Hon Tre Island, Vietnam 33 Year Paired Monthly Sr/Ca and d18O Data Bolton, A.; Goodkin, N.F.; Hughen, K.A.; Ostermann, D.R.; Vo, S.T.; Phan, H.K. Bolton, A. Goodkin, N.F. Hughen, K.A. Ostermann, D.R. Vo, S.T. Phan, H.K. earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Porites lutea,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/climate reconstructions|corals and sclerosponges (delta 18O,Porites lutea,null,per mil VPDB,null,climate reconstructions|corals and sclerosponges,interpolated,isotope ratio mass spectrometry,N,null) earth science/paleoclimate/corals and sclerosponges (depth,null,null,millimeter,null,corals and sclerosponges,null,null,N,null) earth science/paleoclimate/corals and sclerosponges earth science/paleoclimate/corals and sclerosponges (Hon Tre Island>LATITUDE 12.21386>LONGITUDE 109.30486) Paired strontium-to-calcium (Sr/Ca) and d18O measurements for two Porites lutea corals recovered from Hon Tre Island, Vietnam, are strongly correlated to sea surface temperature (SST) and precipitation at monthly to interannual time-scales. Least squares linear regression of monthly Sr/Ca to SST shows a strong, significant correlation (r2 = 0.77, p < .0001), with root mean square residuals of 0.9 °C. 3-year averaged (binned) Sr/Ca for wet (Sep-Nov) and dry (Jan-Mar) seasons separately captures SST variability at interannual time scales (Sr/Ca RMSR = 0.42 °C and 0.70 °C for wet and dry seasons, respectively). Coral d18O correlates weakly to SST at seasonal and interannual time scales for wet and dry seasons, with significant anomalies (d18O RMSR = 2.4 °C and 1.65 °C, respectively). Correcting the SST influence on coral d18O using paired Sr/Ca values provides estimates of d18O of seawater (d18Osw). 3-year averaged d18Osw during the wet season shows a significant correlation to local precipitation (r2 = 0.54, p = 0.01). These results show that coral Sr/Ca in this location accurately reflects SST at a number of timescales, and that seawater d18O composition in the wet season is controlled by local precipitation, largely unmodified by ocean circulation during the winter monsoon. This study highlights the sensitivity and utility of coral geochemistry in this region for reliably reconstructing SST and monsoonal precipitation. STUDY NOTES: Paired strontium-to-calcium (Sr/Ca) and d18O measurements at monthly resolution for two Porites lutea corals (BB and TN) recovered from Hon Tre Island, Vietnam. The coral Sr/Ca data were determined by inductively coupled plasma optical emission spectroscopy and oxygen isotopes were determined using isotope ratio mass spectrometry ionisation mass spectrometry. Blank sections in the beginning of TN represent no samples present (i.e. this was where the BB coral was younger than the TN coral). Other blanks in both BB and TN represent areas of growth that were not drillable (i.e. sections between coral slabs or areas where coralite growth was not optimal, see manuscript). NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Bolton, A. Investigator : Goodkin, N.F. Investigator : Hughen, K.A. Investigator : Ostermann, D.R. Investigator : Vo, S.T. Investigator : Phan, H.K. 2014-08-14 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/17035 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/hon-tre2014.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/hon-tre2014.txt English https://www.ncdc.noaa.gov/paleo/study/17035 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/hon-tre2014.txt A. Bolton, N.F. Goodkin, K. Hughen, D.R. Ostermann, S.T. Vo, H.K. Phan2014Paired Porites coral Sr/Ca and d18O from the western South China Sea: Proxy calibration of sea surface temperature and precipitationPalaeogeography, Palaeoclimatology, Palaeoecology410233-24310.1016/j.palaeo.2014.05.047http://www.sciencedirect.com/science/article/pii/S0031018214003034 START YEAR: 1977 AD * END YEAR: 2010 AD 109.30486 12.21386 109.30486 12.21386