg* Ninnis Glacier Sea ice |
op_relation |
http://ecite.utas.edu.au/71362/1/71362 - Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica.pdf http://dx.doi.org/10.1029/2010JC006133 Kusahara, K and Hasumi, H and Tamura, T, Modeling sea ice production and dense shelf water formation in coastal polynyas around East Antarctica, Journal of Geophysical Research-Space Physics, 115, (C10006) pp. 1-10. ISSN 0148-0227 (2010) [Refereed Article] http://ecite.utas.edu.au/71362 |
op_doi |
https://doi.org/10.1029/2010JC006133 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
115 |
container_issue |
C10 |
_version_ |
1766272769498021888 |