Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades
The circulation in the Atlantic Ocean is marked by the complex system of pathways of the Atlantic Meridional Overturning Circulation (AMOC). These currents change meridionally due to the interaction with nearby water masses. Hydrographic data provide the opportunity to characterize these currents fo...
Published in: | Ocean Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2023
|
Subjects: | |
Online Access: | https://doi.org/10.5194/os-19-1009-2023 https://noa.gwlb.de/receive/cop_mods_00067606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066056/os-19-1009-2023.pdf https://os.copernicus.org/articles/19/1009/2023/os-19-1009-2023.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00067606 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00067606 2023-07-30T03:56:48+02:00 Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades Caínzos, Verónica Pérez-Hernández, M. Dolores Santana-Toscano, Daniel Arumí-Planas, Cristina Hernández-Guerra, Alonso 2023-07 electronic https://doi.org/10.5194/os-19-1009-2023 https://noa.gwlb.de/receive/cop_mods_00067606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066056/os-19-1009-2023.pdf https://os.copernicus.org/articles/19/1009/2023/os-19-1009-2023.pdf eng eng Copernicus Publications Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-19-1009-2023 https://noa.gwlb.de/receive/cop_mods_00067606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066056/os-19-1009-2023.pdf https://os.copernicus.org/articles/19/1009/2023/os-19-1009-2023.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2023 ftnonlinearchiv https://doi.org/10.5194/os-19-1009-2023 2023-07-09T23:19:02Z The circulation in the Atlantic Ocean is marked by the complex system of pathways of the Atlantic Meridional Overturning Circulation (AMOC). These currents change meridionally due to the interaction with nearby water masses. Hydrographic data provide the opportunity to characterize these currents for the whole water column with high-resolution data over the last 30 years. Moreover, inverse methods enable the quantification of absolute zonal transports across these sections, determining the strength of each current at a certain latitude in terms of mass, heat, and freshwater, as well as their transport-weighted temperature and salinity. Generally, no changes can be found among decades for each of the currents in terms of transport or their properties. In the South Atlantic, the circulation describes the subtropical gyre affected by several recirculations. There are nearly 61 Sv entering from the Southern and Indian oceans at 45∘ S. The South Atlantic subtropical gyre exports 17.0 ± 1.2 Sv and around 1 PW northward via the North Brazil Current, as well as −55 Sv southward at 45∘ S into the Antarctic Circumpolar Current. In the North Atlantic, most of the transport is advected northward via the western boundary currents, which reduce their strength as they take part in convection processes in the subpolar North Atlantic, also reflected in the northward progress of mass and heat transport. Deep layers carry waters southward along the western boundary, maintaining similar values of mass and heat transport until the separation into an eastern branch crossing the mid-Atlantic Ridge in the South Atlantic. Abyssal waters originating in the Southern Ocean are distributed along the South Atlantic mainly through its western subbasin, flowing northward up to 24.5∘ N, subjected to an increasing trend in their temperature with time. Article in Journal/Newspaper Antarc* Antarctic North Atlantic Southern Ocean Niedersächsisches Online-Archiv NOA Antarctic Indian Mid-Atlantic Ridge Southern Ocean The Antarctic Ocean Science 19 4 1009 1045 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Caínzos, Verónica Pérez-Hernández, M. Dolores Santana-Toscano, Daniel Arumí-Planas, Cristina Hernández-Guerra, Alonso Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
topic_facet |
article Verlagsveröffentlichung |
description |
The circulation in the Atlantic Ocean is marked by the complex system of pathways of the Atlantic Meridional Overturning Circulation (AMOC). These currents change meridionally due to the interaction with nearby water masses. Hydrographic data provide the opportunity to characterize these currents for the whole water column with high-resolution data over the last 30 years. Moreover, inverse methods enable the quantification of absolute zonal transports across these sections, determining the strength of each current at a certain latitude in terms of mass, heat, and freshwater, as well as their transport-weighted temperature and salinity. Generally, no changes can be found among decades for each of the currents in terms of transport or their properties. In the South Atlantic, the circulation describes the subtropical gyre affected by several recirculations. There are nearly 61 Sv entering from the Southern and Indian oceans at 45∘ S. The South Atlantic subtropical gyre exports 17.0 ± 1.2 Sv and around 1 PW northward via the North Brazil Current, as well as −55 Sv southward at 45∘ S into the Antarctic Circumpolar Current. In the North Atlantic, most of the transport is advected northward via the western boundary currents, which reduce their strength as they take part in convection processes in the subpolar North Atlantic, also reflected in the northward progress of mass and heat transport. Deep layers carry waters southward along the western boundary, maintaining similar values of mass and heat transport until the separation into an eastern branch crossing the mid-Atlantic Ridge in the South Atlantic. Abyssal waters originating in the Southern Ocean are distributed along the South Atlantic mainly through its western subbasin, flowing northward up to 24.5∘ N, subjected to an increasing trend in their temperature with time. |
format |
Article in Journal/Newspaper |
author |
Caínzos, Verónica Pérez-Hernández, M. Dolores Santana-Toscano, Daniel Arumí-Planas, Cristina Hernández-Guerra, Alonso |
author_facet |
Caínzos, Verónica Pérez-Hernández, M. Dolores Santana-Toscano, Daniel Arumí-Planas, Cristina Hernández-Guerra, Alonso |
author_sort |
Caínzos, Verónica |
title |
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
title_short |
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
title_full |
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
title_fullStr |
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
title_full_unstemmed |
Consistent picture of the horizontal circulation of the Atlantic Ocean over 3 decades |
title_sort |
consistent picture of the horizontal circulation of the atlantic ocean over 3 decades |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/os-19-1009-2023 https://noa.gwlb.de/receive/cop_mods_00067606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066056/os-19-1009-2023.pdf https://os.copernicus.org/articles/19/1009/2023/os-19-1009-2023.pdf |
geographic |
Antarctic Indian Mid-Atlantic Ridge Southern Ocean The Antarctic |
geographic_facet |
Antarctic Indian Mid-Atlantic Ridge Southern Ocean The Antarctic |
genre |
Antarc* Antarctic North Atlantic Southern Ocean |
genre_facet |
Antarc* Antarctic North Atlantic Southern Ocean |
op_relation |
Ocean Science -- http://www.bibliothek.uni-regensburg.de/ezeit/?2183769 -- http://www.copernicus.org/EGU/os/os.html -- 1812-0792 https://doi.org/10.5194/os-19-1009-2023 https://noa.gwlb.de/receive/cop_mods_00067606 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00066056/os-19-1009-2023.pdf https://os.copernicus.org/articles/19/1009/2023/os-19-1009-2023.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/os-19-1009-2023 |
container_title |
Ocean Science |
container_volume |
19 |
container_issue |
4 |
container_start_page |
1009 |
op_container_end_page |
1045 |
_version_ |
1772814691054125056 |