Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic
Ocean sediment drifts contain important information about past bottom currents but a direct link between the study of sedimentary archives and ocean dynamics is not always possible. To close this gap for the North Atlantic, we set up a new coupled Ice-Ocean-Sediment Model of the N. Atlantic - Arctic...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | https://epic.awi.de/id/eprint/53971/ https://www.sciencedirect.com/science/article/abs/pii/S0031018221001760 https://hdl.handle.net/10013/epic.a21b68e1-5560-4785-b1ed-5b3c0cb402ca |
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ftawi:oai:epic.awi.de:53971 2023-05-15T15:05:16+02:00 Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic Drinkorn, Catherine Saynisch-Wagner, Jan Uenzelmann-Neben, Gabriele Thomas, Maik 2021-06-15 https://epic.awi.de/id/eprint/53971/ https://www.sciencedirect.com/science/article/abs/pii/S0031018221001760 https://hdl.handle.net/10013/epic.a21b68e1-5560-4785-b1ed-5b3c0cb402ca unknown ELSEVIER SCIENCE BV Drinkorn, C. , Saynisch-Wagner, J. , Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Thomas, M. (2021) Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic , Palaeogeography Palaeoclimatology Palaeoecology, 572 . doi:10.1016/j.palaeo.2021.110391 <https://doi.org/10.1016/j.palaeo.2021.110391> , hdl:10013/epic.a21b68e1-5560-4785-b1ed-5b3c0cb402ca EPIC3Palaeogeography Palaeoclimatology Palaeoecology, ELSEVIER SCIENCE BV, 572, ISSN: 0031-0182 Article isiRev 2021 ftawi https://doi.org/10.1016/j.palaeo.2021.110391 2021-12-24T15:46:16Z Ocean sediment drifts contain important information about past bottom currents but a direct link between the study of sedimentary archives and ocean dynamics is not always possible. To close this gap for the North Atlantic, we set up a new coupled Ice-Ocean-Sediment Model of the N. Atlantic - Arctic region. In order to evaluate the potential dynamics of the model, we conducted decadal sensitivity experiments. In our model contouritic sedimentation shows a significant sensitivity towards climate variability for most of the contourite drift locations in the model domain. We observe a general decrease of sedimentation rates during warm conditions with decreasing atmospheric and oceanic gradients and an extensive increase of sedimentation rates during cold conditions with respective increased gradients. We can relate these results to changes in the dominant bottom circulation supplying deep water masses to the contourite sites under different climate conditions. A better understanding of northern deep water pathways in the Atlantic Meridional Overturning Circulation (AMOC) is crucial for evaluating possible consequences of climate change in the ocean. Article in Journal/Newspaper Arctic Atlantic Arctic Atlantic-Arctic Climate change North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Palaeogeography, Palaeoclimatology, Palaeoecology 572 110391 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Ocean sediment drifts contain important information about past bottom currents but a direct link between the study of sedimentary archives and ocean dynamics is not always possible. To close this gap for the North Atlantic, we set up a new coupled Ice-Ocean-Sediment Model of the N. Atlantic - Arctic region. In order to evaluate the potential dynamics of the model, we conducted decadal sensitivity experiments. In our model contouritic sedimentation shows a significant sensitivity towards climate variability for most of the contourite drift locations in the model domain. We observe a general decrease of sedimentation rates during warm conditions with decreasing atmospheric and oceanic gradients and an extensive increase of sedimentation rates during cold conditions with respective increased gradients. We can relate these results to changes in the dominant bottom circulation supplying deep water masses to the contourite sites under different climate conditions. A better understanding of northern deep water pathways in the Atlantic Meridional Overturning Circulation (AMOC) is crucial for evaluating possible consequences of climate change in the ocean. |
format |
Article in Journal/Newspaper |
author |
Drinkorn, Catherine Saynisch-Wagner, Jan Uenzelmann-Neben, Gabriele Thomas, Maik |
spellingShingle |
Drinkorn, Catherine Saynisch-Wagner, Jan Uenzelmann-Neben, Gabriele Thomas, Maik Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
author_facet |
Drinkorn, Catherine Saynisch-Wagner, Jan Uenzelmann-Neben, Gabriele Thomas, Maik |
author_sort |
Drinkorn, Catherine |
title |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
title_short |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
title_full |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
title_fullStr |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
title_full_unstemmed |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic |
title_sort |
decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the north atlantic |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/53971/ https://www.sciencedirect.com/science/article/abs/pii/S0031018221001760 https://hdl.handle.net/10013/epic.a21b68e1-5560-4785-b1ed-5b3c0cb402ca |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Atlantic Arctic Atlantic-Arctic Climate change North Atlantic |
genre_facet |
Arctic Atlantic Arctic Atlantic-Arctic Climate change North Atlantic |
op_source |
EPIC3Palaeogeography Palaeoclimatology Palaeoecology, ELSEVIER SCIENCE BV, 572, ISSN: 0031-0182 |
op_relation |
Drinkorn, C. , Saynisch-Wagner, J. , Uenzelmann-Neben, G. orcid:0000-0002-0115-5923 and Thomas, M. (2021) Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the North Atlantic , Palaeogeography Palaeoclimatology Palaeoecology, 572 . doi:10.1016/j.palaeo.2021.110391 <https://doi.org/10.1016/j.palaeo.2021.110391> , hdl:10013/epic.a21b68e1-5560-4785-b1ed-5b3c0cb402ca |
op_doi |
https://doi.org/10.1016/j.palaeo.2021.110391 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
572 |
container_start_page |
110391 |
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1766337001401876480 |