Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial
Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades and climate scenarios suggest that sea ice may completely disappear during summer within the next about 50–100 years. Here we produce Arctic sea ice biomarker proxy records for the penultimate glacial (...
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Online Access: | https://oceanrep.geomar.de/id/eprint/44288/ https://oceanrep.geomar.de/id/eprint/44288/1/s41467-017-00552-1.pdf https://doi.org/10.1038/s41467-017-00552-1 |
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ftoceanrep:oai:oceanrep.geomar.de:44288 2023-05-15T14:26:31+02:00 Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial Stein, Ruediger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit 2017 text https://oceanrep.geomar.de/id/eprint/44288/ https://oceanrep.geomar.de/id/eprint/44288/1/s41467-017-00552-1.pdf https://doi.org/10.1038/s41467-017-00552-1 en eng Nature Research https://oceanrep.geomar.de/id/eprint/44288/1/s41467-017-00552-1.pdf Stein, R., Fahl, K., Gierz, P., Niessen, F. and Lohmann, G. (2017) Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial. Open Access Nature Communications, 8 (1). Art.Nr. 373. DOI 10.1038/s41467-017-00552-1 <https://doi.org/10.1038/s41467-017-00552-1>. doi:10.1038/s41467-017-00552-1 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed 2017 ftoceanrep https://doi.org/10.1038/s41467-017-00552-1 2023-04-07T15:41:22Z Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades and climate scenarios suggest that sea ice may completely disappear during summer within the next about 50–100 years. Here we produce Arctic sea ice biomarker proxy records for the penultimate glacial (Marine Isotope Stage 6) and the subsequent last interglacial (Marine Isotope Stage 5e). The latter is a time interval when the high latitudes were significantly warmer than today. We document that even under such warmer climate conditions, sea ice existed in the central Arctic Ocean during summer, whereas sea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflow. Our proxy reconstruction of the last interglacial sea ice cover is supported by climate simulations, although some proxy data/model inconsistencies still exist. During late Marine Isotope Stage 6, polynya-type conditions occurred off the major ice sheets along the northern Barents and East Siberian continental margins, contradicting a giant Marine Isotope Stage 6 ice shelf that covered the entire Arctic Ocean. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Barents Sea Global warming Ice Shelf Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Barents Sea Nature Communications 8 1 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades and climate scenarios suggest that sea ice may completely disappear during summer within the next about 50–100 years. Here we produce Arctic sea ice biomarker proxy records for the penultimate glacial (Marine Isotope Stage 6) and the subsequent last interglacial (Marine Isotope Stage 5e). The latter is a time interval when the high latitudes were significantly warmer than today. We document that even under such warmer climate conditions, sea ice existed in the central Arctic Ocean during summer, whereas sea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflow. Our proxy reconstruction of the last interglacial sea ice cover is supported by climate simulations, although some proxy data/model inconsistencies still exist. During late Marine Isotope Stage 6, polynya-type conditions occurred off the major ice sheets along the northern Barents and East Siberian continental margins, contradicting a giant Marine Isotope Stage 6 ice shelf that covered the entire Arctic Ocean. |
format |
Article in Journal/Newspaper |
author |
Stein, Ruediger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit |
spellingShingle |
Stein, Ruediger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
author_facet |
Stein, Ruediger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit |
author_sort |
Stein, Ruediger |
title |
Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
title_short |
Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
title_full |
Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
title_fullStr |
Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
title_full_unstemmed |
Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
title_sort |
arctic ocean sea ice cover during the penultimate glacial and the last interglacial |
publisher |
Nature Research |
publishDate |
2017 |
url |
https://oceanrep.geomar.de/id/eprint/44288/ https://oceanrep.geomar.de/id/eprint/44288/1/s41467-017-00552-1.pdf https://doi.org/10.1038/s41467-017-00552-1 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Arctic Ocean Barents Sea Global warming Ice Shelf Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Barents Sea Global warming Ice Shelf Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/44288/1/s41467-017-00552-1.pdf Stein, R., Fahl, K., Gierz, P., Niessen, F. and Lohmann, G. (2017) Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial. Open Access Nature Communications, 8 (1). Art.Nr. 373. DOI 10.1038/s41467-017-00552-1 <https://doi.org/10.1038/s41467-017-00552-1>. doi:10.1038/s41467-017-00552-1 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-017-00552-1 |
container_title |
Nature Communications |
container_volume |
8 |
container_issue |
1 |
_version_ |
1766299100314075136 |