Publication Date:
2024-01-09
Description:
Knowledge of past atmospheric pCO2 is important for evaluating the role of greenhouse gases in climate forcing. Ice core records show the tight correlation between climate change and pCO2, but records are limited to the past ~900 kyr. We present surface ocean pH and pCO2 data, reconstructed from boron isotopes in planktonic foraminifera over two full glacial cycles (0-140 and 300-420 kyr). The data co-vary strongly with the Vostok pCO2-record and demonstrate that the coupling between surface ocean chemistry and the atmosphere is recorded in marine archives, allowing for quantitative estimation of atmospheric pCO2 beyond the reach of ice cores.
Keywords:
108-668B; AGE; Alkalinity, total; Calculated; Calculated from Mg/Ca ratios (Dekens et al. 2002); Carbon dioxide, partial pressure; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Globigerinoides ruber, Magnesium/Calcium ratio; Inductively coupled plasma - mass spectrometry (ICP-MS); Joides Resolution; Leg108; Magnesium/Calcium ratio, standard deviation; Mass; Number; Ocean Drilling Program; ODP; pH; Salinity; Sample code/label; Sea level variation; Sea surface temperature, annual mean; South Atlantic Ocean; Thermal Ionization Mass Spectrometry (TIMS); δ11B; δ11B, standard deviation; δ18O, water
Type:
Dataset
Format:
text/tab-separated-values, 308 data points
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