Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea
The causes of the recent increase in Antarctic sea ice extent, characterised by large regional contrasts and decadal variations, remain unclear. In the Ross Sea, where such a sea ice increase is reported, 50% of the sea ice is produced within wind-sustained latent-heat polynyas. Combining informatio...
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ftpubmed:oai:pubmedcentral.nih.gov:5673891 2023-05-15T13:36:40+02:00 Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea Mezgec, K. Stenni, B. Crosta, X. Masson-Delmotte, V. Baroni, C. Braida, M. Ciardini, V. Colizza, E. Melis, R. Salvatore, M. C. Severi, M. Scarchilli, C. Traversi, R. Udisti, R. Frezzotti, M. 2017-11-06 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673891/ http://www.ncbi.nlm.nih.gov/pubmed/29109395 https://doi.org/10.1038/s41467-017-01455-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673891/ http://www.ncbi.nlm.nih.gov/pubmed/29109395 http://dx.doi.org/10.1038/s41467-017-01455-x © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/s41467-017-01455-x 2017-11-12T01:23:44Z The causes of the recent increase in Antarctic sea ice extent, characterised by large regional contrasts and decadal variations, remain unclear. In the Ross Sea, where such a sea ice increase is reported, 50% of the sea ice is produced within wind-sustained latent-heat polynyas. Combining information from marine diatom records and sea salt sodium and water isotope ice core records, we here document contrasting patterns in sea ice variations between coastal and open sea areas in Western Ross Sea over the current interglacial period. Since about 3600 years before present, an increase in the efficiency of regional latent-heat polynyas resulted in more coastal sea ice, while sea ice extent decreased overall. These past changes coincide with remarkable optima or minima in the abundances of penguins, silverfish and seal remains, confirming the high sensitivity of marine ecosystems to environmental and especially coastal sea ice conditions. Text Antarc* Antarctic ice core Ross Sea Sea ice PubMed Central (PMC) Antarctic Ross Sea Nature Communications 8 1 |
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Article Mezgec, K. Stenni, B. Crosta, X. Masson-Delmotte, V. Baroni, C. Braida, M. Ciardini, V. Colizza, E. Melis, R. Salvatore, M. C. Severi, M. Scarchilli, C. Traversi, R. Udisti, R. Frezzotti, M. Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
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description |
The causes of the recent increase in Antarctic sea ice extent, characterised by large regional contrasts and decadal variations, remain unclear. In the Ross Sea, where such a sea ice increase is reported, 50% of the sea ice is produced within wind-sustained latent-heat polynyas. Combining information from marine diatom records and sea salt sodium and water isotope ice core records, we here document contrasting patterns in sea ice variations between coastal and open sea areas in Western Ross Sea over the current interglacial period. Since about 3600 years before present, an increase in the efficiency of regional latent-heat polynyas resulted in more coastal sea ice, while sea ice extent decreased overall. These past changes coincide with remarkable optima or minima in the abundances of penguins, silverfish and seal remains, confirming the high sensitivity of marine ecosystems to environmental and especially coastal sea ice conditions. |
format |
Text |
author |
Mezgec, K. Stenni, B. Crosta, X. Masson-Delmotte, V. Baroni, C. Braida, M. Ciardini, V. Colizza, E. Melis, R. Salvatore, M. C. Severi, M. Scarchilli, C. Traversi, R. Udisti, R. Frezzotti, M. |
author_facet |
Mezgec, K. Stenni, B. Crosta, X. Masson-Delmotte, V. Baroni, C. Braida, M. Ciardini, V. Colizza, E. Melis, R. Salvatore, M. C. Severi, M. Scarchilli, C. Traversi, R. Udisti, R. Frezzotti, M. |
author_sort |
Mezgec, K. |
title |
Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
title_short |
Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
title_full |
Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
title_fullStr |
Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
title_full_unstemmed |
Holocene sea ice variability driven by wind and polynya efficiency in the Ross Sea |
title_sort |
holocene sea ice variability driven by wind and polynya efficiency in the ross sea |
publisher |
Nature Publishing Group UK |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673891/ http://www.ncbi.nlm.nih.gov/pubmed/29109395 https://doi.org/10.1038/s41467-017-01455-x |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic ice core Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic ice core Ross Sea Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5673891/ http://www.ncbi.nlm.nih.gov/pubmed/29109395 http://dx.doi.org/10.1038/s41467-017-01455-x |
op_rights |
© The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-017-01455-x |
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Nature Communications |
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8 |
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1 |
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