Paleocene-Eocene Boundary Equatorial Pacific and Subtropical Atlantic Planktonic Mg/Ca and d18O Data Tripati, A.K.; Elderfield, H. Tripati, A.K. Elderfield, H. earth science/paleoclimate/paleoceanography (magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Morozovella velascoensis) earth science/paleoclimate/paleoceanography (delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Subbotina sp.) earth science/paleoclimate/paleoceanography (delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina sp.) earth science/paleoclimate/paleoceanography (delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Morozovella velascoensis) earth science/paleoclimate/paleoceanography (delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina soldadoensis) earth science/paleoclimate/paleoceanography (delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Subbotina sp.) earth science/paleoclimate/paleoceanography (age,null,null,radiocarbon year before present,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina sp.) earth science/paleoclimate/paleoceanography (delta 13C,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Morozovella velascoensis) earth science/paleoclimate/paleoceanography (magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Subbotina sp.) earth science/paleoclimate/paleoceanography (delta 18O,planktic foraminifer,null,per mil PDB,null,paleoceanography,null,null,N,Acarinina soldadoensis) earth science/paleoclimate/paleoceanography (depth,null,null,centimeter,null,paleoceanography,null,null,N,null) earth science/paleoclimate/paleoceanography (magnesium/calcium,planktic foraminifer,null,dimensionless,null,paleoceanography,null,null,N,Acarinina soldadoensis) earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean earth science/paleoclimate/paleocean (ODP1209B>LATITUDE 32.65>LONGITUDE 158.5) (ODP 865C>LATITUDE 18.440167>LONGITUDE -179.555667) (DSDP 527>LATITUDE -28.03>LONGITUDE 1.77) A rapid increase in greenhouse gas levels is thought to have fueled global warming at the Paleocene-Eocene Thermal Maximum (PETM). Foraminiferal magnesium/calcium ratios indicate that bottom waters warmed by 4 to 5C, similar to tropical and subtropical surface ocean waters, implying no amplification of warming in high-latitude regions of deep-water formation under ice-free conditions. Intermediate waters warmed before the carbon isotope excursion, in association with downwelling in the North Pacific and reduced Southern Ocean convection, supporting changing circulation as the trigger for methane hydrate release. A switch to deep convection in the North Pacific at the PETM onset could have amplified and sustained warming. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Tripati, A.K. Investigator : Elderfield, H. 2004-07-01 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/6424 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o1209b-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tripati2004 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o865c-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/dsd527-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o1209b-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tripati2004 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o865c-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/dsd527-t-tab.txt English https://www.ncdc.noaa.gov/paleo/study/6424 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o1209b-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/tripati2004 https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/o865c-t-tab.txt https://www1.ncdc.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/dsd527-t-tab.txt Tripati, A.K. and H. Elderfield. 2004. Abrupt hydrographic changes in the equatorial Pacific and subtropical Atlantic from foraminiferal Mg/Ca indicate greenhouse origin for the thermal maximum at the Paleocene-Eocene Boundary. Geochemistry, Geophysics, Geosystems, 5(2), Q02006 Tripati, A. and H. Elderfield. 2005. Deep-Sea Temperature and Circulation Changes at the Paleocene-Eocene Thermal Maximum. Science, Vol. 308, pp. 1894. START YEAR: 56000000 14C yr BP * END YEAR: 54579000 14C yr BP -179.555667 -28.03 158.5 32.65