"Oxygen isotope temperature calibrations for modern Tridacna shells in " by Guozhen Wang, Hong Yan et al.
The oxygen isotope ratio of carbonate in Tridacna shell (δ18Oshell) is assumed to be precipitated in isotopic equilibrium with surrounding seawater and thus reflects a combination of the Sea surface temperature (SST) and the δ18O of seawater (δ18OSW). Accordingly, Tridacna δ18Oshell has been widely used for high-resolution paleoclimate reconstructions. However, the influences of interspecific differences, spatial heterogeneity, as well as the “growth effect” on the δ18Oshell-SST relationship, have not been fully tested. Here, we present a monthly resolved δ18Oshell record of a Tridac...