Porites spp. coral reconstructions of Sr/Ca and δ18O, and δ18Osw of coral core MAU2 at Mauritius from 1967-1989

Here we present a paired Sr/Ca and δ18O, bimonthly resolved record of a shallow water coral from the southwest Indian Ocean (Mauritius Island, 20.368366°S, 57.358077°E), extending from 1967 to 1989, a location at the edge of IOBM initial warming. This reconstruction along with a network of previously published coral reconstructions, has been used to explore changes in the initial warming of the IOBM, which occurs in the SWIO region. Sr/Ca tracks sea surface temperature well, revealing strong trends in SST. The paired analysis of Sr/Ca and δ18O, from the newly developed Mauritius coral, also allows for the calculation of δ18Osw (hydrology) at bimonthly resolution. This coral is used as a replicate for MAU1 spanning from 1882-1989 at the same location.