Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years
Dramatic changes in sea ice have been observed in both poles in recent decades. However, the observational period for sea ice is short, and the climate models tasked with predicting future change in sea ice struggle to capture the current Antarctic trends. Paleoclimate archives, from marine sediment...
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Online Access: | https://doi.org/10.3390/geosciences9120506 https://archimer.ifremer.fr/doc/00595/70709/68916.pdf https://archimer.ifremer.fr/doc/00595/70709/ |
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fttriple:oai:gotriple.eu:10670/1.9coris 2023-05-15T14:00:30+02:00 Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years Thomas, Elizabeh R Allen, Claire S Etourneau, Johan King, Amy Cf Severi, Mirko Winton, V. Holly L. Mueller, Juliane Crosta, Xavier Peck, Victoria L. https://doi.org/10.3390/geosciences9120506 https://archimer.ifremer.fr/doc/00595/70709/68916.pdf https://archimer.ifremer.fr/doc/00595/70709/ en eng MDPI AG doi:10.3390/geosciences9120506 10670/1.9coris https://archimer.ifremer.fr/doc/00595/70709/68916.pdf https://archimer.ifremer.fr/doc/00595/70709/ other Archimer, archive institutionnelle de l'Ifremer Geosciences (2076-3263) (MDPI AG), 2019-12 , Vol. 9 , N. 12 , P. 506 (33p.) geo envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.3390/geosciences9120506 2023-01-22T18:28:13Z Dramatic changes in sea ice have been observed in both poles in recent decades. However, the observational period for sea ice is short, and the climate models tasked with predicting future change in sea ice struggle to capture the current Antarctic trends. Paleoclimate archives, from marine sedimentary records and coastal Antarctic ice cores, provide a means of understanding sea ice variability and its drivers over decadal to centennial timescales. In this study, we collate published records of Antarctic sea ice over the past 2000 years (2 ka). We evaluate the current proxies and explore the potential of combining marine and ice core records to produce multi-archive reconstructions. Despite identifying 92 sea ice reconstructions, the spatial and temporal resolution is only sufficient to reconstruct circum-Antarctic sea ice during the 20th century, not the full 2 ka. Our synthesis reveals a 90 year trend of increasing sea ice in the Ross Sea and declining sea ice in the Bellingshausen, comparable with observed trends since 1979. Reconstructions in the Weddell Sea, the Western Pacific and the Indian Ocean reveal small negative trends in sea ice during the 20th century (1900–1990), in contrast to the observed sea ice expansion in these regions since 1979. Text Antarc* Antarctic ice core Ross Sea Sea ice Weddell Sea Unknown Antarctic Indian Pacific Ross Sea Weddell Weddell Sea Geosciences 9 12 506 |
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geo envir Thomas, Elizabeh R Allen, Claire S Etourneau, Johan King, Amy Cf Severi, Mirko Winton, V. Holly L. Mueller, Juliane Crosta, Xavier Peck, Victoria L. Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
topic_facet |
geo envir |
description |
Dramatic changes in sea ice have been observed in both poles in recent decades. However, the observational period for sea ice is short, and the climate models tasked with predicting future change in sea ice struggle to capture the current Antarctic trends. Paleoclimate archives, from marine sedimentary records and coastal Antarctic ice cores, provide a means of understanding sea ice variability and its drivers over decadal to centennial timescales. In this study, we collate published records of Antarctic sea ice over the past 2000 years (2 ka). We evaluate the current proxies and explore the potential of combining marine and ice core records to produce multi-archive reconstructions. Despite identifying 92 sea ice reconstructions, the spatial and temporal resolution is only sufficient to reconstruct circum-Antarctic sea ice during the 20th century, not the full 2 ka. Our synthesis reveals a 90 year trend of increasing sea ice in the Ross Sea and declining sea ice in the Bellingshausen, comparable with observed trends since 1979. Reconstructions in the Weddell Sea, the Western Pacific and the Indian Ocean reveal small negative trends in sea ice during the 20th century (1900–1990), in contrast to the observed sea ice expansion in these regions since 1979. |
format |
Text |
author |
Thomas, Elizabeh R Allen, Claire S Etourneau, Johan King, Amy Cf Severi, Mirko Winton, V. Holly L. Mueller, Juliane Crosta, Xavier Peck, Victoria L. |
author_facet |
Thomas, Elizabeh R Allen, Claire S Etourneau, Johan King, Amy Cf Severi, Mirko Winton, V. Holly L. Mueller, Juliane Crosta, Xavier Peck, Victoria L. |
author_sort |
Thomas, Elizabeh R |
title |
Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
title_short |
Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
title_full |
Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
title_fullStr |
Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
title_full_unstemmed |
Antarctic Sea Ice Proxies from Marine and Ice Core Archives Suitable for Reconstructing Sea Ice over the past 2000 Years |
title_sort |
antarctic sea ice proxies from marine and ice core archives suitable for reconstructing sea ice over the past 2000 years |
publisher |
MDPI AG |
url |
https://doi.org/10.3390/geosciences9120506 https://archimer.ifremer.fr/doc/00595/70709/68916.pdf https://archimer.ifremer.fr/doc/00595/70709/ |
geographic |
Antarctic Indian Pacific Ross Sea Weddell Weddell Sea |
geographic_facet |
Antarctic Indian Pacific Ross Sea Weddell Weddell Sea |
genre |
Antarc* Antarctic ice core Ross Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic ice core Ross Sea Sea ice Weddell Sea |
op_source |
Archimer, archive institutionnelle de l'Ifremer Geosciences (2076-3263) (MDPI AG), 2019-12 , Vol. 9 , N. 12 , P. 506 (33p.) |
op_relation |
doi:10.3390/geosciences9120506 10670/1.9coris https://archimer.ifremer.fr/doc/00595/70709/68916.pdf https://archimer.ifremer.fr/doc/00595/70709/ |
op_rights |
other |
op_doi |
https://doi.org/10.3390/geosciences9120506 |
container_title |
Geosciences |
container_volume |
9 |
container_issue |
12 |
container_start_page |
506 |
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1766269669336940544 |