Global compilation of last glacial maximum oxygen isotopic ratios for planktonic and benthic foraminifera ...

• Main Authors: Caley, Thibaut, Roche, Didier M, Waelbroeck, Claire, Michel, Elisabeth
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: Greenland; ice core; Ice Sheet
• Online Access: https://dx.doi.org/10.1594/pangaea.836033; https://doi.pangaea.de/10.1594/PANGAEA.836033

We use the fully coupled atmosphere-ocean three-dimensional model of intermediate complexity iLOVECLIM to simulate the climate and oxygen stable isotopic signal during the Last Glacial Maximum (LGM, 21 000 yr). By using a model that is able to explicitly simulate the sensor (d18O), results can be directly compared with data from climatic archives in the different realms.Our results indicate that iLOVECLIM reproduces well the main feature of the LGM climate in the atmospheric and oceanic components. The annual mean d18O in precipitation shows more depleted values in the northern and southern high latitudes during the LGM. The model reproduces very well the spatial gradient observed in ice core records over the Greenland ice-sheet. We observe a general pattern toward more enriched values for continental calcite d18O in the model at the LGM, in agreement with speleothem data. This can be explained by both a general atmospheric cooling in the tropical and subtropical regions and a reduction in precipitation as ... : The supplement contains two excel files in zip-archive with compiled planktic and benthic foraminifera calcite d18O measurements of deep-sea cores for which both Last Glacial Maximum and Late Holocene d18O exist. The data are from various publications as given in the reference-column. Using individual datasets requires the citation of the original paper. ...