Crosta et al. 2004 Southern Ocean Diatom SST-Sea Ice Recons Crosta, X.; Sturm, A.; Armand, L.; Pichon, J.-J. Crosta, X. Sturm, A. Armand, L. Pichon, J.-J. Sea Ice Reconstruction Sea Surface Temperature Reconstruction earth science/paleoclimate/paleoceanography (delta 18O,Neogloboquadrina pachyderma sinistral,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Diatom SAZ (Subantarctic Zone) Group) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Eucampia antarctica) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Hemidiscus karstenii) earth science/paleoclimate/climate reconstructions|paleoceanography (sea surface temperature,diatom assemblage,null,degree Celsius,Feb,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Diatom SIZ (Sea Ice Zone) Group) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Diatom POOZ (Permanent Open Ocean Zone) Group) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Diatom Strat (Water Stratification) Group) earth science/paleoclimate/climate reconstructions|paleoceanography (sea ice cover,diatom assemblage,null,month,null,climate reconstructions|paleoceanography,null,null,N,month per year) earth science/paleoclimate/paleoceanography (identified diatom,null,null,percent,null,paleoceanography,null,null,N,Extinct diatoms) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleocean (SO136-111>LATITUDE -56.67>LONGITUDE 160.23) A Modern Analog Technique (MAT5201/31) has been applied to fossil diatom assemblages to provide down-core estimates of February sea-surface temperatures (SSTs) and of sea ice duration over the past 220 000 years at 56‡40PS, 160‡14PE. At the core location, sea ice progression lagged the SST drop by V1 ka at interglacial^glacial transitions, and sea ice retreat was almost synchronous to the SST increase at glacial^interglacial terminations. Sea ice increased continuously during glacial periods to reach its maximum extent at the end of glacial times, although SSTs were almost constant during glacials. This indicates that SSTs are the major parameter determining the advance and retreat of sea ice at transitions, but that the sea ice advance during glacial conditions may be related to positive feedbacks of the ice on albedo, air temperature and meridional wind stress. The strong correlation (r =0.75) between sea ice duration at the core location and the Vostok CO2 record argues for a control of Antarctic sea ice extent on atmospheric CO2 concentration via the modification of the ocean-to-atmosphere gas balance. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Crosta, X. Investigator : Sturm, A. Investigator : Armand, L. Investigator : Pichon, J.-J. 2004-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/8702 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/crosta2004/crosta2004.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/crosta2004/crosta2004.txt English https://www.ncdc.noaa.gov/paleo/study/8702 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/crosta2004/crosta2004.txt Crosta, X., A. Sturm, L. Armand, and J.-J. Pichon2004Late Quaternary sea ice history in the Indian sector of the Southern Ocean as recorded by diatom assemblagesMarine Micropaleontology50209-22310.1016/S0377-8398(03)00072-0 START YEAR: 288440 cal yr BP * END YEAR: 3220 cal yr BP 160.23 -56.67 160.23 -56.67