Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka
Variations in the poleward-directed Atlantic heat transfer was investigated over the past 135 ka with special emphasis on the last and present interglacial climate development (Eemian and Holocene). Both interglacials exhibited very similar climatic oscillations during each preceding glacial termina...
Published in: | Geophysical Research Letters |
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AGU (American Geophysical Union)
2012
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Online Access: | https://oceanrep.geomar.de/id/eprint/19757/ https://oceanrep.geomar.de/id/eprint/19757/1/2012_BauchKandianoHelmke_2012GL051800.pdf https://doi.org/10.1029/2012GL051800 |
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ftoceanrep:oai:oceanrep.geomar.de:19757 2023-05-15T15:06:13+02:00 Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka Bauch, Henning A. Kandiano, Evgeniya Helmke, Jan P. 2012 text https://oceanrep.geomar.de/id/eprint/19757/ https://oceanrep.geomar.de/id/eprint/19757/1/2012_BauchKandianoHelmke_2012GL051800.pdf https://doi.org/10.1029/2012GL051800 en eng AGU (American Geophysical Union) https://oceanrep.geomar.de/id/eprint/19757/1/2012_BauchKandianoHelmke_2012GL051800.pdf Bauch, H. A. , Kandiano, E. and Helmke, J. P. (2012) Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka. Open Access Geophysical Research Letters, 39 (11). L11604. DOI 10.1029/2012GL051800 <https://doi.org/10.1029/2012GL051800>. doi:10.1029/2012GL051800 info:eu-repo/semantics/openAccess Article PeerReviewed 2012 ftoceanrep https://doi.org/10.1029/2012GL051800 2023-04-07T15:06:58Z Variations in the poleward-directed Atlantic heat transfer was investigated over the past 135 ka with special emphasis on the last and present interglacial climate development (Eemian and Holocene). Both interglacials exhibited very similar climatic oscillations during each preceding glacial terminations (deglacial TI and TII). Like TI, also TII has pronounced cold–warm–cold changes akin to events such as H1, Bølling/Allerød, and the Younger Dryas. But unlike TI, the cold events in TII were associated with intermittent southerly invasions of an Atlantic faunal component which underscores quite a different water mass evolution in the Nordic Seas. Within the Eemian interglaciation proper, peak warming intervals were antiphased between the Nordic Seas and North Atlantic. Moreover, inferred temperatures for the Nordic Seas were generally colder in the Eemian than in the Holocene, and vice versa for the North Atlantic. A reduced intensity of Atlantic Ocean heat transfer to the Arctic therefore characterized the Eemian, requiring a reassessment of the actual role of the ocean–atmosphere system behind interglacial, but also, glacial climate changes. Key Points - Reduced AMOC during the Eemian - BA/YD-type warming/cooling in Termination 1 and 2 - Comparison of glacial inceptions reveals present climate status Article in Journal/Newspaper Arctic Nordic Seas North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Geophysical Research Letters 39 11 n/a n/a |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Variations in the poleward-directed Atlantic heat transfer was investigated over the past 135 ka with special emphasis on the last and present interglacial climate development (Eemian and Holocene). Both interglacials exhibited very similar climatic oscillations during each preceding glacial terminations (deglacial TI and TII). Like TI, also TII has pronounced cold–warm–cold changes akin to events such as H1, Bølling/Allerød, and the Younger Dryas. But unlike TI, the cold events in TII were associated with intermittent southerly invasions of an Atlantic faunal component which underscores quite a different water mass evolution in the Nordic Seas. Within the Eemian interglaciation proper, peak warming intervals were antiphased between the Nordic Seas and North Atlantic. Moreover, inferred temperatures for the Nordic Seas were generally colder in the Eemian than in the Holocene, and vice versa for the North Atlantic. A reduced intensity of Atlantic Ocean heat transfer to the Arctic therefore characterized the Eemian, requiring a reassessment of the actual role of the ocean–atmosphere system behind interglacial, but also, glacial climate changes. Key Points - Reduced AMOC during the Eemian - BA/YD-type warming/cooling in Termination 1 and 2 - Comparison of glacial inceptions reveals present climate status |
format |
Article in Journal/Newspaper |
author |
Bauch, Henning A. Kandiano, Evgeniya Helmke, Jan P. |
spellingShingle |
Bauch, Henning A. Kandiano, Evgeniya Helmke, Jan P. Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
author_facet |
Bauch, Henning A. Kandiano, Evgeniya Helmke, Jan P. |
author_sort |
Bauch, Henning A. |
title |
Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
title_short |
Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
title_full |
Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
title_fullStr |
Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
title_full_unstemmed |
Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka |
title_sort |
contrasting ocean changes between the subpolar and polar north atlantic during the past 135 ka |
publisher |
AGU (American Geophysical Union) |
publishDate |
2012 |
url |
https://oceanrep.geomar.de/id/eprint/19757/ https://oceanrep.geomar.de/id/eprint/19757/1/2012_BauchKandianoHelmke_2012GL051800.pdf https://doi.org/10.1029/2012GL051800 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Nordic Seas North Atlantic |
genre_facet |
Arctic Nordic Seas North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/19757/1/2012_BauchKandianoHelmke_2012GL051800.pdf Bauch, H. A. , Kandiano, E. and Helmke, J. P. (2012) Contrasting ocean changes between the subpolar and polar North Atlantic during the past 135 ka. Open Access Geophysical Research Letters, 39 (11). L11604. DOI 10.1029/2012GL051800 <https://doi.org/10.1029/2012GL051800>. doi:10.1029/2012GL051800 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2012GL051800 |
container_title |
Geophysical Research Letters |
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39 |
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11 |
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1766337873599004672 |