{"NOAAStudyId":"19702","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2016-01-22","dataPublisher":"NOAA","dataType":"CORALS AND SCLEROSPONGES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/coral-sclerosponge","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-coral-19702.xml","doi":null,"earliestYearBP":5,"earliestYearCE":1945,"entryId":"noaa-coral-19702","funding":[{"fundingAgency":"National Science Foundation Chemical Oceanography","fundingGrant":null},{"fundingAgency":"National Science Foundation Climate Dynamics","fundingGrant":null}],"investigators":"Glynn, D.S.; Druffel, E.R.M.; Griffin, S.M.; Dunbar, R.B.; Osborne, M.C.; Sanchez-Cabeza, J.-A.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/19702","originalSource":null,"publication":[{"abstract":null,"author":{"name":"Michael C. Osborne, Robert B. Dunbar, David A. Mucciarone, Ellen Druffel, Joan-Albert Sanchez-Cabeza"},"citation":"Michael C. Osborne, Robert B. Dunbar, David A. Mucciarone, Ellen Druffel, Joan-Albert Sanchez-Cabeza. 2014. A 215-yr coral d18O time series from Palau records dynamics of the West Pacific Warm Pool following the end of the Little Ice Age. Coral Reefs. . doi: 10.1007/s00338-014-1146-1","edition":null,"identifier":{"id":"10.1007/s00338-014-1146-1","type":"doi","url":"http://dx.doi.org/10.1007/s00338-014-1146-1"},"issue":null,"journal":"Coral Reefs","pages":null,"pubRank":"2","pubYear":2014,"reportNumber":null,"title":"A 215-yr coral d18O time series from Palau records dynamics of the West Pacific Warm Pool following the end of the Little Ice Age","type":"publication","volume":null},{"abstract":"In order to evaluate the variability in surface water masses in the western Pacific warm pool, we report high-precision radiocarbon measurements in annual and seasonal bands from Porites lutea corals collected from the Palau Archipelago (7°N, 134°E). Annual coral bands from 1945 to 2008 and seasonal samples from 1953 to 1957 were analyzed to capture the initial early input of bomb 14C from surface thermonuclear weapons testing in the Marshall Islands. Results show a pre-bomb average d14C value of –54.9‰ between 1945 and early 1953. Beginning early in 1954, there is a rapid increase to a maximum of –23.1‰ at the start of 1955. Values continued to rise after 1957 to a post-bomb peak of 141‰ by 1976. The large initial rise in d14C cannot be accounted for by air-sea CO2 exchange. Results therefore suggest that the primary cause of this increase is the lateral advection of fallout-contaminated water from the Marshall Islands to Palau via the North Equatorial Current and then to the North Equatorial Countercurrent.","author":{"name":"Glynn, D.S., E.R.M. Druffel, S. Griffin, R. Dunbar, M. Osborne, and J.A. Sanchez-Cabeza"},"citation":"Glynn, D.S., E.R.M. Druffel, S. Griffin, R. Dunbar, M. Osborne, and J.A. Sanchez-Cabeza. 2013. Early Bomb Radiocarbon Detected in Palau Archipelago Corals. Radiocarbon, 55(2-3), 1659-1664. doi: 10.2458/azu_js_rc.55.16361","edition":null,"identifier":{"id":"10.2458/azu_js_rc.55.16361","type":"doi","url":"http://dx.doi.org/10.2458/azu_js_rc.55.16361"},"issue":"2-3","journal":"Radiocarbon","pages":"1659-1664","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Early Bomb Radiocarbon Detected in Palau Archipelago Corals","type":"publication","volume":"55"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"55842","geo":{"geoType":"Feature","geometry":{"coordinates":["7.2859","134.2503"],"type":"POINT"},"properties":{"easternmostLongitude":"134.2503","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"7.2859","southernmostLatitude":"7.2859","westernmostLongitude":"134.2503"}},"locationName":"Ocean>Pacific Ocean>Western Pacific Ocean>Micronesia>Palau","mappable":"Y","paleoData":[{"NOAADataTableId":"30329","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>corals and sclerosponges>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/glynn2013/glynn2013-ann-d14c.txt","linkText":"Annual D14C Data","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.>Porites lutea","cvMethod":"accelerator mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil NBS oxalic acid","cvWhat":"chemical composition>isotope>isotope ratio>Delta 14C"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.>Porites lutea","cvMethod":"accelerator mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil NBS oxalic acid","cvWhat":"chemical composition>isotope>isotope ratio>Delta 14C"}]}],"dataTableName":"Ulong annual d14C Glynn13","dataTableNotes":"Annual samples were collected from coral slabs UC-2-3 (1945–1982) and UC-3-2 (1982–2008) with annual growth varying from 1 to 1.5 cm. \r\n  Site depth is 12 m. ","earliestYear":1945,"earliestYearBP":5,"earliestYearCE":1945,"mostRecentYear":2008,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"30330","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>corals and sclerosponges>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/coral/west_pacific/glynn2013/glynn2013-seas-d14c.txt","linkText":"Seasonal D14C Data","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"CORALS AND SCLEROSPONGES","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>organism>coral>Porites sp.>Porites lutea","cvMethod":"accelerator mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil NBS oxalic acid","cvWhat":"chemical composition>isotope>isotope ratio>Delta 14C"}]}],"dataTableName":"Ulong seasonal d14C Glynn13","dataTableNotes":"Seasonal samples were taken for the years 1953–1957 from slab UC-2-3. Seasonal samples were drilled every 1 mm. Site depth is 12 m.","earliestYear":1953,"earliestYearBP":-3,"earliestYearCE":1953,"mostRecentYear":1957,"mostRecentYearBP":-7,"mostRecentYearCE":1957,"species":[],"timeUnit":"AD"}],"siteName":"Ulong Channel"}],"studyCode":null,"studyName":"Western Tropical Pacific - Palau Archipelago, 1945-2008 CE, Porites lutea Coral D14C Data","studyNotes":"Palau coral radiocarbon data from 1945 to 2008 CE, record of thermonuclear weapons testing in the Marshall Islands. Annual samples were collected from coral slabs UC-2-3 (1945-1982) and UC-3-2 (1982-2008) with annual growth varying from 1 to 1.5 cm. Seasonal samples were taken for the years 1953-1957 from slab UC-2-3. Seasonal samples were drilled every 1 mm. Radiocarbon values corrected for known age to 1950 according to convention (Stuiver and Polach 1977). Site depth is 12 m.","version":"1.0","xmlId":"17474"}