# Central Equatorial Pacific Isotope and Amino Acid Data During the Late Holocene #----------------------------------------------------------------------- # 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/38820 # 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-38820.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: 10.25921/3nzr-yg28 # # Science_Keywords: Tropics, Biogeochemical cycles, ENSO, Decadal resolution #--------------------------------------- # Resource_Links # # Data_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/coral/central_pacific/guilderson2024/guilderson2024-kingman-k1-iso.txt # Data_Download_Description: NOAA Template File; Kingman Reef Sample K1 d15N, d13C Data # #--------------------------------------- # Contribution_Date # Date: 2023-12-20 #--------------------------------------- # File_Last_Modified_Date # Date: 2025-04-17 #--------------------------------------- # Title # Study_Name: Central Equatorial Pacific Isotope and Amino Acid Data During the Late Holocene #--------------------------------------- # Investigators # Investigators: Guilderson, Thomas (https://orcid.org/0000-0001-9371-7059); Glynn, Danielle; McCarthy, Matthew #--------------------------------------- # Description_Notes_and_Keywords # Description: water depth approx 400m. #--------------------------------------- # Publication # Authors: Guilderson, T.P., D.S. Glynn, and M.D. McCarthy # Published_Date_or_Year: 2024 # Published_Title: Tropical Decadal Variability in nutrient supply and phytoplankton community in the Central Equatorial Pacific During the Late Holocene. # Journal_Name: Nature Scientific Reports # Volume: 14 # Edition: # Issue: # Pages: # Report_Number: 4161 # DOI: 10.1038/s41598-024-54635-3 # Online_Resource: # Full_Citation: # Abstract: We have reconstructed baseline d15N and d13C of export production at Kingman Reef in the Central Equatorial Pacific (CEP) at sub-decadal resolution, nearly continuously over the last 2000 years. The changes in d15N reflects the strength of the North Equatorial Counter Current (NECC) relative to the South Equatorial Current (SEC), and to a lesser extent, the North Equatorial Current (NEC). Seasonal to multi-decadal variation in the strength of these currents, through the redistribution of heat, have global climate impacts and influence marine and terrestrial ecosystems. We use modern El Niño-La Nina dynamics and Tropical Pacific Decadal Variability (TPDV), which is defined in the CEP, as a framework for analyzing isotopic data. The CEP d15N and d13C records exhibit consistent multi-decadal (50-60 year) TPDV variability. A large multi-centennial feature in the CEP d15N data, within age-model uncertainties, is consistent with one of the prolonged dry-pluvial sequences in the American west at the end of the Medieval Climate Anomaly, where low TPDV is correlated with drier conditions. This unique record shows that the strength of the NECC, as reflected in baseline d15N and d13C, has at quasi-predictable intervals throughout the late Holocene, toggled the phytoplankton community between