# Gingerbreads Reef, Bahamas Sr-U thermometry Data from 1961-1990 CE #----------------------------------------------------------------------- # World Data Service for Paleoclimatology, Boulder # and # NOAA Paleoclimatology Program #----------------------------------------------------------------------- # Template Version 4.0 # Encoding: UTF-8 # NOTE: Please cite original publication, NOAA Landing Page URL, dataset and publication DOIs (where available), and date accessed when using downloaded data. # If there is no publication information, please cite investigator, study title, NOAA Landing Page URL, and date accessed. # # Description/Documentation lines begin with '#' followed by a space # Data lines have no '#' # # NOAA_Landing_Page: https://www.ncei.noaa.gov/access/paleo-search/study/37159 # Landing_Page_Description: NOAA Landing Page of this file's parent study, which includes all study metadata. # # Study_Level_JSON_Metadata: https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/json/noaa-coral-37159.json # Study_Level_JSON_Description: JSON metadata of this data file's parent study, which includes all study metadata. # # Data_Type: Corals and Sclerosponges # # Dataset_DOI: 10.25921/qwcy-sh53 # # Science_Keywords: Sea Surface Temperature Reconstruction #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/atlantic/galochkina2022/galochkina2022-gingerbreads_geochem_annual.txt # Data_Download_Description: NOAA Template File; Sr-U Annual Dataset # #--------------------------------------- # Contribution_Date # Date: 2022-12-27 #--------------------------------------- # File_Last_Modified_Date # Date: 2023-08-14 #--------------------------------------- # Title # Study_Name: Gingerbreads Reef, Bahamas Sr-U thermometry Data from 1961-1990 CE #--------------------------------------- # Investigators # Investigators: Galochkina, Mariya (0000-0002-8245-7236); Cohen, Anne L. (0000-0002-5570-780X); Oppo, Delia W. (0000-0003-2946-5904); Mollica, Nathaniel R. (0000-0003-4751-8061); Horton, Forrest (0000-0001-9524-8874) #--------------------------------------- # Description_Notes_and_Keywords # Description: #--------------------------------------- # Publication # Authors: M. Galochkina, A.L. Cohen, D.W. Oppo, N. Mollica, and F. Horton # Published_Date_or_Year: 2023-07-01 # Published_Title: Coral Sr-U thermometry tracks ocean temperature and reconciles Sr/Ca discrepancies caused by Rayleigh fractionation # Journal_Name: Paleoceanography and Paleoclimatology # Volume: 38 # Edition: # Issue: 7 # Pages: # Report_Number: e2022PA004541 # DOI: 10.1029/2022PA004541 # Online_Resource: # Full_Citation: # Abstract: Understanding climate change at the spatiotemporal scales necessary to improve climate projections requires proxy records that complement sparse and often contradictory observational temperature datasets. Massive long-lived corals have tremendous potential in this regard, continuously recording information about ocean conditions as they grow. Nevertheless, extracting accurate ocean temperatures from corals is challenging because factors other than temperature influence skeletal chemistry. Here, we tested the ability of the coral Sr-U thermometer to accurately capture annual sea surface temperatures (SSTs) in the subtropical Atlantic, where year-to-year temperatures vary by ~1°C. Using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS), we generated sufficient U/Ca – Sr/Ca pairs from a slow-growing (1−2 mm/yr) Siderastrea siderea coral to calculate annual Sr-U values. With the fine-scale spatial resolution attained using the laser, skeleton accreted during both fast and slow growing times of the year was represented in our sampling. The resulting 30-year-long Sr-U record tracked the amplitude and timing of annual SST to within ±0.2°C of observations (r = −0.71), whereas the Sr/Ca record did not (r = 0.23). Furthermore, Sr-U corrected for Sr/Ca offsets among adjacent skeletal elements approximately 1 mm apart. These offsets are equivalent to differences of 2–3°C if typical Sr/Ca–SST calibrations are applied. Our observations indicate that Sr-U can accurately constrain decadal-to-multidecadal variability and secular SST trends in regions where this information is urgently needed. