# Amedee Lighthouse - Elemental Ratios, Isotope, and SST Calibration Data #----------------------------------------------------------------------- # World Data Center for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # NOTE: Please cite Publication, and Online_Resource and date accessed when using these data. # If there is no publication information, please cite Investigators, Title, and Online_Resource and date accessed. # # # Online_Resource: https://www.ncdc.noaa.gov/cdo/f?p=519:1:::::P1_STUDY_ID:1877: # # Online_Resource: https://www.ncdc.noaa.gov/paleo/study/24611 # # Original_Source_URL: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/amedee_2002.txt # # Description/Documentation lines begin with # # Data lines have no # # # Archive: Climate Reconstructions #-------------------- # Contribution_Date # Date: 2003-10 #-------------------- # Title # Study_Name: Amedee Lighthouse - Elemental Ratios, Isotope, and SST Calibration Data #-------------------- # Investigators # Investigators: Quinn, T.M.; Sampson, D.S. #-------------------- # Description_and_Notes # Description: Evaluation of elemental ratios and oxygen isotope data from Porites lutea coral at Amedee Island, New Caledonia (22deg 29'S, 166deg 28'E) as proxies for sea surface conditions. Calibration of 25 year series of measured local and modeled regional SST and SSS values against coral geochemical proxies. #-------------------- # Publication # Authors: Quinn, T.M.; Sampson, D.S. # Published_Date_or_Year: 2002 # Published_Title: A Multi-Proxy Approach to Reconstructing Sea-Surface Conditions using Coral Skeleton Geochemistry. # Journal_Name: Paleoceanography # Volume: 17 # Edition: # Issue: 4 # Pages: 1062 # DOI: 10.1029/2000PA000528 # Online_Resource: # Full_Citation: Quinn, T. M., and D.S. Sampson, 2002, A Multi-Proxy Approach to Reconstructing Sea-Surface Conditions using Coral Skeleton Geochemistry. Paleoceanography, 17, 4, 1062, doi:10.1029/2000PA000528 # Abstract: We use elemental ratio (Mg/Ca, Sr/Ca, U/Ca and Ba/Ca) and oxygen isotope data from a Porites lutea coral head collected from offshore Amédée Island, New Caledonia (22°29S, 166°28E) to assess the degree to which changes in these geochemical variables reflect variations in sea surface conditions. We have assessed the robustness of each geochemical proxy by comparing 25 years (1992¿1968) of monthly geochemical variations with a local record of sea surface temperature (SST) and with the appropriate 1° by 1° grid box from a global gridded SST data set. We conclude from our comparison that the most consistent proxies of monthly SST variations at this site are d18O (r2 = -0.84; p = <.0001) and Sr/Ca (r2 = -0.84; p = <.0001). The fidelity of the coral-based Sr/Ca-SST proxy was assessed via calibration- verification exercises at New Caledonia and Rarotonga. The ¿paleoclimate¿ accuracy of the coral Sr/Ca-SST technique is judged to be robust, and the precision of the technique is estimated to be ~0.3° ± 0.5 (2) based on the calibration-verification exercise. In contrast, monthly variations in Mg/Ca and U/Ca ratios are only moderately correlated with monthly SST variations (r2 = 0.55; p = <.0001 for Mg/Ca and r2 = 0.47; p = <.0001). The strength of the correlation between SST and Mg/Ca and U/Ca varies as a function of time, suggesting that variations in these ratios are not a simple function of SST variations. This variability in goodness of fit between U/Ca-SST and Mg/Ca-SST may ultimately limit the use of these ratios as coral paleothermometers. Averaging or stacking individual proxy SST records (Sr/Ca, Mg/Ca and U/Ca) to generate a composite proxy SST record does not necessarily improve the proxy record if the signal-to-noise ratio in each proxy is highly variable. For example, stacking of Sr/Ca-Mg/Ca-U/Ca records at New Caledonia produces a proxy SST time series that has greater standard error than the individual Sr/Ca-SST time series (cf. ordinary least squares standard error of 1.16°C versus 0.86°C). Ba/Ca variations have little correlation with SST, Sr/Ca, Mg/Ca, or U/Ca variations at New Caledonia. In conclusion, variations in oxygen isotopic composition of seawater, calculated by removing the Sr/Ca-based temperature component of the d18O signal, agree reasonably well with observed variations in sea surface salinity, especially at the interannual timescale. #------------------ # Authors: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G.J., Noone, D., Perkins, W.A., and E. Steig # Published_Date_or_Year: 2018 # Published_Title: Additions to the last millennium reanalysis multi-proxy database # Journal_Name: Data Science Journal # Volume: # Edition: # Issue: # Pages: # Report_Number: # DOI: # Online_Resource: # Full_Citation: Anderson, D.M., Tardif, R., Horlick, K., Erb, M.P., Hakim, G., J., Noone, D., Perkins, W.A., and E. Steig, submitted. Additions to the last millennium reanalysis multi-proxy database. Data Science Journal. # Abstract: Progress in paleoclimatology increasingly occurs via data syntheses. We describe additions to a collection prepared for use in paleoclimate state estimation, specifically the Last Millennium Reanalysis (LMR). The 2290 additional series include 2152 tree ring chronologies and 138 other series. They supplement the collection used previously and together form a database titled LMRdb 1.0.0. The additional data draws from lake core, ice core, coral, speleothem, and tree ring archives, using published data primarily from the NOAA Paleoclimatology archive and a set of tree ring width chronologies standardized from raw International Tree Ring Data Bank ring width series. In contrast to many previous paleo compilations, the data were not selected (screened) on the basis of their environmental correlation, multi-century length, or other attributes. The inclusion of proxies sensitive to moisture and other environmental variables expands their use in data assimilation. A preliminary calibration using linear regression with mean annual temperature reveals characteristics of the proxy series and their relationship to temperature, as well as the noise and error characteristics of the records. The additional records are structured as individual files in the NOAA Paleoclimatology format and archived at NOAA Paleoclimatology (Anderson et al. 2018) and will continue to be improved and expanded as part of the LMR Project. The additions represent a four-fold increase in the number of records available for assimilation, provide expanded geographic coverage, and add additional proxy variables. Applications include data assimilation, proxy system model development, and paleoclimate reconstruction using climate field reconstruction and other methods. #------------------ # Funding_Agency # Funding_Agency_Name: # Grant: #------------------ # Funding_Agency_Name: National Science Foundation # Grant:AGS-1304263 # Funding_Agency_Name: National Oceanic and Atmospheric Administration # Grant:NA14OAR4310176 #------------------ # Site_Information # Site_Name: Amédée Island, New Caledonia # Location: Ocean>Pacific Ocean>South Pacific Ocean>Melanesia>New Caledonia # Country: New Caledonia # Northernmost_Latitude: -22.48 # Southernmost_Latitude: -22.48 # Easternmost_Longitude: 166.47 # Westernmost_Longitude: 166.47 # Elevation: #------------------ # Data_Collection # Collection_Name: 02newc01b # Earliest_Year: 1968 # Most_Recent_Year: 1992 # Time_Unit: y_ad # Core_Length: # Notes: {"database":"LMR"} #------------------ # Species # Species_Name: Porites lutea # Common_Name: #------------------ # Chronology: # # # # # # # # #---------------- # Variables # # Data variables follow that are preceded by ## in columns one and two. # Data line variables format: Variables list, one per line, shortname-tab-longname-tab-longname components (9 components: what, material, error, units, seasonality, archive, detail, method, C or N for Character or Numeric data) # ##age age, , ,years AD, , Corals and Sclerosponges, , ,N ##sst_ORSTOM sea surface temperature reconstruction, , , degrees C, , Reconstructions, ORSTOM, ,N ##sss_ORSTOM sea surface salinity reconstruction, , , parts per thousand, , Reconstructions, ORSTOM, ,N ##sst_GISST2 sea surface temperature reconstruction, , , degrees C, , Reconstructions, GISST2, ,N # #---------------- # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing Values: NAN # age sst_ORSTOM sss_ORSTOM sst_GISST2 1992.62 20.89 36.06 22.54 1992.54 21.10 35.92 23.21 1992.46 22.65 35.97 23.95 1992.37 23.50 35.87 24.82 1992.29 24.38 NAN 25.72 1992.21 24.59 NAN 26.14 1992.12 25.52 NAN 26.76 1992.04 24.67 NAN 26.07 1991.96 23.57 NAN 24.95 1991.87 22.30 NAN 23.81 1991.79 21.64 NAN 23.13 1991.71 21.14 36.04 23.16 1991.62 20.51 35.97 22.75 1991.54 21.36 35.91 22.94 1991.46 21.57 35.86 23.58 1991.37 22.13 35.81 24.32 1991.29 23.76 35.59 25.48 1991.21 24.44 35.71 26.31 1991.12 25.88 35.78 26.93 1991.04 24.86 35.84 26.55 1990.96 24.03 35.80 25.56 1990.87 22.89 35.78 24.27 1990.79 21.87 35.98 23.00 1990.71 20.75 35.82 22.53 1990.62 21.27 35.66 22.81 1990.54 21.72 35.67 23.30 1990.46 22.95 35.59 23.97 1990.37 23.67 35.45 25.38 1990.29 24.63 35.41 26.37 1990.21 25.85 34.87 26.68 1990.12 25.89 34.90 27.14 1990.04 25.61 35.16 26.67 1989.96 24.61 35.67 25.84 1989.87 23.50 35.71 24.56 1989.79 22.18 35.63 23.82 1989.71 21.34 35.57 22.60 1989.62 20.88 35.37 22.29 1989.54 21.37 35.42 22.92 1989.46 22.47 35.29 23.53 1989.37 22.64 35.42 24.65 1989.29 