Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene
An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway, south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of millennial-sc...
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ftarchimer:oai:archimer.ifremer.fr:37493 2023-05-15T17:32:48+02:00 Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene Marino, Gianluca Zahn, Rainer Ziegler, Martin Purcell, Conor Knorr, Gregor Hall, Ian R. Ziveri, Patrizia Elderfield, Henry 2013-09 application/pdf https://archimer.ifremer.fr/doc/00264/37493/35791.pdf https://doi.org/10.1002/palo.20038 https://archimer.ifremer.fr/doc/00264/37493/ eng eng Amer Geophysical Union info:eu-repo/grantAgreement/EC/FP7/238512/EU//GATEWAYS https://archimer.ifremer.fr/doc/00264/37493/35791.pdf doi:10.1002/palo.20038 https://archimer.ifremer.fr/doc/00264/37493/ 2013. American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use Paleoceanography (0883-8305) (Amer Geophysical Union), 2013-09 , Vol. 28 , N. 3 , P. 599-606 Agulhas Leakage abrupt climate change millennial-scale variability AMOC bipolar seesaw Southern Hemisphere atmospheric circulation text Publication info:eu-repo/semantics/article 2013 ftarchimer https://doi.org/10.1002/palo.20038 2021-09-23T20:26:05Z An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway, south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of millennial-scale salinification events, indicating strengthened salt leakage into the South Atlantic, appear to correlate with abrupt changes in the North Atlantic climate and Atlantic Meridional Overturning Circulation (AMOC). This interhemispheric coupling, which plausibly involved changes in the Hadley Cell and midlatitude westerlies that impacted the interocean transport at the tip of Africa, suggests that the Agulhas Leakage acted as a source of negative buoyancy for the perturbed AMOC, possibly aiding its return to full strength. Our finding points to the Indian-to-Atlantic salt transport as a potentially important modulator of the AMOC during the abrupt climate changes of the Late Pleistocene. Article in Journal/Newspaper North Atlantic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Indian Paleoceanography 28 3 599 606 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Agulhas Leakage abrupt climate change millennial-scale variability AMOC bipolar seesaw Southern Hemisphere atmospheric circulation |
spellingShingle |
Agulhas Leakage abrupt climate change millennial-scale variability AMOC bipolar seesaw Southern Hemisphere atmospheric circulation Marino, Gianluca Zahn, Rainer Ziegler, Martin Purcell, Conor Knorr, Gregor Hall, Ian R. Ziveri, Patrizia Elderfield, Henry Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
topic_facet |
Agulhas Leakage abrupt climate change millennial-scale variability AMOC bipolar seesaw Southern Hemisphere atmospheric circulation |
description |
An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway, south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of millennial-scale salinification events, indicating strengthened salt leakage into the South Atlantic, appear to correlate with abrupt changes in the North Atlantic climate and Atlantic Meridional Overturning Circulation (AMOC). This interhemispheric coupling, which plausibly involved changes in the Hadley Cell and midlatitude westerlies that impacted the interocean transport at the tip of Africa, suggests that the Agulhas Leakage acted as a source of negative buoyancy for the perturbed AMOC, possibly aiding its return to full strength. Our finding points to the Indian-to-Atlantic salt transport as a potentially important modulator of the AMOC during the abrupt climate changes of the Late Pleistocene. |
format |
Article in Journal/Newspaper |
author |
Marino, Gianluca Zahn, Rainer Ziegler, Martin Purcell, Conor Knorr, Gregor Hall, Ian R. Ziveri, Patrizia Elderfield, Henry |
author_facet |
Marino, Gianluca Zahn, Rainer Ziegler, Martin Purcell, Conor Knorr, Gregor Hall, Ian R. Ziveri, Patrizia Elderfield, Henry |
author_sort |
Marino, Gianluca |
title |
Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
title_short |
Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
title_full |
Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
title_fullStr |
Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
title_full_unstemmed |
Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
title_sort |
agulhas salt-leakage oscillations during abrupt climate changes of the late pleistocene |
publisher |
Amer Geophysical Union |
publishDate |
2013 |
url |
https://archimer.ifremer.fr/doc/00264/37493/35791.pdf https://doi.org/10.1002/palo.20038 https://archimer.ifremer.fr/doc/00264/37493/ |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Paleoceanography (0883-8305) (Amer Geophysical Union), 2013-09 , Vol. 28 , N. 3 , P. 599-606 |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/238512/EU//GATEWAYS https://archimer.ifremer.fr/doc/00264/37493/35791.pdf doi:10.1002/palo.20038 https://archimer.ifremer.fr/doc/00264/37493/ |
op_rights |
2013. American Geophysical Union. All Rights Reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/palo.20038 |
container_title |
Paleoceanography |
container_volume |
28 |
container_issue |
3 |
container_start_page |
599 |
op_container_end_page |
606 |
_version_ |
1766131072367591424 |