Highly variable upper and abyssal overturning cells in the South Atlantic

The Meridional Overturning Circulation (MOC) is a primary mechanism driving oceanic heat redistribution on Earth, thereby affecting Earth's climate and weather. However, the full-depth structure and variability of the MOC are still poorly understood, particularly in the South Atlantic. This stu...

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Main Author: Kersale, Marion (author)
Other Authors: Meinen, Christopher S. (author), Perez, Renellys C. (author), Le Henaff, Matthieu (author), Valla, Daniel (author), Lamont, Tarron (author), Sato, Olga (author), Dong, Shenfu (author), Terre, Thierry (author), van Caspel, Mathias (author), Chidichimo, Maria Paz (author), van den Berg, Marcel (author), Speich, Sabrina (author), Piola, Alberto (author), Campos, Edmo (author), Ansorge, Isabelle (author), Volkov, Denis (author), Lumpkin, Rick (author), Garzoli, Silvia (author)
Format: article
Published: 2020
Online Access:http://hdl.handle.net/11073/19569
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author Kersale, Marion
author2 Meinen, Christopher S.
Perez, Renellys C.
Le Henaff, Matthieu
Valla, Daniel
Lamont, Tarron
Sato, Olga
Dong, Shenfu
Terre, Thierry
van Caspel, Mathias
Chidichimo, Maria Paz
van den Berg, Marcel
Speich, Sabrina
Piola, Alberto
Campos, Edmo
Ansorge, Isabelle
Volkov, Denis
Lumpkin, Rick
Garzoli, Silvia
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
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author
author_facet Kersale, Marion
Meinen, Christopher S.
Perez, Renellys C.
Le Henaff, Matthieu
Valla, Daniel
Lamont, Tarron
Sato, Olga
Dong, Shenfu
Terre, Thierry
van Caspel, Mathias
Chidichimo, Maria Paz
van den Berg, Marcel
Speich, Sabrina
Piola, Alberto
Campos, Edmo
Ansorge, Isabelle
Volkov, Denis
Lumpkin, Rick
Garzoli, Silvia
author_role author
dc.creator.none.fl_str_mv Kersale, Marion
Meinen, Christopher S.
Perez, Renellys C.
Le Henaff, Matthieu
Valla, Daniel
Lamont, Tarron
Sato, Olga
Dong, Shenfu
Terre, Thierry
van Caspel, Mathias
Chidichimo, Maria Paz
van den Berg, Marcel
Speich, Sabrina
Piola, Alberto
Campos, Edmo
Ansorge, Isabelle
Volkov, Denis
Lumpkin, Rick
Garzoli, Silvia
dc.date.none.fl_str_mv 2020-08-09T04:46:31Z
2020-08-09T04:46:31Z
2020-08-05
dc.format.none.fl_str_mv application/pdf
dc.identifier.none.fl_str_mv Kersalé, M., Meinen, C. S., Perez, R. C., Le Hénaff, M., Valla, D., Lamont, T., Sato, O. T., Dong, S., Terre, T., van Caspel, M., Chidichimo, M. P., van den Berg, M., Speich, S., Piola, A. R., Campos, E. J. D., Ansorge, I., Volkov, D. L., Lumpkin, R., & Garzoli, S. L. (2020). Highly variable upper and abyssal overturning cells in the South Atlantic. Science Advances, 6(32), eaba7573. https://doi.org/10.1126/sciadv.aba7573
2375-2548
http://hdl.handle.net/11073/19569
10.1126/sciadv.aba7573
dc.language.none.fl_str_mv en_US
dc.publisher.none.fl_str_mv American Association for the Advancement of Science
dc.relation.none.fl_str_mv https://doi.org/10.1126/sciadv.aba7573
dc.title.none.fl_str_mv Highly variable upper and abyssal overturning cells in the South Atlantic
dc.type.none.fl_str_mv Peer-Reviewed
Published version
info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
description The Meridional Overturning Circulation (MOC) is a primary mechanism driving oceanic heat redistribution on Earth, thereby affecting Earth's climate and weather. However, the full-depth structure and variability of the MOC are still poorly understood, particularly in the South Atlantic. This study presents unique multiyear records of the oceanic volume transport of both the upper (<~3100 meters) and abyssal (>~3100 meters) overturning cells based on daily moored measurements in the South Atlantic at 34.5°S. The vertical structure of the time-mean flows is consistent with the limited historical observations. Both the upper and abyssal cells exhibit a high degree of variability relative to the temporal means at time scales, ranging from a few days to a few weeks. Observed variations in the abyssal flow appear to be largely independent of the flow in the overlying upper cell. No meaningful trends are detected in either cell.
