Evidence for ice-free summers in the late Miocene central Arctic Ocean
Published version. Source at http://dx.doi.org/10.1038/ncomms11148 Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in the Earth’s climate system, the knowledge of its long-term climate history remains very limited due to the restricted number of pr...
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Online Access: | https://hdl.handle.net/10037/10694 https://doi.org/10.1038/ncomms11148 |
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ftunivtroemsoe:oai:munin.uit.no:10037/10694 2023-05-15T14:23:34+02:00 Evidence for ice-free summers in the late Miocene central Arctic Ocean Stein, Ruediger Fahl, Kirsten Schreck, Michael Knorr, Gregor Niessen, Frank Forwick, Matthias Gebhardt, Catalina Jensen, Laura Kaminski, Michael Kopf, Achim Matthiessen, Jens Jokat, Wilfried Lohmann, Gerrit 2016-04-04 https://hdl.handle.net/10037/10694 https://doi.org/10.1038/ncomms11148 eng eng Nature Publishing Group Nature Communications Stein R. et.al.: Evidence for ice-free summers in the late Miocene central Arctic Ocean. Nature Communications. 2016;7 FRIDAID 1417330 doi:10.1038/ncomms11148 2041-1723 https://hdl.handle.net/10037/10694 openAccess VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Journal article Tidsskriftartikkel Peer reviewed 2016 ftunivtroemsoe https://doi.org/10.1038/ncomms11148 2021-06-25T17:55:03Z Published version. Source at http://dx.doi.org/10.1038/ncomms11148 Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in the Earth’s climate system, the knowledge of its long-term climate history remains very limited due to the restricted number of pre-Quaternary sedimentary records. During Polarstern Expedition PS87/2014, we discovered multiple submarine landslides along Lomonosov Ridge. Removal of younger sediments from steep headwalls has led to exhumation of Miocene sediments close to the seafloor. Here we document the presence of IP25 as a proxy for spring sea-ice cover and alkenone-based summer sea-surface temperatures 44 °C that support a seasonal sea-ice cover with an ice-free summer season being predominant during the late Miocene in the central Arctic Ocean. A comparison of our proxy data with Miocene climate simulations seems to favour either relatively high late Miocene atmospheric CO2 concentrations and/or a weak sensitivity of the model to simulate the magnitude of high-latitude warming in a warmer than modern climate. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Nature Communications 7 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
spellingShingle |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 Stein, Ruediger Fahl, Kirsten Schreck, Michael Knorr, Gregor Niessen, Frank Forwick, Matthias Gebhardt, Catalina Jensen, Laura Kaminski, Michael Kopf, Achim Matthiessen, Jens Jokat, Wilfried Lohmann, Gerrit Evidence for ice-free summers in the late Miocene central Arctic Ocean |
topic_facet |
VDP::Matematikk og Naturvitenskap: 400::Geofag: 450 VDP::Mathematics and natural science: 400::Geosciences: 450 |
description |
Published version. Source at http://dx.doi.org/10.1038/ncomms11148 Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in the Earth’s climate system, the knowledge of its long-term climate history remains very limited due to the restricted number of pre-Quaternary sedimentary records. During Polarstern Expedition PS87/2014, we discovered multiple submarine landslides along Lomonosov Ridge. Removal of younger sediments from steep headwalls has led to exhumation of Miocene sediments close to the seafloor. Here we document the presence of IP25 as a proxy for spring sea-ice cover and alkenone-based summer sea-surface temperatures 44 °C that support a seasonal sea-ice cover with an ice-free summer season being predominant during the late Miocene in the central Arctic Ocean. A comparison of our proxy data with Miocene climate simulations seems to favour either relatively high late Miocene atmospheric CO2 concentrations and/or a weak sensitivity of the model to simulate the magnitude of high-latitude warming in a warmer than modern climate. |
format |
Article in Journal/Newspaper |
author |
Stein, Ruediger Fahl, Kirsten Schreck, Michael Knorr, Gregor Niessen, Frank Forwick, Matthias Gebhardt, Catalina Jensen, Laura Kaminski, Michael Kopf, Achim Matthiessen, Jens Jokat, Wilfried Lohmann, Gerrit |
author_facet |
Stein, Ruediger Fahl, Kirsten Schreck, Michael Knorr, Gregor Niessen, Frank Forwick, Matthias Gebhardt, Catalina Jensen, Laura Kaminski, Michael Kopf, Achim Matthiessen, Jens Jokat, Wilfried Lohmann, Gerrit |
author_sort |
Stein, Ruediger |
title |
Evidence for ice-free summers in the late Miocene central Arctic Ocean |
title_short |
Evidence for ice-free summers in the late Miocene central Arctic Ocean |
title_full |
Evidence for ice-free summers in the late Miocene central Arctic Ocean |
title_fullStr |
Evidence for ice-free summers in the late Miocene central Arctic Ocean |
title_full_unstemmed |
Evidence for ice-free summers in the late Miocene central Arctic Ocean |
title_sort |
evidence for ice-free summers in the late miocene central arctic ocean |
publisher |
Nature Publishing Group |
publishDate |
2016 |
url |
https://hdl.handle.net/10037/10694 https://doi.org/10.1038/ncomms11148 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Lomonosov Ridge Sea ice |
op_relation |
Nature Communications Stein R. et.al.: Evidence for ice-free summers in the late Miocene central Arctic Ocean. Nature Communications. 2016;7 FRIDAID 1417330 doi:10.1038/ncomms11148 2041-1723 https://hdl.handle.net/10037/10694 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1038/ncomms11148 |
container_title |
Nature Communications |
container_volume |
7 |
container_issue |
1 |
_version_ |
1766296089108938752 |