Biomarker indices and concentrations and biomarker-based temperature estimates from the Iberian Margin core MD95-2042, composite Greenland atmospheric temperature record, and Antarctic stacks ...

• Main Authors: Davtian, Nina, Bard, Edouard
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2023
• Subjects: air temperature; Alkenones; Antarctica; d18O; GDGTs; Greenland; Iberian margin; RI-OH; Sea surface temperature; TEX86; UK'37; International Marine Global Change Study IMAGES; Antarc*; Antarctic
• Online Access: https://dx.doi.org/10.1594/pangaea.957377; https://doi.pangaea.de/10.1594/PANGAEA.957377

Core MD95-2042 alkenone and GDGT data: This dataset provides the following information for core MD95-2042: depth, age, summed OH-GDGT, iGDGT, and di-unsaturated and tri-unsaturated C37 alkenone concentrations, OH-GDGT-based, iGDGT-based, and alkenone-based paleothermometric indices, GDGT-2/GDGT-3 ratio, and biomarker-based sea surface temperature (SST) and 0‐ to 200‐m sea temperature (subT; gamma function probability distribution for target temperatures with a = 4.5 and b = 15) estimates. Sediment samples were taken every 5 cm from core MD95-2042 and homogenized before lipid extraction. The lipid extracts were splitted into two fractions: one for alkenone analysis by gas chromatography coupled to a flame ionization detector, and the other for GDGT analysis by high-performance liquid chromatography coupled to mass spectrometry. All GDGT analyses were done in duplicate. The 1σ analytical uncertainties from 37 replicate analyses of the core catcher sample from core MD95-2042 are 0.007 (0.4 °C) for RI-OH, 0.008 ...