Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation
Changes in the Atlantic Meridional Overturning Circulation, which have the potential to drive societally-important climate impacts, have traditionally been linked to the strength of deep water formation in the subpolar North Atlantic. Yet there is neither clear observational evidence nor agreement a...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://www.vliz.be/imisdocs/publications/41/362341.pdf |
id |
ftnioz:oai:imis.nioz.nl:338586 |
---|---|
record_format |
openpolar |
spelling |
ftnioz:oai:imis.nioz.nl:338586 2023-05-15T17:27:44+02:00 Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation de Jong, M.F. Fried, N. 2021 application/pdf https://www.vliz.be/imisdocs/publications/41/362341.pdf en eng https://www.vliz.be/imisdocs/publications/41/362341.pdf info:eu-repo/semantics/openAccess %3Ci%3ENature+Comm.+12%3C%2Fi%3E%3A+3002.+%3Ca+href%3D%22https%3A%2F%2Fhdl.handle.net%2F10.1038%2Fs41467-021-23350-2%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fhdl.handle.net%2F10.1038%2Fs41467-021-23350-2%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftnioz 2022-05-01T14:14:37Z Changes in the Atlantic Meridional Overturning Circulation, which have the potential to drive societally-important climate impacts, have traditionally been linked to the strength of deep water formation in the subpolar North Atlantic. Yet there is neither clear observational evidence nor agreement among models about how changes in deep water formation influence overturning. Here, we use data from a trans-basin mooring array (OSNAP—Overturning in the Subpolar North Atlantic Program) to show that winter convection during 2014–2018 in the interior basin had minimal impact on density changes in the deep western boundary currents in the subpolar basins. Contrary to previous modeling studies, we find no discernable relationship between western boundary changes and subpolar overturning variability over the observational time scales. Our results require a reconsideration of the notion of deep western boundary changes representing overturning characteristics, with implications for constraining the source of overturning variability within and downstream of the subpolar region. Article in Journal/Newspaper North Atlantic NIOZ Repository (Royal Netherlands Institute for Sea Research) |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Changes in the Atlantic Meridional Overturning Circulation, which have the potential to drive societally-important climate impacts, have traditionally been linked to the strength of deep water formation in the subpolar North Atlantic. Yet there is neither clear observational evidence nor agreement among models about how changes in deep water formation influence overturning. Here, we use data from a trans-basin mooring array (OSNAP—Overturning in the Subpolar North Atlantic Program) to show that winter convection during 2014–2018 in the interior basin had minimal impact on density changes in the deep western boundary currents in the subpolar basins. Contrary to previous modeling studies, we find no discernable relationship between western boundary changes and subpolar overturning variability over the observational time scales. Our results require a reconsideration of the notion of deep western boundary changes representing overturning characteristics, with implications for constraining the source of overturning variability within and downstream of the subpolar region. |
format |
Article in Journal/Newspaper |
author |
de Jong, M.F. Fried, N. |
spellingShingle |
de Jong, M.F. Fried, N. Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
author_facet |
de Jong, M.F. Fried, N. |
author_sort |
de Jong, M.F. |
title |
Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
title_short |
Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
title_full |
Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
title_fullStr |
Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
title_full_unstemmed |
Subpolar North Atlantic western boundary density anomalies and the Meridional Overturning Circulation |
title_sort |
subpolar north atlantic western boundary density anomalies and the meridional overturning circulation |
publishDate |
2021 |
url |
https://www.vliz.be/imisdocs/publications/41/362341.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
%3Ci%3ENature+Comm.+12%3C%2Fi%3E%3A+3002.+%3Ca+href%3D%22https%3A%2F%2Fhdl.handle.net%2F10.1038%2Fs41467-021-23350-2%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fhdl.handle.net%2F10.1038%2Fs41467-021-23350-2%3C%2Fa%3E |
op_relation |
https://www.vliz.be/imisdocs/publications/41/362341.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766120011075682304 |