Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N
Abstract The cryospheric response to climatic warming responsible for recent Arctic sea ice decline can be elucidated using marine geological archives which offer an important long-term perspective. The Holocene Thermal Maximum, between 10 and 6 thousand years ago, provides an opportunity to investi...
Published in: | Communications Earth & Environment |
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2021
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Online Access: | http://dx.doi.org/10.1038/s43247-021-00191-x http://www.nature.com/articles/s43247-021-00191-x.pdf http://www.nature.com/articles/s43247-021-00191-x |
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crspringernat:10.1038/s43247-021-00191-x 2023-05-15T15:04:47+02:00 Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N Pieńkowski, Anna J. Husum, Katrine Belt, Simon T. Ninnemann, Ulysses Köseoğlu, Denizcan Divine, Dmitry V. Smik, Lukas Knies, Jochen Hogan, Kelly Noormets, Riko 2021 http://dx.doi.org/10.1038/s43247-021-00191-x http://www.nature.com/articles/s43247-021-00191-x.pdf http://www.nature.com/articles/s43247-021-00191-x en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 General Earth and Planetary Sciences General Environmental Science journal-article 2021 crspringernat https://doi.org/10.1038/s43247-021-00191-x 2022-01-04T15:47:23Z Abstract The cryospheric response to climatic warming responsible for recent Arctic sea ice decline can be elucidated using marine geological archives which offer an important long-term perspective. The Holocene Thermal Maximum, between 10 and 6 thousand years ago, provides an opportunity to investigate sea ice during a warmer-than-present interval. Here we use organic biomarkers and benthic foraminiferal stable isotope data from two sediment cores in the northernmost Barents Sea (>80 °N) to reconstruct seasonal sea ice between 11.7 and 9.1 thousand years ago. We identify the continued persistence of sea-ice biomarkers which suggest spring sea ice concentrations as high as 55%. During the same period, high foraminiferal oxygen stable isotopes and elevated phytoplankton biomarker concentrations indicate the influence of warm Atlantic-derived bottom water and peak biological productivity, respectively. We conclude that seasonal sea ice persisted in the northern Barents Sea during the Holocene Thermal Maximum, despite warmer-than-present conditions and Atlantic Water inflow. Article in Journal/Newspaper Arctic Barents Sea Foraminifera* Phytoplankton Sea ice Springer Nature (via Crossref) Arctic Barents Sea Communications Earth & Environment 2 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science Pieńkowski, Anna J. Husum, Katrine Belt, Simon T. Ninnemann, Ulysses Köseoğlu, Denizcan Divine, Dmitry V. Smik, Lukas Knies, Jochen Hogan, Kelly Noormets, Riko Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
Abstract The cryospheric response to climatic warming responsible for recent Arctic sea ice decline can be elucidated using marine geological archives which offer an important long-term perspective. The Holocene Thermal Maximum, between 10 and 6 thousand years ago, provides an opportunity to investigate sea ice during a warmer-than-present interval. Here we use organic biomarkers and benthic foraminiferal stable isotope data from two sediment cores in the northernmost Barents Sea (>80 °N) to reconstruct seasonal sea ice between 11.7 and 9.1 thousand years ago. We identify the continued persistence of sea-ice biomarkers which suggest spring sea ice concentrations as high as 55%. During the same period, high foraminiferal oxygen stable isotopes and elevated phytoplankton biomarker concentrations indicate the influence of warm Atlantic-derived bottom water and peak biological productivity, respectively. We conclude that seasonal sea ice persisted in the northern Barents Sea during the Holocene Thermal Maximum, despite warmer-than-present conditions and Atlantic Water inflow. |
format |
Article in Journal/Newspaper |
author |
Pieńkowski, Anna J. Husum, Katrine Belt, Simon T. Ninnemann, Ulysses Köseoğlu, Denizcan Divine, Dmitry V. Smik, Lukas Knies, Jochen Hogan, Kelly Noormets, Riko |
author_facet |
Pieńkowski, Anna J. Husum, Katrine Belt, Simon T. Ninnemann, Ulysses Köseoğlu, Denizcan Divine, Dmitry V. Smik, Lukas Knies, Jochen Hogan, Kelly Noormets, Riko |
author_sort |
Pieńkowski, Anna J. |
title |
Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
title_short |
Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
title_full |
Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
title_fullStr |
Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
title_full_unstemmed |
Seasonal sea ice persisted through the Holocene Thermal Maximum at 80°N |
title_sort |
seasonal sea ice persisted through the holocene thermal maximum at 80°n |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s43247-021-00191-x http://www.nature.com/articles/s43247-021-00191-x.pdf http://www.nature.com/articles/s43247-021-00191-x |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Foraminifera* Phytoplankton Sea ice |
genre_facet |
Arctic Barents Sea Foraminifera* Phytoplankton Sea ice |
op_source |
Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-021-00191-x |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
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1766336506408992768 |