23.55 35.34 25.52 1989.21 24.77 35.01 26.21 1989.12 25.12 35.27 26.65 1989.04 25.46 35.35 26.77 1988.96 24.67 35.66 25.91 1988.87 24.54 35.72 25.33 1988.79 23.07 35.95 24.57 1988.71 21.60 35.90 23.09 1988.62 21.43 35.84 23.09 1988.54 21.30 35.87 23.13 1988.46 22.69 35.84 23.79 1988.37 23.56 35.84 25.09 1988.29 24.95 NAN 26.18 1988.21 24.61 NAN 26.19 1988.12 24.99 35.55 26.70 1988.04 24.89 35.47 26.25 1987.96 24.02 35.96 25.19 1987.87 23.07 35.89 24.07 1987.79 22.22 35.87 23.06 1987.71 21.20 35.82 22.47 1987.62 20.72 35.73 22.40 1987.54 20.89 35.84 22.75 1987.46 21.72 35.74 23.31 1987.37 22.76 35.88 24.32 1987.29 23.66 35.95 25.38 1987.21 25.39 35.79 25.97 1987.12 24.46 35.81 26.05 1987.04 24.04 36.52 25.87 1986.96 23.13 35.72 24.93 1986.87 23.16 35.90 24.22 1986.79 22.50 36.24 23.47 1986.71 20.12 35.82 22.68 1986.62 20.33 35.71 22.44 1986.54 20.87 35.58 22.98 1986.46 22.09 35.41 23.73 1986.37 23.16 35.35 24.67 1986.29 23.80 35.39 25.57 1986.21 25.40 35.22 26.52 1986.12 27.00 35.65 27.38 1986.04 26.25 36.16 26.97 1985.96 24.36 35.69 25.74 1985.87 22.94 35.61 24.63 1985.79 22.53 35.54 23.11 1985.71 20.72 35.75 22.96 1985.62 20.05 35.85 22.31 1985.54 20.83 35.77 22.77 1985.46 21.96 35.69 23.91 1985.37 23.80 35.48 25.31 1985.29 25.19 35.44 26.33 1985.21 25.47 35.65 26.82 1985.12 26.63 35.67 27.61 1985.04 26.01 35.48 27.05 1984.96 25.71 35.67 26.25 1984.87 23.71 35.50 24.25 1984.79 22.29 35.95 23.01 1984.71 21.63 35.98 22.82 1984.62 21.12 35.93 22.48 1984.54 21.28 35.90 23.09 1984.46 21.73 35.64 23.50 1984.37 23.32 36.05 24.89 1984.29 24.34 35.92 26.01 1984.21 25.32 35.73 26.38 1984.12 24.90 35.77 25.84 1984.04 24.80 35.76 25.38 1983.96 23.57 35.99 24.88 1983.87 24.34 35.88 24.40 1983.79 22.74 35.94 23.35 1983.71 21.67 35.85 22.56 1983.62 20.35 35.84 21.63 1983.54 21.50 35.70 22.48 1983.46 22.63 35.59 23.65 1983.37 23.86 35.49 25.52 1983.29 25.77 35.36 26.29 1983.21 25.68 35.19 26.25 1983.12 25.51 35.20 26.46 1983.04 25.74 35.36 25.93 1982.96 24.33 35.65 25.07 1982.87 23.69 35.80 23.55 1982.79 22.76 35.82 22.45 1982.71 20.62 35.80 21.91 1982.62 19.82 35.95 21.88 1982.54 20.63 35.76 22.37 1982.46 22.05 35.72 23.37 1982.37 23.02 35.64 24.17 1982.29 23.98 35.57 25.13 1982.21 24.79 NAN 26.18 1982.12 25.34 NAN 26.82 1982.04 26.26 NAN 27.32 1981.96 24.27 NAN 25.69 1981.87 21.67 35.89 24.07 1981.79 21.86 35.98 23.01 1981.71 20.64 36.05 22.48 1981.62 20.71 35.82 22.32 1981.54 19.58 35.59 23.05 1981.46 22.47 35.75 24.02 1981.37 23.46 35.58 25.08 1981.29 24.70 35.63 26.23 1981.21 25.28 35.48 27.06 1981.12 26.01 35.55 27.27 1981.04 25.67 35.82 26.56 1980.96 24.06 35.83 25.17 1980.87 22.95 35.90 24.34 1980.79 23.00 35.86 23.35 1980.71 21.40 35.91 22.30 1980.62 21.36 35.74 22.06 1980.54 21.80 35.78 22.63 1980.46 22.92 35.76 23.76 1980.37 23.81 35.66 24.99 1980.29 24.71 35.66 25.95 1980.21 26.97 35.66 27.24 1980.12 27.50 35.69 27.67 1980.04 26.04 35.80 27.20 1979.96 24.90 35.92 26.07 1979.87 23.81 35.82 24.92 1979.79 22.24 35.87 23.76 1979.71 21.34 35.80 22.72 1979.62 20.69 35.86 22.36 1979.54 21.55 35.94 22.79 1979.46 22.36 35.94 23.89 1979.37 23.07 35.70 25.17 1979.29 24.57 35.65 26.17 1979.21 25.53 NAN 26.86 