Bayesian Calibration of the Mg/Ca Paleothermometer in Planktic Foraminifera Jessica E
Bayesian Calibration of the Mg/Ca Paleothermometer in Planktic Foraminifera Jessica E. Tierney, Steven B. Malevich, William Gray, Lael Vetter, Kaustubh Thirumalai To cite this version: Jessica E. Tierney, Steven B. Malevich, William Gray, Lael Vetter, Kaustubh Thirumalai. Bayesian Calibration of the Mg/Ca Paleothermometer in Planktic Foraminifera. Paleoceanography and Pale- oclimatology, American Geophysical Union, 2019, 34 (12), pp.2005-2030. 10.1029/2019PA003744. hal-02973694 HAL Id: hal-02973694 https://hal.archives-ouvertes.fr/hal-02973694 Submitted on 28 Oct 2020 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. RESEARCH ARTICLE Bayesian Calibration of the Mg/Ca Paleothermometer in 10.1029/2019PA003744 Planktic Foraminifera Key Points: 1 1 2 1 • We introduce Mg/Ca Bayesian Jessica E. Tierney , Steven B. Malevich , William Gray , Lael Vetter , calibrations for planktic foraminifera and Kaustubh Thirumalai1 • Hierarchical modeling is used to constrain multivariate Mg/Ca 1Department of Geosciences, University of Arizona, Tucson, AZ, USA, 2Laboratoire des Sciences du Climat et de sensitivities l'Environnement (LSCE/IPSL), Gif-sur-Yvette, France • For deep-time applications, we incorporate estimates of Mg/Ca of seawater Abstract The Mg/Ca ratio of planktic foraminifera is a widely used proxy for sea-surface temperature but is also sensitive to other environmental factors.
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