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identifier_str_mv Kersalé, M., Meinen, C. S., Perez, R. C., Le Hénaff, M., Valla, D., Lamont, T., Sato, O. T., Dong, S., Terre, T., van Caspel, M., Chidichimo, M. P., van den Berg, M., Speich, S., Piola, A. R., Campos, E. J. D., Ansorge, I., Volkov, D. L., Lumpkin, R., & Garzoli, S. L. (2020). Highly variable upper and abyssal overturning cells in the South Atlantic. Science Advances, 6(32), eaba7573. https://doi.org/10.1126/sciadv.aba7573
2375-2548
10.1126/sciadv.aba7573
language_invalid_str_mv en_US
network_acronym_str aus
network_name_str aus
oai_identifier_str oai:repository.aus.edu:11073/19569
publishDate 2020
publisher.none.fl_str_mv American Association for the Advancement of Science
repository.mail.fl_str_mv
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spelling Highly variable upper and abyssal overturning cells in the South AtlanticKersale, MarionMeinen, Christopher S.Perez, Renellys C.Le Henaff, MatthieuValla, DanielLamont, TarronSato, OlgaDong, ShenfuTerre, Thierryvan Caspel, MathiasChidichimo, Maria Pazvan den Berg, MarcelSpeich, SabrinaPiola, AlbertoCampos, EdmoAnsorge, IsabelleVolkov, DenisLumpkin, RickGarzoli, SilviaThe Meridional Overturning Circulation (MOC) is a primary mechanism driving oceanic heat redistribution on Earth, thereby affecting Earth's climate and weather. However, the full-depth structure and variability of the MOC are still poorly understood, particularly in the South Atlantic. This study presents unique multiyear records of the oceanic volume transport of both the upper (<~3100 meters) and abyssal (>~3100 meters) overturning cells based on daily moored measurements in the South Atlantic at 34.5°S. The vertical structure of the time-mean flows is consistent with the limited historical observations. Both the upper and abyssal cells exhibit a high degree of variability relative to the temporal means at time scales, ranging from a few days to a few weeks. Observed variations in the abyssal flow appear to be largely independent of the flow in the overlying upper cell. No meaningful trends are detected in either cell.American Association for the Advancement of Science2020-08-09T04:46:31Z2020-08-09T04:46:31Z2020-08-05Peer-ReviewedPublished versioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfKersalé, M., Meinen, C. S., Perez, R. C., Le Hénaff, M., Valla, D., Lamont, T., Sato, O. T., Dong, S., Terre, T., van Caspel, M., Chidichimo, M. P., van den Berg, M., Speich, S., Piola, A. R., Campos, E. J. D., Ansorge, I., Volkov, D. L., Lumpkin, R., & Garzoli, S. L. (2020). Highly variable upper and abyssal overturning cells in the South Atlantic. Science Advances, 6(32), eaba7573. https://doi.org/10.1126/sciadv.aba75732375-2548http://hdl.handle.net/11073/1956910.1126/sciadv.aba7573en_UShttps://doi.org/10.1126/sciadv.aba7573oai:repository.aus.edu:11073/195692024-08-22T12:00:11Z
spellingShingle Highly variable upper and abyssal overturning cells in the South Atlantic
Kersale, Marion
status_str publishedVersion
title Highly variable upper and abyssal overturning cells in the South Atlantic
title_full Highly variable upper and abyssal overturning cells in the South Atlantic
title_fullStr Highly variable upper and abyssal overturning cells in the South Atlantic
title_full_unstemmed Highly variable upper and abyssal overturning cells in the South Atlantic
title_short Highly variable upper and abyssal overturning cells in the South Atlantic
title_sort Highly variable upper and abyssal overturning cells in the South Atlantic
url http://hdl.handle.net/11073/19569