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...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-07-01
|
| Series: | Geosciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3263/12/8/282 |
| _version_ | 1797445171168673792 |
|---|---|
| author | Claire S. Allen Zelna C. Weich |
| author_facet | Claire S. Allen Zelna C. Weich |
| author_sort | Claire S. Allen |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T13:22:53Z |
| format | Article |
| id | doaj.art-ed7c637b92584a6a9925c3bb3c5509c0 |
| institution | Directory Open Access Journal |
| issn | 2076-3263 |
| language | English |
| last_indexed | 2024-03-09T13:22:53Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Geosciences |
| spelling | doaj.art-ed7c637b92584a6a9925c3bb3c5509c02023-11-30T21:28:32ZengMDPI AGGeosciences2076-32632022-07-0112828210.3390/geosciences12080282Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 YearsClaire S. Allen0Zelna C. Weich1British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UKBritish Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UKAntarctic 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.https://www.mdpi.com/2076-3263/12/8/282sea iceAntarcticalate Holocenemarine sedimentsdiatomsSouthern Ocean |
| spellingShingle | Claire S. Allen Zelna C. Weich Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years Geosciences sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean |
| title | 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_short | 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 |
| topic | sea ice Antarctica late Holocene marine sediments diatoms Southern Ocean |
| url | https://www.mdpi.com/2076-3263/12/8/282 |
| work_keys_str_mv | AT clairesallen varietyanddistributionofdiatombasedseaiceproxiesinantarcticmarinesedimentsofthepast2000years AT zelnacweich varietyanddistributionofdiatombasedseaiceproxiesinantarcticmarinesedimentsofthepast2000years |