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Science Foundation # Grant: OCE-MGG 2016133; 2141064 #--------------------------------------- # Site_Information # Site_Name: Gingerbreads Reef # Location: Bahamas # Northernmost_Latitude: 25.84 # Southernmost_Latitude: 25.84 # Easternmost_Longitude: -78.62 # Westernmost_Longitude: -78.62 # Elevation_m: -4 #--------------------------------------- # Data_Collection # Collection_Name: Gingerbreads_geochem_annual # First_Year: 1961 # Last_Year: 1990 # Time_Unit: year Common Era # Core_Length_m: # Parameter_Keywords: trace metals, chemistry # Notes: #--------------------------------------- # Chronology_Information # Chronology: #--------------------------------------- # Variables # PaST_Thesaurus_Download_Resource: https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf # PaST_Thesaurus_Download_Description: Paleoenvironmental Standard Terms (PaST) Thesaurus terms, definitions, and relationships in SKOS format. # # Data variables follow that are preceded by "##" in columns one and two. # Variables list, one per line, shortname-tab-var components: what, material, error, units, seasonality, data type, detail, method, C or N for Character or Numeric data) # ## Year age,,,year Common Era,,corals and sclerosponges,,,N, ## Sr-U strontium-uranium,Siderastrea siderea,,millimole per mole,annual,corals and sclerosponges,,inductively-coupled plasma mass spectrometry,N, ## Sr-U_Error strontium-uranium,Siderastrea siderea,,millimole per mole,annual,corals and sclerosponges,,inductively-coupled plasma mass spectrometry,N,error bootstrapped standard error on annual Sr-U ## Sr/Ca strontium/calcium,Siderastrea siderea,,micromole per mole,annual,corals and sclerosponges,,inductively-coupled plasma mass spectrometry,N, ## Sr/Ca_Error strontium/calcium,Siderastrea siderea,one standard error,micromole per mole,annual,corals and sclerosponges,,inductively-coupled plasma mass spectrometry,N,standard error on mean annual Sr/Ca ## Transect notes,,,,,corals and sclerosponges,,,C,transect name; based on section of coral sampled. FT = full 60 mm transect sampled on single thecal wall; thec= wide sampling swath on thecal wall; right =wide sampling swath on right calyx; left = wide sampling swath on left calyx #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA Year Sr-U Sr-U_Error Sr/Ca Sr/Ca_Error Transect 1990 8.960086 0.041389 8.95357 0.0261758 FT 1989 9.045219 0.015689 8.975018 0.027829 FT 1988 9.081168 0.029205 8.910109 0.0416098 FT 1987 8.991993 0.027483 8.823448 0.0388925 FT 1986 8.993218 0.025616 8.926305 0.0337012 FT 1985 8.942638 0.029804 8.798041 0.0331228 FT 1984 9.072847 0.019688 8.951188 0.0305636 FT 1983 9.034219 0.031367 8.849992 0.0324422 FT 1982 8.940348 0.027504 8.865948 0.0246457 FT 1981 9.038525 0.015799 8.918518 0.0287142 FT 1980 9.011214 0.053017 9.029307 0.0365402 FT 1979 9.036327 0.022469 8.963095 0.0325304 FT 1978 8.979465 0.038478 8.899129 0.0605347 FT 1977 8.949758 0.062896 9.027517 0.0420439 FT 1976 9.062779 0.051958 9.021082 0.046292 FT 1975 8.93125 0.048145 8.965976 0.0390603 FT 1974 9.101318 0.004205 8.831138 0.0315548 FT 1973 8.956922 0.027318 8.865956 0.0318775 FT 1972 8.994422 0.026755 8.896022 0.0259309 FT 1971 8.981698 0.031128 8.900582 0.0367098 FT 1970 8.999589 0.02127 8.874888 0.0299419 FT 1969 8.972183 0.021688 8.915627 0.028298 FT 1968 8.953245 0.018929 8.84654 0.0246756 FT 1967 9.003585 0.027114 9.013357 0.0235505 FT 1966 8.993398 0.048082 9.063179 0.0248047 FT 1965 9.01421 0.073702 9.071005 0.0396637 FT 1964 8.961717 0.030115 8.977995 0.0266128 FT 1963 9.023494 0.026673 8.957177 0.0325163 FT 1962 8.822995 0.17279 9.138548 0.0583795 FT 1961 8.892357 0.078233 9.044566 0.0435984 FT