1979.12 24.91 35.57 26.80 1979.04 25.61 35.72 26.31 1978.96 24.79 35.94 25.16 1978.87 22.17 36.04 23.99 1978.79 21.53 36.18 22.97 1978.71 21.95 35.89 22.60 1978.62 20.93 35.86 22.58 1978.54 21.69 35.73 23.02 1978.46 22.83 35.82 24.06 1978.37 23.99 35.82 25.10 1978.29 25.50 35.74 26.22 1978.21 25.92 35.70 26.94 1978.12 26.02 35.77 27.09 1978.04 25.51 35.61 26.50 1977.96 24.65 35.81 25.51 1977.87 23.39 35.80 24.33 1977.79 22.17 35.80 22.98 1977.71 21.24 35.89 22.39 1977.62 20.95 35.94 22.33 1977.54 22.11 35.67 22.93 1977.46 22.26 35.70 23.90 1977.37 23.82 35.63 25.07 1977.29 24.44 35.62 26.22 1977.21 25.63 35.52 26.71 1977.12 25.68 35.45 26.91 1977.04 25.87 35.52 26.45 1976.96 25.75 35.53 25.81 1976.87 24.24 35.59 24.73 1976.79 25.24 35.44 23.49 1976.71 21.25 35.69 22.61 1976.62 21.56 35.58 22.53 1976.54 20.76 35.52 23.21 1976.46 22.93 35.36 24.07 1976.37 23.85 35.47 25.17 1976.29 25.98 35.16 26.35 1976.21 27.13 35.12 26.74 1976.12 26.26 35.37 26.83 1976.04 26.20 35.38 26.67 1975.96 24.97 35.70 25.99 1975.87 24.16 35.65 24.93 1975.79 23.87 35.75 23.92 1975.71 22.47 35.63 23.31 1975.62 21.61 35.55 23.15 1975.54 20.90 35.56 23.41 1975.46 22.80 35.68 24.35 1975.37 22.00 35.34 25.74 1975.29 25.29 35.35 26.57 1975.21 26.21 35.30 27.30 1975.12 25.32 35.53 27.11 1975.04 26.16 35.60 26.91 1974.96 25.71 35.51 25.85 1974.87 NAN NAN 24.70 1974.79 NAN NAN 23.67 1974.71 NAN NAN 22.98 1974.62 NAN NAN 22.82 1974.54 NAN NAN 23.26 1974.46 NAN NAN 24.08 1974.37 NAN NAN 25.05 1974.29 NAN NAN 26.20 1974.21 NAN NAN 26.78 1974.12 NAN NAN 27.16 1974.04 NAN NAN 26.97 1973.96 NAN NAN 26.33 1973.87 NAN NAN 25.49 1973.79 NAN NAN 24.29 1973.71 NAN NAN 23.43 1973.62 NAN NAN 23.31 1973.54 NAN NAN 23.81 1973.46 NAN NAN 24.60 1973.37 NAN NAN 25.55 1973.29 NAN NAN 26.39 1973.21 NAN NAN 27.27 1973.12 NAN NAN 27.41 1973.04 NAN NAN 26.82 1972.96 NAN NAN 25.53 1972.87 NAN NAN 24.60 1972.79 NAN NAN 23.42 1972.71 NAN NAN 22.60 1972.62 NAN NAN 22.44 1972.54 NAN NAN 22.84 1972.46 NAN NAN 23.44 1972.37 NAN NAN 24.51 1972.29 NAN NAN 25.67 1972.21 NAN NAN 26.22 1972.12 NAN NAN 26.06 1972.04 NAN NAN 25.72 1971.96 NAN NAN 25.20 1971.87 NAN NAN 24.46 1971.79 NAN NAN 23.74 1971.71 NAN NAN 23.13 1971.62 NAN NAN 22.82 1971.54 NAN NAN 23.03 1971.46 NAN NAN 23.91 1971.37 NAN NAN 24.75 1971.29 NAN NAN 25.67 1971.21 NAN NAN 26.69 1971.12 NAN NAN 27.12 1971.04 NAN NAN 26.80 1970.96 NAN NAN 25.88 1970.87 NAN NAN 24.90 1970.79 NAN NAN 23.67 1970.71 NAN NAN 22.96 1970.62 NAN NAN 22.71 1970.54 NAN NAN 23.22 1970.46 NAN NAN 24.04 1970.37 NAN NAN 25.12 1970.29 NAN NAN 26.36 1970.21 NAN NAN 27.34 1970.12 NAN NAN 27.32 1970.04 NAN NAN 26.95 1969.96 NAN NAN 25.72 1969.87 NAN NAN 24.40 1969.79 NAN NAN 23.37 1969.71 NAN NAN 22.77 1969.62 NAN NAN 22.46 1969.54 NAN NAN 23.05 1969.46 NAN NAN 24.24 1969.37 NAN NAN 25.18 1969.29 NAN NAN 26.20 1969.21 NAN NAN 26.80 1969.12 NAN NAN 26.67 1969.04 NAN NAN 26.36 1968.96 NAN NAN 25.27 1968.87 NAN NAN 24.13 1968.79 NAN NAN 23.24 1968.71 NAN NAN 22.73 1968.62 NAN NAN 22.53 1968.54 NAN NAN 22.99 1968.46 NAN NAN 23.78 1968.37 NAN NAN 24.84 1968.29 NAN NAN 25.75 1968.21 NAN NAN 26.48 1968.12 NAN NAN 26.45 1968.04 NAN NAN 26.16