Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11
Investigating past interglacial climates not only help to understand how the climate system operates in general, it also forms a vital basis for climate predictions. We reconstructed vertical stratification changes in temperature and salinity in the North Atlantic for a period some 400 ka ago (MIS11...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/366615 2023-11-12T04:17:57+01:00 Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 Kandiano, Evgenia S. Van der Meer, Marcel T J Schouten, Stefan Fahl, Kirsten Sinninghe Damsté, Jaap S Bauch, Henning A non-UU output of UU-AW members 2017-04-10 image/pdf https://dspace.library.uu.nl/handle/1874/366615 en eng 2045-2322 https://dspace.library.uu.nl/handle/1874/366615 info:eu-repo/semantics/OpenAccess Article 2017 ftunivutrecht 2023-11-01T23:17:25Z Investigating past interglacial climates not only help to understand how the climate system operates in general, it also forms a vital basis for climate predictions. We reconstructed vertical stratification changes in temperature and salinity in the North Atlantic for a period some 400 ka ago (MIS11), an interglacial time analogue of a future climate. As inferred from a unique set of biogeochemical, geochemical, and faunal data, the internal upper ocean stratification across MIS 11 shows distinct depth-dependent dynamical changes related to vertical as well as lateral shifts in the upper Atlantic meridional circulation system. Importantly, transient cold events are recognized near the end of the long phase of postglacial warming at surface, subsurface, mid, and deeper water layers. These data demonstrate that MIS 11 coolings over the North Atlantic were initially triggered by freshwater input at the surface and expansion of cold polar waters into the Subpolar Gyre. The cooling signal was then transmitted downwards into mid-water depths. Since the cold events occurred after the main deglacial phase we suggest that their cause might be related to continuous melting of the Greenland ice sheet, a mechanism that might also be relevant for the present and upcoming climate. Article in Journal/Newspaper Greenland Ice Sheet North Atlantic Utrecht University Repository Greenland |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
Investigating past interglacial climates not only help to understand how the climate system operates in general, it also forms a vital basis for climate predictions. We reconstructed vertical stratification changes in temperature and salinity in the North Atlantic for a period some 400 ka ago (MIS11), an interglacial time analogue of a future climate. As inferred from a unique set of biogeochemical, geochemical, and faunal data, the internal upper ocean stratification across MIS 11 shows distinct depth-dependent dynamical changes related to vertical as well as lateral shifts in the upper Atlantic meridional circulation system. Importantly, transient cold events are recognized near the end of the long phase of postglacial warming at surface, subsurface, mid, and deeper water layers. These data demonstrate that MIS 11 coolings over the North Atlantic were initially triggered by freshwater input at the surface and expansion of cold polar waters into the Subpolar Gyre. The cooling signal was then transmitted downwards into mid-water depths. Since the cold events occurred after the main deglacial phase we suggest that their cause might be related to continuous melting of the Greenland ice sheet, a mechanism that might also be relevant for the present and upcoming climate. |
author2 |
non-UU output of UU-AW members |
format |
Article in Journal/Newspaper |
author |
Kandiano, Evgenia S. Van der Meer, Marcel T J Schouten, Stefan Fahl, Kirsten Sinninghe Damsté, Jaap S Bauch, Henning A |
spellingShingle |
Kandiano, Evgenia S. Van der Meer, Marcel T J Schouten, Stefan Fahl, Kirsten Sinninghe Damsté, Jaap S Bauch, Henning A Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
author_facet |
Kandiano, Evgenia S. Van der Meer, Marcel T J Schouten, Stefan Fahl, Kirsten Sinninghe Damsté, Jaap S Bauch, Henning A |
author_sort |
Kandiano, Evgenia S. |
title |
Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
title_short |
Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
title_full |
Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
title_fullStr |
Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
title_full_unstemmed |
Response of the North Atlantic surface and intermediate ocean structure to climate warming of MIS 11 |
title_sort |
response of the north atlantic surface and intermediate ocean structure to climate warming of mis 11 |
publishDate |
2017 |
url |
https://dspace.library.uu.nl/handle/1874/366615 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet North Atlantic |
genre_facet |
Greenland Ice Sheet North Atlantic |
op_relation |
2045-2322 https://dspace.library.uu.nl/handle/1874/366615 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782334700974505984 |