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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ftawi:oai:epic.awi.de:45571 2024-09-15T17:51:23+00:00 Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial Stein, Rüdiger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit 2017 https://epic.awi.de/id/eprint/45571/ https://hdl.handle.net/10013/epic.51660 unknown Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 , Gierz, P. orcid:0000-0002-4512-087X , Niessen, F. orcid:0000-0001-6453-0594 and Lohmann, G. orcid:0000-0003-2089-733X (2017) Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial , Nature Communications, (373) . doi:10.1038/s41467-017-00552-1 <https://doi.org/10.1038/s41467-017-00552-1> , hdl:10013/epic.51660 EPIC3Nature Communications, (373), ISSN: 8 Article isiRev 2017 ftawi https://doi.org/10.1038/s41467-017-00552-1 2024-06-24T04:18:50Z 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 Ocean Barents Sea Global warming Ice Shelf Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Nature Communications 8 1 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
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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, Rüdiger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit |
spellingShingle |
Stein, Rüdiger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial |
author_facet |
Stein, Rüdiger Fahl, Kirsten Gierz, Paul Niessen, Frank Lohmann, Gerrit |
author_sort |
Stein, Rüdiger |
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 |
publishDate |
2017 |
url |
https://epic.awi.de/id/eprint/45571/ https://hdl.handle.net/10013/epic.51660 |
genre |
Arctic Arctic Ocean Barents Sea Global warming Ice Shelf Sea ice |
genre_facet |
Arctic Arctic Ocean Barents Sea Global warming Ice Shelf Sea ice |
op_source |
EPIC3Nature Communications, (373), ISSN: 8 |
op_relation |
Stein, R. orcid:0000-0002-4453-9564 , Fahl, K. orcid:0000-0001-9317-4656 , Gierz, P. orcid:0000-0002-4512-087X , Niessen, F. orcid:0000-0001-6453-0594 and Lohmann, G. orcid:0000-0003-2089-733X (2017) Arctic Ocean sea ice cover during the penultimate glacial and the last interglacial , Nature Communications, (373) . doi:10.1038/s41467-017-00552-1 <https://doi.org/10.1038/s41467-017-00552-1> , hdl:10013/epic.51660 |
op_doi |
https://doi.org/10.1038/s41467-017-00552-1 |
container_title |
Nature Communications |
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8 |
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1 |
_version_ |
1810293258534780928 |