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...
Published in: | Nature Communications |
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ftuniveneziairis:oai:iris.unive.it:10278/3694427 2024-04-14T08:04:12+00:00 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. 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 http://hdl.handle.net/10278/3694427 https://doi.org/10.1038/s41467-017-01455-x http://www.nature.com/ncomms/index.html eng eng info:eu-repo/semantics/altIdentifier/pmid/29109395 info:eu-repo/semantics/altIdentifier/wos/WOS:000414422100019 volume:8 journal:NATURE COMMUNICATIONS http://hdl.handle.net/10278/3694427 doi:10.1038/s41467-017-01455-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85032892223 http://www.nature.com/ncomms/index.html info:eu-repo/semantics/openAccess Chemistry (all) Biochemistry Genetics and Molecular Biology (all) Physics and Astronomy (all) Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2017 ftuniveneziairis https://doi.org/10.1038/s41467-017-01455-x 2024-03-21T18:06:12Z 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. Article in Journal/Newspaper Antarc* Antarctic ice core Ross Sea Sea ice Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic Ross Sea Nature Communications 8 1 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Chemistry (all) Biochemistry Genetics and Molecular Biology (all) Physics and Astronomy (all) Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Chemistry (all) Biochemistry Genetics and Molecular Biology (all) Physics and Astronomy (all) Settore GEO/08 - Geochimica e Vulcanologia 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 |
topic_facet |
Chemistry (all) Biochemistry Genetics and Molecular Biology (all) Physics and Astronomy (all) Settore GEO/08 - Geochimica e Vulcanologia |
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. |
author2 |
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. |
format |
Article in Journal/Newspaper |
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 |
publishDate |
2017 |
url |
http://hdl.handle.net/10278/3694427 https://doi.org/10.1038/s41467-017-01455-x http://www.nature.com/ncomms/index.html |
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 |
info:eu-repo/semantics/altIdentifier/pmid/29109395 info:eu-repo/semantics/altIdentifier/wos/WOS:000414422100019 volume:8 journal:NATURE COMMUNICATIONS http://hdl.handle.net/10278/3694427 doi:10.1038/s41467-017-01455-x info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85032892223 http://www.nature.com/ncomms/index.html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-017-01455-x |
container_title |
Nature Communications |
container_volume |
8 |
container_issue |
1 |
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1796300629806678016 |