TY - JOUR T1 - Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years A1 - Allen,Claire S. A1 - Weich,Zelna C. AD - British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK AD - School of Earth and Environmental Sciences, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK UR - https://archimer.ifremer.fr/doc/00785/89727/ DO - 10.3390/geosciences12080282 KW - sea ice KW - Antarctica KW - late Holocene KW - marine sediments KW - diatoms KW - Southern Ocean N2 - 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. Y1 - 2022/08 PB - MDPI AG JF - Geosciences SN - 2076-3263 VL - 12 IS - 8 ID - 89727 ER -