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Science News 

Ocean temperature reconstruction

Agnieszka K.

Ocean temperature reconstruction

The published study offers a comprehensive analysis of geochemical proxies extracted from reef coral skeletons (Porites and Diploastrea) aimed to reconstruct sea surface temperature (SST). Employing a multi-element approach (e.g., Sr/Ca and Li/Mg) notably reduced uncertainties in temperature calibration. Discrepancies in SST reconstructions were more pronounced in Porites compared to Diploastrea colonies, attributed to variations in ratios between major microstructural skeletal components. These ratios influence the integration of trace elements and reflect physiological differences between taxa.
 

Figure: Reconstruction of sea surface temperature (SST) based on multi-proxy analysis of elements in the skeletons of reef corals Porites and Diploastrea (upper panel), and differences in ratios between major microstructural skeletal components (Rapid Accretion Deposits vs. Thickening Deposits) in Porites and Diploastrea (lower panel).

PUBLICATION: Canesi, M., Douville, E., Montagna, P., Bordier, L., Caquineau, S., Pons-Branchu, E., Iwankow, G., Stolarski, J., Allemand, D., Planes, S., Moulin, C., Lombard, F., Bourdin, G., Troublé, R., Agostini, S., Banaigs, B., Boissin, E., Boss, E., Bowler, C., Vargas, C., Flores, M., Forcioli, D., Furla, P., Gilson, E., Galand, P.E., Pesant, S., Sunagawa, S., Thomas, O., Thurber, R.V., Voolstra, C.R., Wincker, P., Zoccola, D., Reynaud, S. 2024. Sea surface temperature reconstruction in the Pacific Ocean using multi-elemental proxy in Porites and Diploastrea corals: Application to Palau Archipelago. Chemical Geology 645: 121884, doi:10.1016/j.chemgeo.2023.121884.

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