A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean
Paleoceanographical studies of Marine Isotope Stage (MIS) 11 have revealed higher-than-present sea surface temperatures (SSTs) in the North Atlantic and in parts of the Arctic but lower-than-present SSTs in the Nordic Seas, the main throughflow area of warm water into the Arctic Ocean. We resolve th...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AGU (American Geophysical Union)
2016
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/34417/ https://oceanrep.geomar.de/id/eprint/34417/1/grl55116.pdf https://doi.org/10.1002/2016GL070294 |
id |
ftoceanrep:oai:oceanrep.geomar.de:34417 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:34417 2023-05-15T14:49:33+02:00 A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean Kandiano, Evgeniya S. van der Meer, Marcel T. J. Bauch, Henning A. Helmke, Jan Damsté, Jaap S. Sinninghe Schouten, Stefan 2016-10-28 text https://oceanrep.geomar.de/id/eprint/34417/ https://oceanrep.geomar.de/id/eprint/34417/1/grl55116.pdf https://doi.org/10.1002/2016GL070294 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/34417/1/grl55116.pdf Kandiano, E. S., van der Meer, M. T. J., Bauch, H. A. , Helmke, J., Damsté, J. S. S. and Schouten, S. (2016) A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean. Open Access Geophysical Research Letters, 43 (20). pp. 10929-10937. DOI 10.1002/2016GL070294 <https://doi.org/10.1002/2016GL070294>. doi:10.1002/2016GL070294 info:eu-repo/semantics/openAccess Article PeerReviewed 2016 ftoceanrep https://doi.org/10.1002/2016GL070294 2023-04-07T15:28:28Z Paleoceanographical studies of Marine Isotope Stage (MIS) 11 have revealed higher-than-present sea surface temperatures (SSTs) in the North Atlantic and in parts of the Arctic but lower-than-present SSTs in the Nordic Seas, the main throughflow area of warm water into the Arctic Ocean. We resolve this contradiction by complementing SST data based on planktic foraminiferal abundances with surface salinity changes using hydrogen isotopic compositions of alkenones in a core from the central Nordic Seas. The data indicate the prevalence of a relatively cold, low-salinity, surface water layer in the Nordic Seas during most of MIS 11. In spite of the low-density surface layer, which was kept buoyant by continuous melting of surrounding glaciers, warmer Atlantic water was still propagating northward at the subsurface thus maintaining meridional overturning circulation. This study can help to better constrain the impact of continuous melting of Greenland and Arctic ice on high-latitude ocean circulation and climate. Article in Journal/Newspaper Arctic Arctic Ocean Foraminifera* Greenland Nordic Seas North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Greenland Geophysical Research Letters 43 20 10,929 10,937 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Paleoceanographical studies of Marine Isotope Stage (MIS) 11 have revealed higher-than-present sea surface temperatures (SSTs) in the North Atlantic and in parts of the Arctic but lower-than-present SSTs in the Nordic Seas, the main throughflow area of warm water into the Arctic Ocean. We resolve this contradiction by complementing SST data based on planktic foraminiferal abundances with surface salinity changes using hydrogen isotopic compositions of alkenones in a core from the central Nordic Seas. The data indicate the prevalence of a relatively cold, low-salinity, surface water layer in the Nordic Seas during most of MIS 11. In spite of the low-density surface layer, which was kept buoyant by continuous melting of surrounding glaciers, warmer Atlantic water was still propagating northward at the subsurface thus maintaining meridional overturning circulation. This study can help to better constrain the impact of continuous melting of Greenland and Arctic ice on high-latitude ocean circulation and climate. |
format |
Article in Journal/Newspaper |
author |
Kandiano, Evgeniya S. van der Meer, Marcel T. J. Bauch, Henning A. Helmke, Jan Damsté, Jaap S. Sinninghe Schouten, Stefan |
spellingShingle |
Kandiano, Evgeniya S. van der Meer, Marcel T. J. Bauch, Henning A. Helmke, Jan Damsté, Jaap S. Sinninghe Schouten, Stefan A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
author_facet |
Kandiano, Evgeniya S. van der Meer, Marcel T. J. Bauch, Henning A. Helmke, Jan Damsté, Jaap S. Sinninghe Schouten, Stefan |
author_sort |
Kandiano, Evgeniya S. |
title |
A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
title_short |
A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
title_full |
A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
title_fullStr |
A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
title_full_unstemmed |
A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean |
title_sort |
cold and fresh ocean surface in the nordic seas during mis 11: significance for the future ocean |
publisher |
AGU (American Geophysical Union) |
publishDate |
2016 |
url |
https://oceanrep.geomar.de/id/eprint/34417/ https://oceanrep.geomar.de/id/eprint/34417/1/grl55116.pdf https://doi.org/10.1002/2016GL070294 |
geographic |
Arctic Arctic Ocean Greenland |
geographic_facet |
Arctic Arctic Ocean Greenland |
genre |
Arctic Arctic Ocean Foraminifera* Greenland Nordic Seas North Atlantic |
genre_facet |
Arctic Arctic Ocean Foraminifera* Greenland Nordic Seas North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/34417/1/grl55116.pdf Kandiano, E. S., van der Meer, M. T. J., Bauch, H. A. , Helmke, J., Damsté, J. S. S. and Schouten, S. (2016) A cold and fresh ocean surface in the Nordic Seas during MIS 11: Significance for the future ocean. Open Access Geophysical Research Letters, 43 (20). pp. 10929-10937. DOI 10.1002/2016GL070294 <https://doi.org/10.1002/2016GL070294>. doi:10.1002/2016GL070294 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016GL070294 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
20 |
container_start_page |
10,929 |
op_container_end_page |
10,937 |
_version_ |
1766320599409360896 |