# Great Barrier Reef, Porites spp. bimonthly trace elements 1990-2013 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/34392 # 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-34392.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: # # Science_Keywords: #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/west_pacific/great_barrier/dolivo2018/dolivo2018-myr13_7.txt # Data_Download_Description: NOAA Template File; MYR13_7 Trace Metals Data # # Original_Source_URL: https://data.mendeley.com/datasets/ww8mvgzymf/2 # Original_Source_Description: Data supplement at Mendeley where a copy of the data was obtained. #--------------------------------------- # Contribution_Date # Date: 2024-02-09 #--------------------------------------- # File_Last_Modified_Date # Date: 2024-02-09 #--------------------------------------- # Title # Study_Name: Great Barrier Reef, Porites spp. bimonthly trace elements 1990-2013 CE #--------------------------------------- # Investigators # Investigators: D'Olivo, Juan Pablo (https://orcid.org/0000-0002-3291-7484); Sinclair, Daniel J.; Rankenburg, Kai (https://orcid.org/0000-0003-3708-9304); McCulloch, Malcolm Thomas (https://orcid.org/0000-0003-1538-1558) #--------------------------------------- # Description_Notes_and_Keywords # Description: Contributed as part of the Great Barrier Reef Coral Skeletal Records Database (GBRCD). # Provided Keywords: Great Barrier Reef, Trace elements, Coral, Multiproxy calibration #--------------------------------------- # Publication # Authors: D'Olivo, J.P., Sinclair, D.J., Rankenburg, K. and McCulloch, M.T. # Published_Date_or_Year: 2018 # Published_Title: A universal multi-trace element calibration for reconstructing sea surface temperatures from long-lived Porites corals: Removing 'vital-effects' # Journal_Name: Geochimica et Cosmochimica Acta # Volume: 239 # Edition: # Issue: # Pages: 109-135 # Report_Number: # DOI: 10.1016/j.gca.2018.07.035 # Online_Resource: # Full_Citation: # Abstract: Trace element abundances in corals can potentially provide high-resolution seasonally resolved constraints on past sea-surface temperatures, much needed to improve our understanding of climate variability on interannual to centennial time scales. A major limitation to the general application of trace element (TE) paleo-thermometers to coral fossil records is the presence of ‘vital effects’, which result in the need for colony-specific temperature calibrations. Here we demonstrate that reliable proxy temperatures from massive Porites corals can be achieved by using a universal multi-trace element calibration scheme (UMTECS). Using modern massive Porites corals living in well characterized sea surface temperature (SST) environments we first confirm that Sr/Ca and Li/Mg ratios are the most robust SST proxies compared to other trace element ratios (Mg/Ca, U/Ca, B/Ca and Li/Ca). Importantly we find that the slopes (and intercepts) of the Sr/Ca vs SST relationship are linearly correlated with the slopes from the Li/Mg vs SST relationship and provide a simple mathematical explanation for this phenomenon based on the tendency for all coral data to cluster around a single common ‘centroid’. Based on this tight empirical correlation between Sr/Ca and Li/Mg thermometers we show that a ‘universal’ calibration strategy can be applied that largely circumvents ‘vital effects’. Using this approach, we show that accurate more reliable reconstructions of paleo-temperatures can be undertaken using fossil Porites corals without the need for a priori colony-specific temperature calibrations. The general viability of this approach is demonstrated using an independent set of coral data where we show that UMTECS outperforms other ‘aggregating’ calibration techniques. For P. lutea and P. lobata the scheme produces temperature estimates with root-mean-square errors (RMSE) that are only 0.3 °C larger than those using colony-specific calibrations. This compares with ‘averaged TE-SST calibrations’ which produce RMSEs between 0.4 and 0.6 °C larger than colony-specific calibrations for P. lutea and P. lobata. However, we note that the success of our approach diminishes where data for individual corals deviate markedly from the common centroid, which appear to be related to species differences. