Publication Date:
2024-01-26
Description:
Antarctic sea ice forms a critical part of the Southern Ocean and global climate system. The behaviour of Antarctic sea ice throughout the last glacial-interglacial (G-IG) cycle (12,000-130,000 years) allows us to investigate the interactions between sea ice and climate under a large range of mean climate states. Understanding both temporal and spatial variations in Antarctic sea ice across a G-IG cycle is crucial to better understanding the G-IG regulation of atmospheric CO2, ocean circulation, nutrient cycling and productivity. Published qualitative and quantitative records of G-IG sea-ice, which cover at least 30,000 of the last 150,000 years, are compiled from twenty four marine sediment cores. All records include the combined relative abundances of the two sea-ice related diatoms Fragilariopsis curta and F. cylindrus (FCC). The FCC proxy is a qualitative indicator of winter sea-ice presence (Gersonde and Zielinski, 2000). Fourteen of the core records also have quantitative reconstructions of winter sea-ice concentrations (WSIC) and/or sea-ice duration (SID). These quantitative reconstructions were produced by applying a modern analog technique transfer function (Crosta et al., 1998; Esper & Gersonde 2014) to the preserved diatom species assemblages.
Keywords:
177-1093; 177-1094; 20; AGE; ANT-IX/4; ANT-VI/3; ANT-VIII/3; ANT-X/5; ANT-XI/2; ANT-XI/4; ANT-XVIII/5a; ANT-XXII/4; ANT-XXVI/2; Atlantic Indik Ridge; Atlantic Ridge; Calculated, see reference(s); COMPCORE; Composite Core; Conrad Rise; Core; CORE; DEPTH, sediment/rock; Diatoms; Eastern Weddell Sea, Southern Ocean; ELT27; ELT27.023-PC; Eltanin; Event label; Fragilariopsis curta and Fragilariopsis cylindrus; GC; Glacial - Interglacial; Gravity corer; Gravity corer (Kiel type); Joides Resolution; KL; Leg177; marine sediments; PAGES_C-SIDE; Past Global Changes - Cycles of Sea-Ice Dynamics in the Earth system; PC; Piston corer; Piston corer (BGR type); Polarstern; PS12; PS12/553; PS16; PS16/311; PS16/345; PS1652-2; PS1768-8; PS1778-5; PS18; PS18/260; PS2102-2; PS22/769; PS22 06AQANTX_5; PS2276-4; PS2499-5; PS2606-6; PS28; PS28/314; PS30; PS30/144; PS58; PS58/271-1; PS67; PS67/197-1; PS67/219-1; PS75/072-4; PS75 BIPOMAC; Reference/source; Scotia Sea; Scotia Sea, southwest Atlantic; Sea ice; Sea ice concentration, winter; Sea ice cover duration; Shona Ridge; SK200/22a; SK200/27; SK200/33; SL; SO136; SO136_111GC-12; Sonne; South Atlantic; South Atlantic Ocean; Southeast Pacific; Southern Ocean; South Pacific Ocean; TAN1302-96; TASQWA; TN057-13-PC4; TPC034; TPC063; TPC078; TPC286
Type:
Dataset
Format:
text/tab-separated-values, 9358 data points
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