prokaryotes and picoplankton versus eukaryotes. #--------------------------------------- # Funding_Agency # Funding_Agency_Name: NOAA/National Undersea Research Program # Grant: University of Hawaii's Hawaii Undersea Research Laboratory (HURL) #--------------------------------------- # Funding_Agency # Funding_Agency_Name: National Geographic Society # Grant: CRE 7717-04 #--------------------------------------- # Funding_Agency # Funding_Agency_Name: US National Science Foundation # Grant: GRFP 1339067, OCE-0551481 #--------------------------------------- # Site_Information # Site_Name: Kingman Reef # Location: Line Islands, Central Equatorial Pacific # Northernmost_Latitude: 6.38 # Southernmost_Latitude: 6.38 # Easternmost_Longitude: -162.42 # Westernmost_Longitude: -162.42 # Elevation_m: -400 #--------------------------------------- # Data_Collection # Collection_Name: Kingman K1 isotope Guilderson2024 # First_Year: 1232 # Last_Year: 2005 # Time_Unit: year Common Era # Core_Length_m: # Parameter_Keywords: carbon isotopes, age control, chemistry # Notes: #--------------------------------------- # Chronology_Information # Chronology: Radiocarbon # Chronology_Download_Resource: https://www.ncei.noaa.gov/pub/data/paleo/templates/noaa-wds-paleo-14c-terms.csv # Chronology_Download_Description: Radiocarbon terms and definitions. # Chronology_Notes: Radiocarbon analyses on acid-pretreated skeletal material at the Center for Accelerator Mass Spectrometry. Fraction modern as per Stuiver and Polach (1977) is equivalent to F14C of Reimer et al. (2004). Post-1950 ages in K1 were estimated using a surface water F14C reconstruction from nearby Palmyra # Rejection_Rationale: # Reservoir_Method: DELTA_R relative to Marine20 using Zaunbracher et al. (2010) surface coral data # Calibration_Method: Marine20 (Heaton et al. 2020) # Age_Model_Method: Bacon # Missing_Values: # Chronology_Table: # samp_id lab_code frac_mod frac_mod_1s age_14C_BP1950 age_14C_1s_yr age_calib_BP1950 age_calib_1s_yr depth_mm calib_curve delta_R_yr delta_R_uncert_yr # PIV146_collected NA NA NA NA NA -57 1 0.0 None 0 0 # PIV146_G2_007 CAMS-166969 1.0827 0.0045 NA NA -20 3 0.7 None 0 0 # PIV146_G2_036 CAMS-166970 0.9372 0.0032 520 30 NA NA 3.6 Marine20 -134 25 # PIV146_G2_058 CAMS-166971 0.9251 0.0032 625 30 NA NA 5.8 Marine20 -134 25 # PIV146_G2_072 CAMS-166972 0.9335 0.0036 555 35 NA NA 7.2 Marine20 -134 25 # PIV146_G2_090 CAMS-CAMS-166973 0.9197 0.0038 670 35 NA NA 9.0 Marine20 -134 25 # PIV146_G2_109 CAMS-166974 0.8575 0.003 1235 30 NA NA 10.9 Marine20 -134 25 #--------------------------------------- # 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) # ## SampleID sample identification,,,,,corals and sclerosponges,,,C, ## depth_mm depth,,,millimeter,,corals and sclerosponges,,,N,Radial distance edge; computerized micromill ## year_CE age,,,year Common Era,,corals and sclerosponges,,,N,Common Era Age estimate; BACON output ## year_BP age,,,calendar year before present,,corals and sclerosponges,,,N,Years BP Age estimate; BACON output ## year_BP-95%CI age,,95% confidence interval