High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts
The transition from last glacial to deglacial and subsequently to modern interglacial climate conditions was accompanied by abrupt shifts in the palaeoceanographic setting in the subpolar North Atlantic. Knowledge about the role that sea ice coverage played during these rapid climate reversals is li...
Published in: | Earth and Planetary Science Letters |
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Online Access: | https://epic.awi.de/id/eprint/36143/ https://doi.org/10.1016/j.epsl.2014.07.016 https://hdl.handle.net/10013/epic.44001 |
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ftawi:oai:epic.awi.de:36143 2024-09-15T17:54:07+00:00 High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts Müller, Juliane Stein, Rüdiger 2014-10-01 https://epic.awi.de/id/eprint/36143/ https://doi.org/10.1016/j.epsl.2014.07.016 https://hdl.handle.net/10013/epic.44001 unknown ELSEVIER SCIENCE BV Müller, J. orcid:0000-0003-0724-4131 and Stein, R. orcid:0000-0002-4453-9564 (2014) High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts , Earth and Planetary Science Letters, 403 , pp. 446-455 . doi:10.1016/j.epsl.2014.07.016 <https://doi.org/10.1016/j.epsl.2014.07.016> , hdl:10013/epic.44001 EPIC3Earth and Planetary Science Letters, ELSEVIER SCIENCE BV, 403, pp. 446-455, ISSN: 0012-821X Article isiRev 2014 ftawi https://doi.org/10.1016/j.epsl.2014.07.016 2024-06-24T04:09:53Z The transition from last glacial to deglacial and subsequently to modern interglacial climate conditions was accompanied by abrupt shifts in the palaeoceanographic setting in the subpolar North Atlantic. Knowledge about the role that sea ice coverage played during these rapid climate reversals is limited since most marine sediment cores from the higher latitudes provide only a coarse temporal resolution and often poorly preserved microfossils. Here we present a highly resolved reconstruction of sea ice conditions that characterised the eastern Fram Strait – a key area for water mass exchange between the Arctic Ocean and the North Atlantic – for the past 30 ka BP. This reconstruction is based on the distribution of the sea ice biomarker IP25 and phytoplankton derived biomarkers in a sediment core from the continental slope of western Svalbard. During the late glacial (30 ka to 19 ka BP), recurrent advances and retreats of sea ice characterised the study area and point to a hitherto less considered oceanic (and/or atmospheric) variability. A long-lasting perennial sea ice coverage in eastern Fram Strait persisted only at the very end of the Last Glacial Maximum (i.e. from 19.2 to 17.6 ka BP) and was abruptly reduced at the onset of Heinrich Event 1 – coincident with or possibly even inducing the collapse of the Atlantic Meridional Overturning Circulation (AMOC). Further maximum sea ice conditions prevailed during the Younger Dryas cooling event and support the assumption of an AMOC reduction due to increased formation and export of Arctic sea ice through Fram Strait. A significant retreat of sea ice and sea surface warming are observed for the Early Holocene. Article in Journal/Newspaper Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Earth and Planetary Science Letters 403 446 455 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
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description |
The transition from last glacial to deglacial and subsequently to modern interglacial climate conditions was accompanied by abrupt shifts in the palaeoceanographic setting in the subpolar North Atlantic. Knowledge about the role that sea ice coverage played during these rapid climate reversals is limited since most marine sediment cores from the higher latitudes provide only a coarse temporal resolution and often poorly preserved microfossils. Here we present a highly resolved reconstruction of sea ice conditions that characterised the eastern Fram Strait – a key area for water mass exchange between the Arctic Ocean and the North Atlantic – for the past 30 ka BP. This reconstruction is based on the distribution of the sea ice biomarker IP25 and phytoplankton derived biomarkers in a sediment core from the continental slope of western Svalbard. During the late glacial (30 ka to 19 ka BP), recurrent advances and retreats of sea ice characterised the study area and point to a hitherto less considered oceanic (and/or atmospheric) variability. A long-lasting perennial sea ice coverage in eastern Fram Strait persisted only at the very end of the Last Glacial Maximum (i.e. from 19.2 to 17.6 ka BP) and was abruptly reduced at the onset of Heinrich Event 1 – coincident with or possibly even inducing the collapse of the Atlantic Meridional Overturning Circulation (AMOC). Further maximum sea ice conditions prevailed during the Younger Dryas cooling event and support the assumption of an AMOC reduction due to increased formation and export of Arctic sea ice through Fram Strait. A significant retreat of sea ice and sea surface warming are observed for the Early Holocene. |
format |
Article in Journal/Newspaper |
author |
Müller, Juliane Stein, Rüdiger |
spellingShingle |
Müller, Juliane Stein, Rüdiger High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
author_facet |
Müller, Juliane Stein, Rüdiger |
author_sort |
Müller, Juliane |
title |
High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
title_short |
High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
title_full |
High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
title_fullStr |
High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
title_full_unstemmed |
High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts |
title_sort |
high-resolution record of late glacial and deglacial sea ice changes in fram strait corroborates ice–ocean interactions during abrupt climate shifts |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/36143/ https://doi.org/10.1016/j.epsl.2014.07.016 https://hdl.handle.net/10013/epic.44001 |
genre |
Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard |
genre_facet |
Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard |
op_source |
EPIC3Earth and Planetary Science Letters, ELSEVIER SCIENCE BV, 403, pp. 446-455, ISSN: 0012-821X |
op_relation |
Müller, J. orcid:0000-0003-0724-4131 and Stein, R. orcid:0000-0002-4453-9564 (2014) High-resolution record of late glacial and deglacial sea ice changes in Fram Strait corroborates ice–ocean interactions during abrupt climate shifts , Earth and Planetary Science Letters, 403 , pp. 446-455 . doi:10.1016/j.epsl.2014.07.016 <https://doi.org/10.1016/j.epsl.2014.07.016> , hdl:10013/epic.44001 |
op_doi |
https://doi.org/10.1016/j.epsl.2014.07.016 |
container_title |
Earth and Planetary Science Letters |
container_volume |
403 |
container_start_page |
446 |
op_container_end_page |
455 |
_version_ |
1810430340690345984 |