Here we compiled stable carbon isotope data from 23 ODP sites in the Atlantic and Pacific, binned by marine isotope stage.Stable carbon isotope data were binned and averaged according to the marine isotope age assignments in the LR04 and the reported ages of the samples from each site. Only Cibicidoides wuellerstorfi values were used, although sometimes measured species was not reported for each sample by the original publication. Please note that some sites have data originating from multiple publications.
Calculated values for whole basin δ13C of dissolved inorganic carbon, calculated Δδ13C, and associated uncertainties from the values compiled in MPWP_benthic_isotope_data_compilation. Benthic δ13C data from all sites below 2000 meters water depth were binned by marine isotope stage as defined by the age bounds provided with the LR04 stack. Because of our focus on specific MIS events, sedimentary records with low-resolution age models were excluded. All data are derived from Cibicidoides wuellerstorfi. In datasets composed of isotope measurements of two or more benthic foraminifera species (e.g., ODP 883), only C. wuellerstorfi δ13C data were used. The mean of the binned data across the entire isotope stage from each site was then used to calculate a mean deep Pacific and mean deep Atlantic δ13CDIC estimate for all 11 marine isotope stages in the MPWP, assuming a 1:1 relationship between C. wuellerstorfi δ13C and δ13CDIC. All sites were weighed equally.
Late Pliocene (~2.6-3.4 million years ago) multiproxy paleoceanographic datasets from Ocean Drilling Program subpolar North Pacific Leg 145 sites 883 (51.12°N, 167.46°E, 2384 m water depth) and 887 (54.22°N, 148.27°W, 3631.2 m water depth). Composite splice for site 883 was created by visual correlation of the shipboard gamma ray attenuation and porosity evaluator (GRAPE) wet bulk density (WBD) measurements between 883B and 883C starting at core 9H and ending at 18H. An astronomically tuned age model for site 883 was developed by correlation of benthic foraminiferal δ18O (3.0–3.385 Ma) to the δ18O probabilistic stack and the 883 GRAPE WBD composite (2.841–3.0 Ma & 3.385–3.465 Ma) to the nearby astronomically-tuned ODP 882 carbonate weight percent record. Benthic foraminiferal stable oxygen and carbon isotope ratios were quantified with a Finnigan Mat 252 with Carbonate Kiel III autosampler. Alkenone concentrations and the UK'37 sea surface temperature index were determined by an Agilent Technologies 6890 gas chromatograph flame ionization detector (GC-FID), with an Agilent Technologies DB-1 column (60 m, 0.32 mm diameter, 0.10 mm film thickness). Calcium carbonate content was determined by acidification of bulk sediment samples with 2M hydrogen sulfide and quantification of the resulting gaseous carbon with a UIC Coulometrics CO2 Coulometer. A composite section was developed for ODP 887 by correlation of shipboard gamma ray attenuation and porosity evalvuator (GRAPE) wet bulk density between 887A and 887C. An improved age model was developed by correlation of the GRAPE composite to that of ODP 883. Stable carbon isotope data were compiled for each marine isotope stage of the mid-Piacenzian warm period from 23 IODP/ODP/DSDP core sites. These data were then binned by marine isotope stage, averaged, and grouped by ocean basin.
The dataset reports sediment data obtained from a three-year sediment trapping (2011-2013 CE) at two locations (proximal and distal towards the river inflow) in Lake Mondsee, Austria in comparison to a varved surface sediment core (1986-2013 CE) from the distal location and river runoff. The sediment trap data includes stable oxygen and carbon isotope composition, sediment flux and carbon contents, the sediment core data includses stable oxygen and carbon isotope composition of seasonal calcite layers and bulk samples and the thickness of detrital layers.