margin of error,calendar year before present,,corals and sclerosponges,,,N,Age estimate uncertainty 95% Confidence Interval; BACON output ## C/N carbon/nitrogen,Kulamanamana sp.,,atomic ratio,,corals and sclerosponges,,elemental analysis; isotope ratio mass spectrometry,N,precision: 0.2 ## d15N-Kula.sp delta 15N,Kulamanamana sp.,,per mil AIR,,corals and sclerosponges,,elemental analysis; isotope ratio mass spectrometry,N,Bulk skeletal nitrogen isotope data; precision <0.1 per mil ## d13C-Kula.sp delta 13C,Kulamanamana sp.,,per mil VPDB,,corals and sclerosponges,,elemental analysis; isotope ratio mass spectrometry,N,Bulk skeletal carbon isotope data; precision <0.1 per mil #------------------------ # Data: # Data lines follow (have no #) # Data line format - tab-delimited text, variable short name as header # Missing_Values: NA SampleID depth_mm year_CE year_BP year_BP-95%CI C/N d15N-Kula.sp d13C-Kula.sp PIV 146 G2 1 0.1 2005 -57 5 2.80 15.43 -17.19 PIV 146 G2 2 0.2 1996 -46 12 2.81 15.77 -17.38 PIV 146 G2 3 0.3 1991 -41 18 2.77 16.33 -17.30 PIV 146 G2 4 0.4 1986 -36 15 2.79 16.76 -16.84 PIV 146 G2 5 0.5 1981 -31 15 2.74 16.62 -16.72 PIV 146 G2 6 0.6 1976 -26 15 2.79 16.69 NA PIV 146 G2 7 0.7 1970 -20 11 2.77 16.66 -16.79 PIV 146 G2 8 0.8 1965 -15 13 2.79 16.77 -16.73 PIV 146 G2 9 0.9 1959 -9 18 2.74 16.65 -16.61 PIV 146 G2 10 1 1953 -3 19 2.74 16.78 -16.50 PIV 146 G2 11 1.1 1948 2 23 2.84 16.99 -16.55 PIV 146 G2 12 1.2 1942 8 29 2.70 17.41 -16.41 PIV 146 G2 13 1.3 1936 14 30 2.77 17.33 -16.49 PIV 146 G2 14 1.4 1931 19 33 2.84 17.15 -16.52 PIV 146 G2 15 1.5 1925 25 39 2.74 17.05 -16.32 PIV 146 G2 16 1.6 1920 30 39 2.76 17.05 -16.41 PIV 146 G2 17 1.7 1914 36 41 2.72 16.98 -16.43 PIV 146 G2 18 1.8 1908 42 45 2.74 17.08 -16.24 PIV 146 G2 19 1.9 1903 47 46 2.71 17.11 -16.38 PIV 146 G2 20 2 1897 53 48 2.72 17.05 -16.33 PIV 146 G2 21 2.1 1892 58 52 2.72 17.47 -16.34 PIV 146 G2 22 2.2 1886 64 51 2.72 17.49 -16.11 PIV 146 G2 23 2.3 1881 69 53 2.71 17.68 -16.11 PIV 146 G2 24 2.4 1875 75 56 2.74 17.70 -16.15 PIV 146 G2 25 2.5 1869 81 56 2.74 17.33 -16.22 PIV 146 G2 26 2.6 1864 86 57 2.71 17.17 -16.11 PIV 146 G2 27 2.7 1858 92 61 2.73 17.05 -16.13 PIV 146 G2 28 2.8 1852 98 61 2.73 17.09 -16.23 PIV 146 G2 29 2.9 1847 103 62 2.72 17.26 -15.95 PIV 146 G2 30 3 1841 109 65 2.71 17.51 -15.96 PIV 146 G2 31 3.1 1836 114 65 2.72 17.61 -15.70 PIV 146 G2 32 3.2 1830 120 67 2.69 17.65 -15.82 PIV 146 G2 33 3.3 1824 126 68 2.70 17.68 -15.64 PIV 146 G2 34 3.4 1819 131 68 2.72 17.75 -15.68 PIV 146 G2 35 3.5 1813 137 70 2.70 17.61 -15.56 PIV 146 G2 36 3.6 1807 143 72 2.74 17.73 -15.73 PIV 146 G2 37 3.7 1802 148 72 2.72 17.67 -15.71 PIV 146 G2 38 3.8 1796 154 73 2.71 17.74 -15.67 PIV 146 G2 39 3.9 1790 160 74 2.72 17.72 -15.71 PIV 146 G2 40 4 1784 166 74 2.73 17.71 -15.71 PIV 146 G2 41 4.1 1779 171 75 2.72 17.89 -15.89 PIV 146 G2 42 4.2 1773 177 77 2.78 17.72 -15.93 PIV 146 G2 43 4.3 1767 183 77 2.71 17.37 -16.09 PIV 146 G2 44 4.4 1761 189 78 2.72 17.47 -15.85 PIV 146 G2 45 4.5 1756 194 81 2.72 17.64 -15.86 PIV 146 G2 46 4.6 1750 200 81 2.71 17.39 -15.91 PIV 146 G2 47 4.7 