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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Online Access: | https://doi.org/10.3390/geosciences12080282 https://doaj.org/article/ed7c637b92584a6a9925c3bb3c5509c0 |
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ftdoajarticles:oai:doaj.org/article:ed7c637b92584a6a9925c3bb3c5509c0 2023-05-15T13:36:07+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 2022-07-01T00:00:00Z https://doi.org/10.3390/geosciences12080282 https://doaj.org/article/ed7c637b92584a6a9925c3bb3c5509c0 EN eng MDPI AG https://www.mdpi.com/2076-3263/12/8/282 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12080282 2076-3263 https://doaj.org/article/ed7c637b92584a6a9925c3bb3c5509c0 Geosciences, Vol 12, Iss 282, p 282 (2022) sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.3390/geosciences12080282 2022-12-30T20:44:15Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Antarctic Southern Ocean Geosciences 12 8 282 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean Geology QE1-996.5 |
spellingShingle |
sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean Geology QE1-996.5 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 Geology QE1-996.5 |
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 |
Article in Journal/Newspaper |
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 |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/geosciences12080282 https://doaj.org/article/ed7c637b92584a6a9925c3bb3c5509c0 |
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, Vol 12, Iss 282, p 282 (2022) |
op_relation |
https://www.mdpi.com/2076-3263/12/8/282 https://doaj.org/toc/2076-3263 doi:10.3390/geosciences12080282 2076-3263 https://doaj.org/article/ed7c637b92584a6a9925c3bb3c5509c0 |
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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1766074702527201280 |