Antarctic ice shelf melting in the 21st century a model study
It has been proposed that huge ice shelves might face less basal melting in a warmer climate due to less sea ice formation on the continental shelf and thus a reduced density gradient between ice shelf front and the cavern interior. We present the results of a 100-year simulation with BRIOS-2.2 forc...
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ftawi:oai:epic.awi.de:19258 2023-05-15T13:39:47+02:00 Antarctic ice shelf melting in the 21st century a model study Hellmer, Hartmut Kauker, Frank Timmermann, Ralph 2008 https://epic.awi.de/id/eprint/19258/ https://hdl.handle.net/10013/epic.31018 unknown Hellmer, H. orcid:0000-0002-9357-9853 , Kauker, F. orcid:0000-0002-7976-3005 and Timmermann, R. (2008) Antarctic ice shelf melting in the 21st century a model study , Forum for Research into Ice Shelf Processes (FRISP), 18. - 20. Sep. 2008, Losehill, Derbyshire, U.K. . hdl:10013/epic.31018 EPIC3Forum for Research into Ice Shelf Processes (FRISP), 18. - 20. Sep. 2008, Losehill, Derbyshire, U.K. Conference notRev 2008 ftawi 2021-12-24T15:32:55Z It has been proposed that huge ice shelves might face less basal melting in a warmer climate due to less sea ice formation on the continental shelf and thus a reduced density gradient between ice shelf front and the cavern interior. We present the results of a 100-year simulation with BRIOS-2.2 forced with the ECHAM5-MPIOM output for the IPCC-A1B scenario. The results show that basal melting enhances for all ice shelves, but the enhancement is minor for huge ice shelves like Filchner-Ronne and Ross while the smaller ones like Fimbulisen and Getz are threatened by an up to 100% increase. Further analysis reveals that a decrease in salinity (due to a reduced sea ice cover) in parallel to slightly higher temperatures on the broad continental shelves are responsible for a mitigated response of the huge ice shelves to climate warming. In contrast, minor decreases in salinity in combination with increased near-bottom temperatures on the narrow continental shelves cause smaller ice shelves to be highly vulnerable to a warmer climate. Conference Object Antarc* Antarctic Ice Shelf Ice Shelves Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Getz ENVELOPE(-145.217,-145.217,-76.550,-76.550) Fimbulisen ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
It has been proposed that huge ice shelves might face less basal melting in a warmer climate due to less sea ice formation on the continental shelf and thus a reduced density gradient between ice shelf front and the cavern interior. We present the results of a 100-year simulation with BRIOS-2.2 forced with the ECHAM5-MPIOM output for the IPCC-A1B scenario. The results show that basal melting enhances for all ice shelves, but the enhancement is minor for huge ice shelves like Filchner-Ronne and Ross while the smaller ones like Fimbulisen and Getz are threatened by an up to 100% increase. Further analysis reveals that a decrease in salinity (due to a reduced sea ice cover) in parallel to slightly higher temperatures on the broad continental shelves are responsible for a mitigated response of the huge ice shelves to climate warming. In contrast, minor decreases in salinity in combination with increased near-bottom temperatures on the narrow continental shelves cause smaller ice shelves to be highly vulnerable to a warmer climate. |
format |
Conference Object |
author |
Hellmer, Hartmut Kauker, Frank Timmermann, Ralph |
spellingShingle |
Hellmer, Hartmut Kauker, Frank Timmermann, Ralph Antarctic ice shelf melting in the 21st century a model study |
author_facet |
Hellmer, Hartmut Kauker, Frank Timmermann, Ralph |
author_sort |
Hellmer, Hartmut |
title |
Antarctic ice shelf melting in the 21st century a model study |
title_short |
Antarctic ice shelf melting in the 21st century a model study |
title_full |
Antarctic ice shelf melting in the 21st century a model study |
title_fullStr |
Antarctic ice shelf melting in the 21st century a model study |
title_full_unstemmed |
Antarctic ice shelf melting in the 21st century a model study |
title_sort |
antarctic ice shelf melting in the 21st century a model study |
publishDate |
2008 |
url |
https://epic.awi.de/id/eprint/19258/ https://hdl.handle.net/10013/epic.31018 |
long_lat |
ENVELOPE(-145.217,-145.217,-76.550,-76.550) ENVELOPE(-0.500,-0.500,-70.750,-70.750) |
geographic |
Antarctic Getz Fimbulisen |
geographic_facet |
Antarctic Getz Fimbulisen |
genre |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice |
genre_facet |
Antarc* Antarctic Ice Shelf Ice Shelves Sea ice |
op_source |
EPIC3Forum for Research into Ice Shelf Processes (FRISP), 18. - 20. Sep. 2008, Losehill, Derbyshire, U.K. |
op_relation |
Hellmer, H. orcid:0000-0002-9357-9853 , Kauker, F. orcid:0000-0002-7976-3005 and Timmermann, R. (2008) Antarctic ice shelf melting in the 21st century a model study , Forum for Research into Ice Shelf Processes (FRISP), 18. - 20. Sep. 2008, Losehill, Derbyshire, U.K. . hdl:10013/epic.31018 |
_version_ |
1766124618287939584 |