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 (IAO-G), south of Africa, demonstrates recurrent and high-amplitude salinity oscillations in the Agulhas Leakage area during the penultimate glacial-interglacial cycle. A series of mille...
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2013
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Online Access: | https://epic.awi.de/id/eprint/33363/ http://onlinelibrary.wiley.com/doi/10.1002/palo.20038/abstract https://hdl.handle.net/10013/epic.41925 |
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ftawi:oai:epic.awi.de:33363 2024-09-15T18:23:10+00:00 Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene Gianluca, M. Zahn, R. Ziegler, M. Purcell, Conor Knorr, Gregor Hall, I. R. Ziveri, P. Elderfield, H. 2013 https://epic.awi.de/id/eprint/33363/ http://onlinelibrary.wiley.com/doi/10.1002/palo.20038/abstract https://hdl.handle.net/10013/epic.41925 unknown AMER GEOPHYSICAL UNION Gianluca, M. , Zahn, R. , Ziegler, M. , Purcell, C. , Knorr, G. orcid:0000-0002-8317-5046 , Hall, I. R. , Ziveri, P. and Elderfield, H. (2013) Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene , Paleoceanography, 28 . doi:10.1002/palo.20038 <https://doi.org/10.1002/palo.20038> , hdl:10013/epic.41925 EPIC3Paleoceanography, AMER GEOPHYSICAL UNION, 28, ISSN: 0883-8305 Article isiRev 2013 ftawi https://doi.org/10.1002/palo.20038 2024-06-24T04:07:26Z An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway (IAO-G), 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 mid-latitude westerlies that impacted the inter-ocean 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 Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Paleoceanography 28 3 599 606 |
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Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
An ensemble of new, high-resolution records of surface ocean hydrography from the Indian-Atlantic oceanic gateway (IAO-G), 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 mid-latitude westerlies that impacted the inter-ocean 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 |
Gianluca, M. Zahn, R. Ziegler, M. Purcell, Conor Knorr, Gregor Hall, I. R. Ziveri, P. Elderfield, H. |
spellingShingle |
Gianluca, M. Zahn, R. Ziegler, M. Purcell, Conor Knorr, Gregor Hall, I. R. Ziveri, P. Elderfield, H. Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene |
author_facet |
Gianluca, M. Zahn, R. Ziegler, M. Purcell, Conor Knorr, Gregor Hall, I. R. Ziveri, P. Elderfield, H. |
author_sort |
Gianluca, M. |
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://epic.awi.de/id/eprint/33363/ http://onlinelibrary.wiley.com/doi/10.1002/palo.20038/abstract https://hdl.handle.net/10013/epic.41925 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EPIC3Paleoceanography, AMER GEOPHYSICAL UNION, 28, ISSN: 0883-8305 |
op_relation |
Gianluca, M. , Zahn, R. , Ziegler, M. , Purcell, C. , Knorr, G. orcid:0000-0002-8317-5046 , Hall, I. R. , Ziveri, P. and Elderfield, H. (2013) Agulhas salt-leakage oscillations during abrupt climate changes of the Late Pleistocene , Paleoceanography, 28 . doi:10.1002/palo.20038 <https://doi.org/10.1002/palo.20038> , hdl:10013/epic.41925 |
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_ |
1810463313729945600 |