Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves
Melting of West Antarctic ice shelves is enhanced by Circumpolar Deep Water (CDW) intruding onto the Amundsen and Bellingshausen Seas (ABS) continental shelves. Despite existing studies of cross-shelf and on-shelf CDW transports, CDW pathways onto the ABS originating from further offshore have never...
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ftpubmed:oai:pubmedcentral.nih.gov:6109117 2023-05-15T13:51:43+02:00 Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves Nakayama, Yoshihiro Menemenlis, Dimitris Zhang, Hong Schodlok, Michael Rignot, Eric 2018-08-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109117/ http://www.ncbi.nlm.nih.gov/pubmed/30143637 https://doi.org/10.1038/s41467-018-05813-1 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109117/ http://www.ncbi.nlm.nih.gov/pubmed/30143637 http://dx.doi.org/10.1038/s41467-018-05813-1 © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41467-018-05813-1 2018-09-02T00:50:49Z Melting of West Antarctic ice shelves is enhanced by Circumpolar Deep Water (CDW) intruding onto the Amundsen and Bellingshausen Seas (ABS) continental shelves. Despite existing studies of cross-shelf and on-shelf CDW transports, CDW pathways onto the ABS originating from further offshore have never been investigated. Here, we investigate CDW pathways onto the ABS using a regional ocean model. Simulated CDW tracers from a zonal section across 67°S (S04P) circulate along the Antarctic Circumpolar Current (ACC) and Ross Gyre (RG) and travel into ABS continental shelf after 3–5 years, but source locations are shifted westward by ~900 km along S04P in 2001–2006 compared to 2009–2014. We find that simulated on- and off-shelf CDW is ~0.1–0.2 °C warmer in the 2009–2014 case than in the 2001–2006 case together with changes in simulated ocean circulation. These differences are primarily caused by lateral, rather than surface, boundary conditions, implying that large-scale atmospheric and ocean circulations are able to control CDW pathways and thus off- and on-shelf CDW properties. Text Antarc* Antarctic Bellingshausen Sea Ice Shelves PubMed Central (PMC) Antarctic Bellingshausen Sea The Antarctic Nature Communications 9 1 |
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Article Nakayama, Yoshihiro Menemenlis, Dimitris Zhang, Hong Schodlok, Michael Rignot, Eric Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
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Article |
description |
Melting of West Antarctic ice shelves is enhanced by Circumpolar Deep Water (CDW) intruding onto the Amundsen and Bellingshausen Seas (ABS) continental shelves. Despite existing studies of cross-shelf and on-shelf CDW transports, CDW pathways onto the ABS originating from further offshore have never been investigated. Here, we investigate CDW pathways onto the ABS using a regional ocean model. Simulated CDW tracers from a zonal section across 67°S (S04P) circulate along the Antarctic Circumpolar Current (ACC) and Ross Gyre (RG) and travel into ABS continental shelf after 3–5 years, but source locations are shifted westward by ~900 km along S04P in 2001–2006 compared to 2009–2014. We find that simulated on- and off-shelf CDW is ~0.1–0.2 °C warmer in the 2009–2014 case than in the 2001–2006 case together with changes in simulated ocean circulation. These differences are primarily caused by lateral, rather than surface, boundary conditions, implying that large-scale atmospheric and ocean circulations are able to control CDW pathways and thus off- and on-shelf CDW properties. |
format |
Text |
author |
Nakayama, Yoshihiro Menemenlis, Dimitris Zhang, Hong Schodlok, Michael Rignot, Eric |
author_facet |
Nakayama, Yoshihiro Menemenlis, Dimitris Zhang, Hong Schodlok, Michael Rignot, Eric |
author_sort |
Nakayama, Yoshihiro |
title |
Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
title_short |
Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
title_full |
Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
title_fullStr |
Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
title_full_unstemmed |
Origin of Circumpolar Deep Water intruding onto the Amundsen and Bellingshausen Sea continental shelves |
title_sort |
origin of circumpolar deep water intruding onto the amundsen and bellingshausen sea continental shelves |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109117/ http://www.ncbi.nlm.nih.gov/pubmed/30143637 https://doi.org/10.1038/s41467-018-05813-1 |
geographic |
Antarctic Bellingshausen Sea The Antarctic |
geographic_facet |
Antarctic Bellingshausen Sea The Antarctic |
genre |
Antarc* Antarctic Bellingshausen Sea Ice Shelves |
genre_facet |
Antarc* Antarctic Bellingshausen Sea Ice Shelves |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109117/ http://www.ncbi.nlm.nih.gov/pubmed/30143637 http://dx.doi.org/10.1038/s41467-018-05813-1 |
op_rights |
© The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-018-05813-1 |
container_title |
Nature Communications |
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9 |
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1 |
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