Palaui Islands, Philippines Diploastrea heliopora and Porites lobata Sr/Ca and d18O Data from 1954 to 2012 Ramos, R.D.; Goodkin, N.F.; Siringan, F.P.; Hughen, K.A. Ramos, R.D. Goodkin, N.F. Siringan, F.P. Hughen, K.A. earth science/paleoclimate/corals and sclerosponges (delta 18O,Diploastrea heliopora,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Porites lobata,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (age,null,null,year Common Era,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Diploastrea heliopora,null,millimole per mole,null,corals and sclerosponges,interpolated,inductively-coupled plasma atomic emission spectroscopy,N,null) earth science/paleoclimate/corals and sclerosponges (delta 18O,Porites lobata,null,per mil VPDB,null,corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Palaui Island>LATITUDE 18.54>LONGITUDE 122.15) The Indo-Pacific coral Diploastrea heliopora reveals regional multi-decadal to centennial scale climate variability using coral carbonate d18O (d18Oc) as a combined proxy for sea surface temperature (SST) and sea surface salinity (SSS). However, to assess the coral’s full potential in resolving climatic events, an independent SST proxy would be more advantageous. We examined both Sr/Ca and d18O of Diploastrea against an adjacent Porites lobata core collected from northeast Luzon, Philippines. Winter Sr/Ca data from Diploastrea show a significant correlation to SST (r = -0.41, p < 0 .05, RMSR = 0.81°C) and provide a proxy with similar sensitivity as Porites (r = -0.57, p < 0.05, RMSR = 0.62°C). An inter-species SST record is shown to be robust and used for a reconstruction of the Pacific Decadal Oscillation (PDO) during boreal winter (r = -0.70, p = 0.02). While we were unable to generate a robust Diploastrea d18O-SSS calibration at inter-annual timescale, the freshening trend towards the present, commonly observed in the region, is qualitatively captured in Diploastrea d18O. Comparison with Porites d18O and instrumental SSS records shows that the magnitude of freshening is consistent between coral species. Wet and dry season Porites d18O provide support for the relative influence of El Niño Southern Oscillation (ENSO) events and local precipitation to SSS variability at our site. The multi-proxy, multi-species approach of this study further strengthens the evidence for Diploastrea as an alternate climate archive in the Indo-Pacific region, and seals its potential in helping resolve less understood global-scale climate phenomena. STUDY NOTES: Monthly paired Sr/Ca and d18O measurements of Diploastrea and Porites collected at Palaui Islands, Philippines. The Sr/Ca and d18O data were determined using an inductively coupled plasma optical emission spectroscopy (ICP-OES) and isotope ratio mass spectrometry (IRMS). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Ramos, R.D. Investigator : Goodkin, N.F. Investigator : Siringan, F.P. Investigator : Hughen, K.A. 2017-05-24 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/22120 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/ramos2017/ramos2017.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/ramos2017/ramos2017.txt English https://www.ncdc.noaa.gov/paleo/study/22120 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/ramos2017/ramos2017.txt Ramos, R.D., N.F. Goodkin, F.P. Siringan, and K.A. Hughen2017Diploastrea heliopora Sr/Ca and d18O records from northeast Luzon, Philippines: an assessment of inter-species coral proxy calibrations and climate controls of sea surface temperature and salinityPaleoceanography324424-43810.1002/2017PA003098http://onlinelibrary.wiley.com/doi/10.1002/2017PA003098/full START YEAR: 1954 AD * END YEAR: 2012 AD 122.15 18.54 122.15 18.54