Deglacial Deep Ocean B/Ca Carbonate Ion Reconstructions Yu, J.; Broecker, W.S.; Elderfield, H.; Jin, Z.; McManus, J.F.; Zhang, F. Yu, J. Broecker, W.S. Elderfield, H. Jin, Z. McManus, J.F. Zhang, F. Other Reconstruction carbon cycle earth science/paleoclimate/paleoceanography (delta 18O,benthic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/climate reconstructions|paleoceanography (carbonate ion,boron/calcium|sea water,null,millimole per kilogram,null,climate reconstructions|paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,mid depth) earth science/paleoclimate/paleoceanography (age,null,null,calendar kiloyear before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,benthic foraminifer,one standard deviation,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,benthic foraminifer,one standard deviation,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (boron/calcium,Cibicidoides wuellerstorfi,one standard deviation,millimole per mole,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 18O,benthic foraminifer,null,per mil PDB,null,paleoceanography,averaged,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,benthic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,benthic foraminifer,null,per mil PDB,null,paleoceanography,averaged,null,N,null) earth science/paleoclimate/paleoceanography (boron/calcium,Cibicidoides wuellerstorfi,null,millimole per mole,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (calcium carbonate,sediment,null,percent,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth at sample start,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (depth at sample end,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (boron/calcium,Cibicidoides wuellerstorfi,null,millimole per mole,null,paleoceanography,averaged,null,N,null) earth science/paleoclimate/paleocean (BOFS-8K>LATITUDE 52.5>LONGITUDE -22.1) (MW91-9 GGC48>LATITUDE 0>LONGITUDE 161) (WIND 28K>LATITUDE 10.2>LONGITUDE 51.8) (VM28-122>LATITUDE 12>LONGITUDE -79) (MW91-9 GGC15>LATITUDE 0>LONGITUDE 158) Deep-ocean carbonate ion concentrations ([CO3 2-]) and carbon isotopic ratios (d13C) place important constraints on past redistributions of carbon in the ocean-land-atmosphere system and hence provide clues to the causes of atmospheric CO2 concentration changes. However, existing deep-sea [CO3 2-] reconstructions conflict with one another, complicating paleoceanographic interpretations. Here, we present deep-sea [CO3 2-] for five cores from the three major oceans quantified using benthic foraminiferal boron/calcium ratios since the last glacial period. Combined benthic d13C and [CO3 2-] results indicate that deep-sea-released CO2 during the early deglacial period (17.5 to 14.5 thousand years ago) was preferentially stored in the atmosphere, whereas during the late deglacial period (14 to 10 thousand years ago), besides contributing to the contemporary atmospheric CO2 rise, a substantial portion of CO2 released from oceans was absorbed by the terrestrial biosphere. STUDY NOTES: Benthic foraminiferal boron/calcium ratios and stable isotope data for five cores from the three major oceans used to reconstruct deep-sea carbonate ion [CO3 2-] since the last glacial period. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Yu, J. Investigator : Broecker, W.S. Investigator : Elderfield, H. Investigator : Jin, Z. Investigator : McManus, J.F. Investigator : Zhang, F. 2010-11-18 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/10416 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.txt English https://www.ncdc.noaa.gov/paleo/study/10416 https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.xls https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/yu2010/yu2010.txt Yu, J., W.S. Broecker, H. Elderfield, Z. Jin, J. McManus, and F. Zhang. 2010. Loss of Carbon from the Deep Sea Since the Last Glacial Maximum. Science, Vol. 330, pp. 1084-1087, 19 November 2010. DOI: 10.1126/science.1193221 START YEAR: 53000 cal yr BP * END YEAR: 2000 cal yr BP -79 0 161 52.5