First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean
International audience We use a Generalized Additive Model (GAM) to provide the first winter sea ice concentration record from two cores located within the southwest Pacific sector of the Southern Ocean. To compliment the application of GAM, a time series analysis on satellite records of sea ice con...
Published in: | Paleoceanography |
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Online Access: | https://hal.science/hal-02105554 https://hal.science/hal-02105554/document https://hal.science/hal-02105554/file/Ferry_Paleocean2015.pdf https://doi.org/10.1002/2014PA002764 |
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ftinsu:oai:HAL:hal-02105554v1 2023-06-18T03:37:50+02:00 First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean Ferry, Alexander, Crosta, Xavier Quilty, Patrick, Fink, David Howard, William Armand, Leanne Department of Biological Sciences North Ryde Macquarie University Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) University of Tasmania Hobart, Australia (UTAS) Australian Nuclear Science and Technology Organisation Australie (ANSTO) University of Melbourne 2015 https://hal.science/hal-02105554 https://hal.science/hal-02105554/document https://hal.science/hal-02105554/file/Ferry_Paleocean2015.pdf https://doi.org/10.1002/2014PA002764 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2014PA002764 hal-02105554 https://hal.science/hal-02105554 https://hal.science/hal-02105554/document https://hal.science/hal-02105554/file/Ferry_Paleocean2015.pdf doi:10.1002/2014PA002764 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.science/hal-02105554 Paleoceanography, 2015, 30 (11), pp.1525-1539. ⟨10.1002/2014PA002764⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.1002/2014PA002764 2023-06-05T23:55:23Z International audience We use a Generalized Additive Model (GAM) to provide the first winter sea ice concentration record from two cores located within the southwest Pacific sector of the Southern Ocean. To compliment the application of GAM, a time series analysis on satellite records of sea ice concentration data was used to extend the standard 13.25 year time series used for paleoceanography. After comparing GAM sea ice estimates with previously published paleo sea ice data we then focus on a new paleo winter sea ice record for marine sediment core E27-23 (59°37.1'S, 155°14.3'E), allowing us to provide a more comprehensive view of winter sea ice dynamics for the southwest Pacific Ocean. The paleo winter sea ice concentration estimates provide the first suggestion that winter sea ice within the southwestern Pacific might have expanded during the Antarctic Cold Reversal. Throughout the Holocene, core E27-23 documents millennial scale variability in paleo winter sea ice coverage within the southwest Pacific. Holocene winter sea ice expansion may have resulted from the Laurentide Ice Sheet deglaciation, increased intensity of the westerly winds, as well as a northern migration of the Subtropical and/or Sub-Antarctic Fronts. Brief consideration is given to the development of a paleo summer sea ice proxy. We conclude that there is no evidence that summer sea ice ever existed at core sites SO136-111 and E27-23 over the last 220 and 52,000 years, respectively. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Sea ice Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Antarctic Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) Pacific Southern Ocean The Antarctic Paleoceanography 30 11 1525 1539 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Ferry, Alexander, Crosta, Xavier Quilty, Patrick, Fink, David Howard, William Armand, Leanne First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience We use a Generalized Additive Model (GAM) to provide the first winter sea ice concentration record from two cores located within the southwest Pacific sector of the Southern Ocean. To compliment the application of GAM, a time series analysis on satellite records of sea ice concentration data was used to extend the standard 13.25 year time series used for paleoceanography. After comparing GAM sea ice estimates with previously published paleo sea ice data we then focus on a new paleo winter sea ice record for marine sediment core E27-23 (59°37.1'S, 155°14.3'E), allowing us to provide a more comprehensive view of winter sea ice dynamics for the southwest Pacific Ocean. The paleo winter sea ice concentration estimates provide the first suggestion that winter sea ice within the southwestern Pacific might have expanded during the Antarctic Cold Reversal. Throughout the Holocene, core E27-23 documents millennial scale variability in paleo winter sea ice coverage within the southwest Pacific. Holocene winter sea ice expansion may have resulted from the Laurentide Ice Sheet deglaciation, increased intensity of the westerly winds, as well as a northern migration of the Subtropical and/or Sub-Antarctic Fronts. Brief consideration is given to the development of a paleo summer sea ice proxy. We conclude that there is no evidence that summer sea ice ever existed at core sites SO136-111 and E27-23 over the last 220 and 52,000 years, respectively. |
author2 |
Department of Biological Sciences North Ryde Macquarie University Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École Pratique des Hautes Études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) University of Tasmania Hobart, Australia (UTAS) Australian Nuclear Science and Technology Organisation Australie (ANSTO) University of Melbourne |
format |
Article in Journal/Newspaper |
author |
Ferry, Alexander, Crosta, Xavier Quilty, Patrick, Fink, David Howard, William Armand, Leanne |
author_facet |
Ferry, Alexander, Crosta, Xavier Quilty, Patrick, Fink, David Howard, William Armand, Leanne |
author_sort |
Ferry, Alexander, |
title |
First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
title_short |
First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
title_full |
First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
title_fullStr |
First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
title_full_unstemmed |
First records of winter sea ice concentration in the southwest Pacific sector of the Southern Ocean |
title_sort |
first records of winter sea ice concentration in the southwest pacific sector of the southern ocean |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-02105554 https://hal.science/hal-02105554/document https://hal.science/hal-02105554/file/Ferry_Paleocean2015.pdf https://doi.org/10.1002/2014PA002764 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Antarctic Gam Pacific Southern Ocean The Antarctic |
geographic_facet |
Antarctic Gam Pacific Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Ice Sheet Sea ice Southern Ocean |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.science/hal-02105554 Paleoceanography, 2015, 30 (11), pp.1525-1539. ⟨10.1002/2014PA002764⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014PA002764 hal-02105554 https://hal.science/hal-02105554 https://hal.science/hal-02105554/document https://hal.science/hal-02105554/file/Ferry_Paleocean2015.pdf doi:10.1002/2014PA002764 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2014PA002764 |
container_title |
Paleoceanography |
container_volume |
30 |
container_issue |
11 |
container_start_page |
1525 |
op_container_end_page |
1539 |
_version_ |
1769010612076019712 |