Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study
Abstract Recent observations indicate that two cryospheric components, namely the Antarctic sea ice and ice shelf over the Southern Ocean, have been changing over the decades. Here we analyze results from an ocean–sea ice–ice shelf model to examine variability in the Antarctic sea-ice extent and ice...
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crioppubl:10.1088/1748-9326/ac0de0 2024-09-30T14:25:59+00:00 Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study Kusahara, Kazuya the Integrated Research Program for Advancing Climate Models Japan Society for the Promotion of Science 2021 http://dx.doi.org/10.1088/1748-9326/ac0de0 https://iopscience.iop.org/article/10.1088/1748-9326/ac0de0 https://iopscience.iop.org/article/10.1088/1748-9326/ac0de0/pdf unknown IOP Publishing http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining Environmental Research Letters volume 16, issue 7, page 074042 ISSN 1748-9326 journal-article 2021 crioppubl https://doi.org/10.1088/1748-9326/ac0de0 2024-09-02T04:14:29Z Abstract Recent observations indicate that two cryospheric components, namely the Antarctic sea ice and ice shelf over the Southern Ocean, have been changing over the decades. Here we analyze results from an ocean–sea ice–ice shelf model to examine variability in the Antarctic sea-ice extent and ice-shelf basal melting. The model reproduces seasonal and interannual variability in the Antarctic sea-ice extent and demonstrates that summertime ice-shelf basal melting is closely anti-correlated with the sea-ice extent anomaly. For example, the unprecedented minimum of the Antarctic sea-ice extent in the 2016 spring was accompanied by a substantial increase in the Antarctic ice-shelf melting in the model. Detailed analysis of Antarctic coastal water masses flowing into the ice-shelf cavities illustrates the physical linkage in the strong anti-correlation. This study suggests that the Antarctic summer sea-ice extent in the regions where the sea-ice edge approaches the Antarctic coastline can be a proxy for Antarctic coastal water masses and subsequent ice-shelf basal melting. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Sea ice Southern Ocean IOP Publishing Antarctic Southern Ocean The Antarctic Environmental Research Letters 16 7 074042 |
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Abstract Recent observations indicate that two cryospheric components, namely the Antarctic sea ice and ice shelf over the Southern Ocean, have been changing over the decades. Here we analyze results from an ocean–sea ice–ice shelf model to examine variability in the Antarctic sea-ice extent and ice-shelf basal melting. The model reproduces seasonal and interannual variability in the Antarctic sea-ice extent and demonstrates that summertime ice-shelf basal melting is closely anti-correlated with the sea-ice extent anomaly. For example, the unprecedented minimum of the Antarctic sea-ice extent in the 2016 spring was accompanied by a substantial increase in the Antarctic ice-shelf melting in the model. Detailed analysis of Antarctic coastal water masses flowing into the ice-shelf cavities illustrates the physical linkage in the strong anti-correlation. This study suggests that the Antarctic summer sea-ice extent in the regions where the sea-ice edge approaches the Antarctic coastline can be a proxy for Antarctic coastal water masses and subsequent ice-shelf basal melting. |
author2 |
the Integrated Research Program for Advancing Climate Models Japan Society for the Promotion of Science |
format |
Article in Journal/Newspaper |
author |
Kusahara, Kazuya |
spellingShingle |
Kusahara, Kazuya Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
author_facet |
Kusahara, Kazuya |
author_sort |
Kusahara, Kazuya |
title |
Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
title_short |
Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
title_full |
Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
title_fullStr |
Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
title_full_unstemmed |
Summertime linkage between Antarctic sea-ice extent and ice-shelf basal melting through Antarctic coastal water masses’ variability: a circumpolar Southern Ocean model study |
title_sort |
summertime linkage between antarctic sea-ice extent and ice-shelf basal melting through antarctic coastal water masses’ variability: a circumpolar southern ocean model study |
publisher |
IOP Publishing |
publishDate |
2021 |
url |
http://dx.doi.org/10.1088/1748-9326/ac0de0 https://iopscience.iop.org/article/10.1088/1748-9326/ac0de0 https://iopscience.iop.org/article/10.1088/1748-9326/ac0de0/pdf |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Shelf Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Shelf Sea ice Southern Ocean |
op_source |
Environmental Research Letters volume 16, issue 7, page 074042 ISSN 1748-9326 |
op_rights |
http://creativecommons.org/licenses/by/4.0 https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1748-9326/ac0de0 |
container_title |
Environmental Research Letters |
container_volume |
16 |
container_issue |
7 |
container_start_page |
074042 |
_version_ |
1811646535487717376 |