1744 206 81 2.72 17.48 -15.84 PIV 146 G2 48 4.8 1738 212 83 2.75 17.71 -15.97 PIV 146 G2 49 4.9 1732 218 83 2.73 17.65 -15.83 PIV 146 G2 50 5 1727 223 84 2.70 17.55 -15.69 PIV 146 G2 51 5.1 1721 229 85 2.74 17.41 -15.86 PIV 146 G2 52 5.2 1715 235 84 2.74 17.57 -15.75 PIV 146 G2 53 5.3 1709 241 86 2.69 17.55 -15.66 PIV 146 G2 54 5.4 1703 247 87 2.73 17.57 -15.84 PIV 146 G2 55 5.5 1697 253 87 2.71 17.64 -15.79 PIV 146 G2 56 5.6 1692 258 88 2.70 17.43 -15.92 PIV 146 G2 57 5.7 1686 264 89 2.70 17.30 NA PIV 146 G2 58 5.8 1680 270 90 2.70 17.06 -15.89 PIV 146 G2 59 5.9 1674 276 91 2.72 17.25 -15.93 PIV 146 G2 60 6 1668 282 93 2.72 17.37 -15.88 PIV 146 G2 61 6.1 1661 289 93 2.67 17.71 -15.86 PIV 146 G2 62 6.2 1655 295 94 2.69 17.87 -16.11 PIV 146 G2 63 6.3 1649 301 96 2.68 17.86 -15.95 PIV 146 G2 64 6.4 1642 308 96 2.69 17.50 -15.72 PIV 146 G2 65 6.5 1636 314 97 2.69 17.55 -15.83 PIV 146 G2 66 6.6 1629 321 98 2.67 17.51 -15.91 PIV 146 G2 67 6.7 1623 327 98 2.68 17.57 -15.71 PIV 146 G2 68 6.8 1616 334 99 2.65 17.44 -15.75 PIV 146 G2 69 6.9 1610 340 101 2.67 17.79 -15.66 PIV 146 G2 70 7 1604 346 102 2.68 17.74 -15.72 PIV 146 G2 71 7.1 1597 353 102 2.68 17.89 -15.65 PIV 146 G2 72 7.2 1591 359 103 2.70 17.75 -15.70 PIV 146 G2 73 7.3 1583 367 103 2.67 17.43 -15.78 PIV 146 G2 74 7.4 1576 374 104 2.69 17.59 -15.79 PIV 146 G2 75 7.5 1568 382 107 2.64 17.20 -15.78 PIV 146 G2 76 7.6 1560 390 107 2.68 17.57 -15.62 PIV 146 G2 77 7.7 1553 397 107 2.68 17.80 -15.64 PIV 146 G2 78 7.8 1545 405 110 2.66 17.58 -15.90 PIV 146 G2 79 7.9 1538 412 110 2.69 17.68 -15.65 PIV 146 G2 80 8 1530 420 112 2.71 17.50 -15.67 PIV 146 G2 81 8.1 1523 427 114 2.66 17.65 -15.84 PIV 146 G2 82 8.2 1515 435 113 2.71 17.53 -15.95 PIV 146 G2 83 8.3 1507 443 113 2.69 17.35 -16.06 PIV 146 G2 84 8.4 1500 450 116 2.69 17.61 -16.02 PIV 146 G2 85 8.5 1492 458 115 2.73 17.60 -16.01 PIV 146 G2 86 8.6 1484 466 116 2.68 17.77 -15.83 PIV 146 G2 87 8.7 1477 473 118 2.73 18.05 -15.69 PIV 146 G2 88 8.8 1469 481 117 2.74 17.70 -15.80 PIV 146 G2 89 8.9 1461 489 117 2.73 17.43 -15.65 PIV 146 G2 90 9 1454 496 119 2.81 17.31 -15.53 PIV 146 G2 91 9.1 1443 507 118 2.69 17.05 -15.83 PIV 146 G2 92 9.2 1433 517 120 2.69 16.76 -15.74 PIV 146 G2 93 9.3 1422 528 123 2.70 16.61 -15.99 PIV 146 G2 94 9.4 1411 539 122 2.70 16.75 -16.12 PIV 146 G2 95 9.5 1400 550 123 2.71 16.63 -15.93 PIV 146 G2 96 9.6 1388 562 127 2.68 16.62 -16.19 PIV 146 G2 97 9.7 1377 573 126 2.71 16.97 -16.06 PIV 146 G2 98 9.8 1366 584 128 2.72 17.16 -16.12 PIV 146 G2 99 9.9 1355 595 130 2.73 17.37 -16.04 PIV 146 G2 100 10 1343 607 130 2.76 17.45 -16.06 PIV 146 G2 101 10.1 1332 618 129 2.76 17.72 -15.96 PIV 146 G2 102 10.2 1321 629 132 2.75 17.86 -16.03 PIV 146 G2 103 10.3 1310 640 130 2.72 17.46 -16.31 PIV 146 G2 104 10.4 1298 652 131 2.64 17.96 -16.44 PIV 146 G2 105 10.5 1287 663 133 2.67 17.40 -16.11 PIV 146 G2 106 10.6 1276 674 132 2.67 17.50 -15.98 PIV 146 G2 107 10.7 1265 685 133 2.65 17.38 -16.07 PIV 146 G2 108 10.8 1253 697 135 2.69 17.09 -16.36 PIV 146 G2 109 10.9 1243 707 137 2.71 17.12 -16.12 PIV 146 G2 110 11 1232 718 137 2.71 17.05 -16.07