Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years
Antarctic sea ice is an essential component of the global climate system. Reconstructions of Antarctic sea ice from marine sediment cores are a vital resource to improve the representation of Antarctic sea ice in climate models and to better understand natural variability in sea ice over centennial...
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2022
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Online Access: | https://doi.org/10.3390/geosciences12080282 |
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ftmdpi:oai:mdpi.com:/2076-3263/12/8/282/ 2023-08-20T04:02:23+02:00 Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years Claire S. Allen Zelna C. Weich agris 2022-07-22 application/pdf https://doi.org/10.3390/geosciences12080282 EN eng Multidisciplinary Digital Publishing Institute Climate https://dx.doi.org/10.3390/geosciences12080282 https://creativecommons.org/licenses/by/4.0/ Geosciences; Volume 12; Issue 8; Pages: 282 sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean Text 2022 ftmdpi https://doi.org/10.3390/geosciences12080282 2023-08-01T05:48:18Z Antarctic sea ice is an essential component of the global climate system. Reconstructions of Antarctic sea ice from marine sediment cores are a vital resource to improve the representation of Antarctic sea ice in climate models and to better understand natural variability in sea ice over centennial and sub-centennial timescales. The Thomas et al. (2019) review of Antarctic sea ice reconstructions from ice and marine cores highlighted the prominence of diatom-based proxies in this research. Here, focusing solely on the diatom-based proxy records in marine sediments, we review the composition of proxies, their advantages and limitations, as well as the spatial and temporal cover of the records over the past 2 ka in order to assess the scope for future assimilation and standardization. The archive comprises 112 records from 68 marine cores, with proxies based on more than 30 different combinations of diatom taxa as well as the relatively new, highly branched isoprenoid (HBI) biomarkers. Text Antarc* Antarctic Antarctica Sea ice Southern Ocean MDPI Open Access Publishing Antarctic Southern Ocean Geosciences 12 8 282 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean |
spellingShingle |
sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean Claire S. Allen Zelna C. Weich Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
topic_facet |
sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean |
description |
Antarctic sea ice is an essential component of the global climate system. Reconstructions of Antarctic sea ice from marine sediment cores are a vital resource to improve the representation of Antarctic sea ice in climate models and to better understand natural variability in sea ice over centennial and sub-centennial timescales. The Thomas et al. (2019) review of Antarctic sea ice reconstructions from ice and marine cores highlighted the prominence of diatom-based proxies in this research. Here, focusing solely on the diatom-based proxy records in marine sediments, we review the composition of proxies, their advantages and limitations, as well as the spatial and temporal cover of the records over the past 2 ka in order to assess the scope for future assimilation and standardization. The archive comprises 112 records from 68 marine cores, with proxies based on more than 30 different combinations of diatom taxa as well as the relatively new, highly branched isoprenoid (HBI) biomarkers. |
format |
Text |
author |
Claire S. Allen Zelna C. Weich |
author_facet |
Claire S. Allen Zelna C. Weich |
author_sort |
Claire S. Allen |
title |
Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
title_short |
Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
title_full |
Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
title_fullStr |
Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
title_full_unstemmed |
Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years |
title_sort |
variety and distribution of diatom-based sea ice proxies in antarctic marine sediments of the past 2000 years |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12080282 |
op_coverage |
agris |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_source |
Geosciences; Volume 12; Issue 8; Pages: 282 |
op_relation |
Climate https://dx.doi.org/10.3390/geosciences12080282 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/geosciences12080282 |
container_title |
Geosciences |
container_volume |
12 |
container_issue |
8 |
container_start_page |
282 |
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1774712805127094272 |