Indopacific Porites coral Li/Ca, B/Ca, Mg/Ca, Sr/Ca, Ba/Ca, U/Ca, and d11B data, 1994-2010 DeCarlo, T.M.; Gaetani, G.A.; Cohen, A.L.; Foster, G.L.; Alpert, A.E.; Stewart, J.A. DeCarlo, T.M. Gaetani, G.A. Cohen, A.L. Foster, G.L. Alpert, A.E. Stewart, J.A. earth science/paleoclimate/corals and sclerosponges (boron/calcium,Porites sp.,null,micromole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 4) earth science/paleoclimate/corals and sclerosponges (barium/calcium,Porites sp.,null,micromole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.03) earth science/paleoclimate/corals and sclerosponges (delta 11B,Porites sp.,null,per mil SRM 951,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.21) 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 (magnesium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.05) earth science/paleoclimate/corals and sclerosponges (strontium/calcium,Porites sp.,null,millimole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.04) earth science/paleoclimate/corals and sclerosponges (lithium/calcium,Porites sp.,null,micromole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.27) earth science/paleoclimate/corals and sclerosponges (uranium/calcium,Porites sp.,null,micromole per mole,null,corals and sclerosponges,raw,isotope ratio mass spectrometry,N,Porites spp. Skeleton; error = 0.01) earth science/paleoclimate/corals and sclerosponges (Palmyra Island>LATITUDE 5.8664>LONGITUDE -162.12) (Airai>LATITUDE 7.3321>LONGITUDE 134.5602) (Nikko Bay>LATITUDE 7.3248>LONGITUDE 134.4684) (Uchelbeluu>LATITUDE 7.267>LONGITUDE 134.521) (Tower 721, Red Sea>LATITUDE 22.0314>LONGITUDE 38.8778) Coral skeletons archive past climate variability with unrivaled temporal resolution. However, extraction of accurate temperature information from coral skeletons has been limited by “vital effects,” which confound, and sometimes override, the temperature dependence of geochemical proxies. We present a new approach to coral paleothermometry based on results of abiogenic precipitation experiments interpreted within a framework provided by a quantitative model of the coral biomineralization process. DeCarlo et al. (2015a) investigated temperature and carbonate chemistry controls on abiogenic partitioning of Sr/Ca and U/Ca between aragonite and seawater and modeled the sensitivity of skeletal composition to processes occurring at the site of calcification. The model predicts that temperature can be accurately reconstructed from coral skeleton by combining Sr/Ca and U/Ca ratios into a new proxy, which we refer to hereafter as the Sr-U thermometer. Here we test the model predictions with measured Sr/Ca and U/Ca ratios of 14 Porites sp. corals collected from the tropical Pacific Ocean and the Red Sea, with a subset also analyzed using the boron isotope (d11B) pH proxy. Observed relationships among Sr/Ca, U/Ca, and d11B agree with model predictions, indicating that the model accounts for the key features of the coral biomineralization process. By calibrating to instrumental temperature records, we show that Sr-U captures 93% of mean annual temperature variability (26–30°C) and has a standard deviation of prediction of 0.5°C, compared to 1°C using Sr/Ca alone. The Sr-U thermometer may offer significantly improved reliability for reconstructing past ocean temperatures from coral skeletons. STUDY NOTES: Measurement Precision- Mg/Ca 0.05 mmol/mol; Sr/Ca 0.04 mmol/mol; Ba/Ca 0.03 µmol/mol; U/Ca 0.01 µmol/mol; Li/Ca 0.27 µmol/mol; B/Ca 4 µmol/mol; d11B 0.21 per mil SRM 951. Provided Keywords: Porites, coral, Sr-U NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : DeCarlo, T.M. Investigator : Gaetani, G.A. Investigator : Cohen, A.L. Investigator : Foster, G.L. Investigator : Alpert, A.E. Investigator : Stewart, J.A. 2017-03-22 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/21710 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko168.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_02_12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-airai23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu229.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu221.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko169.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_03_13.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_1c.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko180.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_44c.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko168.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_02_12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-airai23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu229.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu221.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko169.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_03_13.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_1c.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko180.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_44c.txt English https://www.ncdc.noaa.gov/paleo/study/21710 https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko168.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_02_12.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-airai23.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu229.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-uchelbeluu221.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko169.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-pal_03_13.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_1c.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-nikko180.txt https://www1.ncdc.noaa.gov/pub/data/paleo/coral/multiregion/decarlo2016/decarlo2016-redsea_44c.txt DeCarlo, T.M., G.A. Gaetani, A.L. Cohen, G.L. Foster, A.E. Alpert, and J.A. Stewart2016Coral Sr-U thermometryPaleoceanography31626-63810.1002/2015PA002908 START YEAR: 1994 AD * END YEAR: 2010 AD -162.12 5.8664 134.5602 22.0314