Impact of Antarctic ice shelf melting on sea ice and deep ocean properties
An approximation of Antarctica's rocky and icy coastline normally forms the southern boundary in global climate models. Such a configuration neglects extensive ice shelf areas where ocean-ice interaction initiates a net freshwater flux to the continental shelf at least equal to coastal precepit...
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Online Access: | https://epic.awi.de/id/eprint/9213/ https://epic.awi.de/id/eprint/9213/1/Hel2003g.pdf https://doi.org/10.1029/2004GL019506 https://hdl.handle.net/10013/epic.19724 https://hdl.handle.net/10013/epic.19724.d001 |
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ftawi:oai:epic.awi.de:9213 2023-09-05T13:15:02+02:00 Impact of Antarctic ice shelf melting on sea ice and deep ocean properties Hellmer, Hartmut 2004 application/pdf https://epic.awi.de/id/eprint/9213/ https://epic.awi.de/id/eprint/9213/1/Hel2003g.pdf https://doi.org/10.1029/2004GL019506 https://hdl.handle.net/10013/epic.19724 https://hdl.handle.net/10013/epic.19724.d001 unknown https://epic.awi.de/id/eprint/9213/1/Hel2003g.pdf https://hdl.handle.net/10013/epic.19724.d001 Hellmer, H. orcid:0000-0002-9357-9853 (2004) Impact of Antarctic ice shelf melting on sea ice and deep ocean properties , Geophysical research letters, Vol. 31, No. 10, L10307 . doi:10.1029/2004GL019506 <https://doi.org/10.1029/2004GL019506> , hdl:10013/epic.19724 EPIC3Geophysical research letters, Vol. 31, No. 10, L10307, ISSN: 0094-8276 Article isiRev 2004 ftawi https://doi.org/10.1029/2004GL019506 2023-08-22T19:47:56Z An approximation of Antarctica's rocky and icy coastline normally forms the southern boundary in global climate models. Such a configuration neglects extensive ice shelf areas where ocean-ice interaction initiates a net freshwater flux to the continental shelf at least equal to coastal precepitation. The results of a numerical model for the Southern Ocean using two contrasting configurations with and without caverns beneath major Antarctic ice shelves are compared. They show that the freshwater flux due to deep basal melting significantly stabilizes the shelf water column in front of an ice shelf as well as downstream due to advection by the coastal current. If the freshwater from the cavern is absent, sea ice is thinner, shelf waters are warmer and saltier, and Southern Ocean deep water export is stronger. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean Geophysical Research Letters 31 10 n/a n/a |
institution |
Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
An approximation of Antarctica's rocky and icy coastline normally forms the southern boundary in global climate models. Such a configuration neglects extensive ice shelf areas where ocean-ice interaction initiates a net freshwater flux to the continental shelf at least equal to coastal precepitation. The results of a numerical model for the Southern Ocean using two contrasting configurations with and without caverns beneath major Antarctic ice shelves are compared. They show that the freshwater flux due to deep basal melting significantly stabilizes the shelf water column in front of an ice shelf as well as downstream due to advection by the coastal current. If the freshwater from the cavern is absent, sea ice is thinner, shelf waters are warmer and saltier, and Southern Ocean deep water export is stronger. |
format |
Article in Journal/Newspaper |
author |
Hellmer, Hartmut |
spellingShingle |
Hellmer, Hartmut Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
author_facet |
Hellmer, Hartmut |
author_sort |
Hellmer, Hartmut |
title |
Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
title_short |
Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
title_full |
Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
title_fullStr |
Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
title_full_unstemmed |
Impact of Antarctic ice shelf melting on sea ice and deep ocean properties |
title_sort |
impact of antarctic ice shelf melting on sea ice and deep ocean properties |
publishDate |
2004 |
url |
https://epic.awi.de/id/eprint/9213/ https://epic.awi.de/id/eprint/9213/1/Hel2003g.pdf https://doi.org/10.1029/2004GL019506 https://hdl.handle.net/10013/epic.19724 https://hdl.handle.net/10013/epic.19724.d001 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Southern Ocean |
op_source |
EPIC3Geophysical research letters, Vol. 31, No. 10, L10307, ISSN: 0094-8276 |
op_relation |
https://epic.awi.de/id/eprint/9213/1/Hel2003g.pdf https://hdl.handle.net/10013/epic.19724.d001 Hellmer, H. orcid:0000-0002-9357-9853 (2004) Impact of Antarctic ice shelf melting on sea ice and deep ocean properties , Geophysical research letters, Vol. 31, No. 10, L10307 . doi:10.1029/2004GL019506 <https://doi.org/10.1029/2004GL019506> , hdl:10013/epic.19724 |
op_doi |
https://doi.org/10.1029/2004GL019506 |
container_title |
Geophysical Research Letters |
container_volume |
31 |
container_issue |
10 |
container_start_page |
n/a |
op_container_end_page |
n/a |
_version_ |
1776196892384821248 |