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Boron isotope, Mg/Ca, Al/Ca data and reconstructed pH and CO2 concentrations from IODP sites (2020)

Anagnostou, Eleni ; John, Eleanor H ; Babila, Tali L ; [et al.]

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Publication Date: 2023-09-25

Description: This dataset includes measurements on mixed layer planktonic foraminifera from IODP/ODP sites for boron isotopes and trace elements. Boron isotopes were measured after column chemistry and solution analyses on a Neptune multi collector ICPMS, while trace elements were measured on pre-columned aliquots of the same samples, using Element XR ICP-MS. Furthermore, the dataset includes the seawater pH and atmospheric CO2 calculated from B isotopes measurements and Mg/Ca-temperature estimates, for no-vital effect treatment (T. sac-vital effect corrections at Eocene d11Bsw conditions result in d11B offsets within analytical uncertainty), and no pH correction on Mg/Ca-temperature relationship (assuming T. sac like species). Carbonate system calculations incorporate MyAMI ion-pairing corrections (https://github.com/MathisHain/MyAMI), and surface Omega values specific for the Eocene and the paleo-latitude of the core location. Propagation of uncertainties for pH and CO2 is completed through 1000 Monte Carlo simulations.

Keywords: 143-865B; 207-1258A; 207-1258B; 207-1258C; 207-1260A; 342-U1407A; 342-U1409B; 342-U1409C; AGE; Aluminium/Calcium ratio; Atmospheric CO2; Carbon dioxide; Carbon dioxide, standard deviation; climate sensitivity; Comment; Core; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Eocene; Event label; Exp342; Foraminifera, planktic δ11B; GMT; Hole; Joides Resolution; Leg143; Leg207; Magnesium/Calcium ratio; North Pacific Ocean; Paleogene Newfoundland Sediment Drifts; pH; pH, standard deviation; Sea surface temperature; Section; Site; Size fraction; South Atlantic Ocean; Species; surface seawater pH; δ11B, standard deviation

Type: Dataset

Format: text/tab-separated-values, 1239 data points

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Alkenone carbon isotopes, unsatutation measurements, SST, and stable planktic foraminifera carbon isotopes for estimation of atmospheric CO2 at ODP Site 999 for 0.11 to 0.26 and 2.60 to 2.79 Ma (2019)

Badger, Marcus P S ; Chalk, Thomas B ; Foster, Gavin L ; [et al.]

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Publication Date: 2023-08-17

Keywords: 165-999A; AGE; Alkenone C37:2, δ13C; Calculated; Calculated from UK'37 (Müller et al, 1998); Carbon dioxide, aquatic; Carbon dioxide, partial pressure; Carbon dioxide, partial pressure, standard deviation; Caribbean Sea; DEPTH, sediment/rock; DRILL; Drilling/drill rig; Fractionation of organic carbon; Globigerinoides ruber, δ13C; Henry's law constant; Isotopic fractionation; Joides Resolution; Leg165; Monte Carlo method; Phosphate; Physiological factors, sum; Salinity; Sample code/label; Sea surface temperature; δ13C, biomass; δ13C, carbon dioxide, aquatic; δ13C, carbon dioxide, gaseous

Type: Dataset

Format: text/tab-separated-values, 940 data points

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Global Mean Temperature (GMT) estimates, CO2 forcing relative to preindustrial, and climate sensitivity calculations (2020)

Anagnostou, Eleni ; John, Eleanor H ; Babila, Tali L ; [et al.]

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Publication Date: 2024-04-20

Description: The dataset includes time series of global mean temperature for the Eocene, using a combination of sea surface temperature reconstructions and model derived estimates of global mean temperatures. These are coupled to the atmospheric CO2 reconstructions, translated into CO2 forcing relative to preindustrial, to calculate the evolving climate sensitivity for the Eocene. Both equilibrium climate sensitivity and earth system sensitivity are provided.

Keywords: Atmospheric CO2; climate sensitivity; Eocene; GMT; surface seawater pH

Type: Dataset

Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 377.2 kBytes

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Reprocessed δ11B data for atmospheric CO2 and seawater pH from planktonic foraminifera (2020)

Anagnostou, Eleni ; John, Eleanor H ; Babila, Tali L ; [et al.]

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Publication Date: 2024-04-20

Description: In this dataset, we compile published records of seawater pH and atmospheric CO2 from foraminiferal δ11B are re-calculated using our current constrains and processing scenarios for the Eocene, for consistency to the new data. The re-calculation includes no vital effect treatment (for T. sac like species of planktonic foraminifera the offset in d11B at Eocene d11Bsw conditions is smaller than analytical uncertainty), no pH correction on Mg/Ca-temperature relationship (T. sac like species) and incorporating MyAMI for carbonate system calculations (https://github.com/MathisHain/MyAMI).

Keywords: Atmospheric CO2; climate sensitivity; Eocene; GMT; surface seawater pH

Type: Dataset

Format: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet, 209.6 kBytes

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5

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Boron isotope, Mg/Ca, Al/Ca data from planktonic foraminifera and reconstructed sea surface temperature, seawater pH and atmospheric CO2 concentrations from IODP and ODP sites, including estimates of Global Mean Temperature and Climate Sensitivity (2020)

Anagnostou, Eleni ; John, Eleanor H ; Babila, Tali L ; [et al.]

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Publication Date: 2024-04-20

Description: This dataset collection includes boron isotope, Mg/Ca, and Al/Ca data from planktonic foraminifera, reconstructed sea surface temperature, seawater pH and atmospheric CO2 concentrations, calculated Global Mean Temperature and Climate Sensitivity estimates, and recalculated seawater pH and atmospheric CO2 estimates from published planktonic foraminiferal boron isotope data.

Keywords: Atmospheric CO2; climate sensitivity; Eocene; GMT; surface seawater pH

Type: Dataset

Format: application/zip, 3 datasets

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