Warm surface waters increase Antarctic ice shelf melt and delay dense water formation
Melting ice shelves around Antarctica control the massive input of freshwater into the ocean and play an intricate role in global heat redistribution. The Amery Ice Shelf regulates wintertime sea-ice growth and dense shelf water formation. We investigated the role of warm Antarctic Surface Water in...
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Online Access: | http://hdl.handle.net/2115/86487 https://doi.org/10.1038/s43247-022-00456-z |
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fthokunivhus:oai:eprints.lib.hokudai.ac.jp:2115/86487 2023-05-15T13:22:01+02:00 Warm surface waters increase Antarctic ice shelf melt and delay dense water formation Aoki, Shigeru Takahashi, Tomoki Yamazaki, Kaihe Hirano, Daisuke Ono, Kazuya Kusahara, Kazuya Tamura, Takeshi Williams, Guy D. http://hdl.handle.net/2115/86487 https://doi.org/10.1038/s43247-022-00456-z eng eng Springer Nature http://hdl.handle.net/2115/86487 Communications Earth & Environment, 3: 142 http://dx.doi.org/10.1038/s43247-022-00456-z https://creativecommons.org/licenses/by/4.0/ CC-BY 452 article fthokunivhus https://doi.org/10.1038/s43247-022-00456-z 2022-11-18T01:07:06Z Melting ice shelves around Antarctica control the massive input of freshwater into the ocean and play an intricate role in global heat redistribution. The Amery Ice Shelf regulates wintertime sea-ice growth and dense shelf water formation. We investigated the role of warm Antarctic Surface Water in ice shelf melting and its impact on dense shelf water. Here we show that the coastal ocean in summer 2016/17 was almost sea-ice free, leading to higher surface water temperatures. The glacial meltwater fraction in surface water was the highest on record, hypothesised to be attributable to anomalous ice shelf melting. The excess heat and freshwater in early 2017 delayed the seasonal evolution of dense shelf water. Focused on ice shelf melting at depth, the importance and impacts of warming surface waters has been overlooked. In a warming climate, increased surface water heating will reduce coastal sea-ice production and potentially Antarctic Bottom Water formation. Excessively warm and fresh surface water along the Amery Ice Shelf, Antarctica, in 2017 led to more ice melt and delayed dense water formation, according to analyses of in situ observations. Article in Journal/Newspaper Amery Ice Shelf Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Sea ice Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) Antarctic Communications Earth & Environment 3 1 |
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Open Polar |
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Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP) |
op_collection_id |
fthokunivhus |
language |
English |
topic |
452 |
spellingShingle |
452 Aoki, Shigeru Takahashi, Tomoki Yamazaki, Kaihe Hirano, Daisuke Ono, Kazuya Kusahara, Kazuya Tamura, Takeshi Williams, Guy D. Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
topic_facet |
452 |
description |
Melting ice shelves around Antarctica control the massive input of freshwater into the ocean and play an intricate role in global heat redistribution. The Amery Ice Shelf regulates wintertime sea-ice growth and dense shelf water formation. We investigated the role of warm Antarctic Surface Water in ice shelf melting and its impact on dense shelf water. Here we show that the coastal ocean in summer 2016/17 was almost sea-ice free, leading to higher surface water temperatures. The glacial meltwater fraction in surface water was the highest on record, hypothesised to be attributable to anomalous ice shelf melting. The excess heat and freshwater in early 2017 delayed the seasonal evolution of dense shelf water. Focused on ice shelf melting at depth, the importance and impacts of warming surface waters has been overlooked. In a warming climate, increased surface water heating will reduce coastal sea-ice production and potentially Antarctic Bottom Water formation. Excessively warm and fresh surface water along the Amery Ice Shelf, Antarctica, in 2017 led to more ice melt and delayed dense water formation, according to analyses of in situ observations. |
format |
Article in Journal/Newspaper |
author |
Aoki, Shigeru Takahashi, Tomoki Yamazaki, Kaihe Hirano, Daisuke Ono, Kazuya Kusahara, Kazuya Tamura, Takeshi Williams, Guy D. |
author_facet |
Aoki, Shigeru Takahashi, Tomoki Yamazaki, Kaihe Hirano, Daisuke Ono, Kazuya Kusahara, Kazuya Tamura, Takeshi Williams, Guy D. |
author_sort |
Aoki, Shigeru |
title |
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
title_short |
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
title_full |
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
title_fullStr |
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
title_full_unstemmed |
Warm surface waters increase Antarctic ice shelf melt and delay dense water formation |
title_sort |
warm surface waters increase antarctic ice shelf melt and delay dense water formation |
publisher |
Springer Nature |
url |
http://hdl.handle.net/2115/86487 https://doi.org/10.1038/s43247-022-00456-z |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) |
geographic |
Amery Amery Ice Shelf Antarctic |
geographic_facet |
Amery Amery Ice Shelf Antarctic |
genre |
Amery Ice Shelf Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Sea ice |
genre_facet |
Amery Ice Shelf Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Sea ice |
op_relation |
http://hdl.handle.net/2115/86487 Communications Earth & Environment, 3: 142 http://dx.doi.org/10.1038/s43247-022-00456-z |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-022-00456-z |
container_title |
Communications Earth & Environment |
container_volume |
3 |
container_issue |
1 |
_version_ |
1766362868655063040 |