Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region
Ocean sediment drifts contain important information about past bottom currents but a direct link from the study of sedimentary archives to 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 entire Pan-Arctic region...
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ftawi:oai:epic.awi.de:53600 2023-05-15T14:27:25+02:00 Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region Drinkorn, Catherine Saynisch-Wagner, Jan Uenzelmann-Neben, Gabriele Thomas, Maik 2021-04 https://epic.awi.de/id/eprint/53600/ https://hdl.handle.net/10013/epic.d5c2b70b-43ef-454f-bd78-164fc0949f83 unknown 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 Pan-Arctic region , EGU General Assembly vEGU21, online, 19 April 2021 - 30 April 2021 . doi:10.5194/egusphere-egu21-799 <https://doi.org/10.5194/egusphere-egu21-799> , hdl:10013/epic.d5c2b70b-43ef-454f-bd78-164fc0949f83 EPIC3EGU General Assembly vEGU21, online, 2021-04-19-2021-04-30 Conference notRev 2021 ftawi https://doi.org/10.5194/egusphere-egu21-799 2021-12-24T15:46:07Z Ocean sediment drifts contain important information about past bottom currents but a direct link from the study of sedimentary archives to 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 entire Pan-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. Conference Object Arctic Arctic Climate change North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Ocean sediment drifts contain important information about past bottom currents but a direct link from the study of sedimentary archives to 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 entire Pan-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 |
Conference Object |
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 Pan-Arctic region |
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 Pan-Arctic region |
title_short |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region |
title_full |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region |
title_fullStr |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region |
title_full_unstemmed |
Decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the Pan-Arctic region |
title_sort |
decadal climate sensitivity of contouritic sedimentation in a dynamically coupled ice-ocean-sediment model of the pan-arctic region |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/53600/ https://hdl.handle.net/10013/epic.d5c2b70b-43ef-454f-bd78-164fc0949f83 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change North Atlantic |
genre_facet |
Arctic Arctic Climate change North Atlantic |
op_source |
EPIC3EGU General Assembly vEGU21, online, 2021-04-19-2021-04-30 |
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 Pan-Arctic region , EGU General Assembly vEGU21, online, 19 April 2021 - 30 April 2021 . doi:10.5194/egusphere-egu21-799 <https://doi.org/10.5194/egusphere-egu21-799> , hdl:10013/epic.d5c2b70b-43ef-454f-bd78-164fc0949f83 |
op_doi |
https://doi.org/10.5194/egusphere-egu21-799 |
_version_ |
1766301149377331200 |