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Australian Research Council # Grant: Laureate Fellowship FL120100049 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: Consejo Nacional de Ciencia y Tecnología (CONACyT) # Grant: 238264 #--------------------------------------- # Site_Information # Site_Name: Myrmidon Reef # Location: Australia # Northernmost_Latitude: -18.27 # Southernmost_Latitude: -18.27 # Easternmost_Longitude: 147.38 # Westernmost_Longitude: 147.38 # Elevation_m: -5.2 #--------------------------------------- # Data_Collection # Collection_Name: MYR13_7 Trace Metals DOlivo2018 # First_Year: 2004 # Last_Year: 2009 # Time_Unit: year Common Era # Core_Length_m: # Parameter_Keywords: trace metals # Notes: Porites lutea #--------------------------------------- # 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) # ## age_CE age,Porites lutea,,year Common Era,,corals and sclerosponges,,,N, ## Mg/Ca Magnesium/Calcium,Porites lutea,,millimole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer ## Sr/Ca Strontium/Calcium,Porites lutea,,millimole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer ## U/Ca Uranium/Calcium,Porites lutea,,micromole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer ## Li/Mg Lithium/Magnesium,Porites lutea,,millimole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer ## B/Ca Boron/Calcium,Porites lutea,,micromole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer ## Li/Ca Lithium/Calcium,Porites lutea,,micromole per mole,,corals and sclerosponges,interpolated,inductively-coupled plasma mass spectrometry,N,Bimonthly interpolation. Thermo Fisher Scientific X Series II quadrupole inductively coupled plasma mass spectrometer #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA age_CE Mg/Ca Sr/Ca U/Ca Li/Mg B/Ca Li/Ca Jun-04 5.152048778 8.928519 0.92631 1.400316 411.74183 7.20929471 Aug-04 5.010869583 8.973065 0.95616 1.44334 416.672647 7.23267936 Oct-04 5.027744697 8.90808 0.945844 1.372156 403.561959 6.89643252 Dec-04 5.22671872 8.835639 0.923111 1.26818 386.129111 6.61459132 Feb-05 5.469778258 8.798375 0.903156 1.191749 372.996803 6.51550048 Apr-05 5.399534265 8.852347 0.918366 1.259756 382.676016 6.79775472 Jun-05 5.145354504 8.956849 0.937581 1.390286 406.829387 7.14678235 Aug-05 5.014955404 8.979066 0.954248 1.421988 415.020295 7.13111235 Oct-05 5.080696042 8.935378 0.962282 1.332117 400.83365 6.76269041 Dec-05 5.2670412 8.841382 0.939386 1.215784 376.522268 6.40096861 Feb-06 5.490323234 8.838417 0.918848 1.195311 370.007854 6.56295601 Apr-06 5.477184287 8.899704 0.909529 1.284776 389.72855 7.02827779 Jun-06 5.129827094 8.987297 0.942609 1.402615 412.683793 7.18482963 Aug-06 4.88946338 9.018246 0.976341 1.463451 421.920881 7.15530269 Oct-06 4.912780192 8.968195 0.969354 1.404383 412.646158 6.89684137 Dec-06 5.098081148 8.885162 0.946984 1.298689 392.94663 6.61094984 Feb-07 5.390108345 8.842319 0.920759 1.228298 374.632148 6.61896581 Apr-07 5.336866395 8.878813 0.928926 1.292265 388.30847 6.88930746 Jun-07 5.081766189 8.959279 0.963302 1.39197 409.790067 7.06718038 Aug-07 4.871501645 8.99359 0.990101 1.455202 418.964152 7.08382377 Oct-07 5.064643638 8.927181 0.971435 1.342422 397.895008 6.79149284 Dec-07 5.306327492 8.851698 0.95285 1.222394 372.107152 6.48218251 Feb-08 5.470685042 8.833709 0.923013 1.232073 371.128478 6.73835094 Apr-08 5.336514417 8.903886 0.932805 1.349638 395.097483 7.19658541 Jun-08 5.049316777 8.990764 0.971094 1.465375 410.515143 7.3939232 Aug-08 4.970079135 9.028184 0.986969 1.472863 410.718239 7.31407182 Oct-08 5.17950678 8.931233 0.968121 1.344664 391.007315 6.95617418 Dec-08 5.409367208 8.824545 0.927948 1.215325 367.714697 6.57011831 Feb-09 5.498649594 8.820208 0.911216 1.214638 370.046747 6.67857297 Apr-09 5.540885623 8.857271 0.905227 1.264302 376.199489 7.0041317 Jun-09 5.388586802 8.931947 0.920364 1.374961 406.428068 7.40329532 Aug-09 5.082043904 8.974161 0.947849 1.445466 414.538868 7.34485856