{"NOAAStudyId":"17267","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":"2014-10-01","dataPublisher":"NOAA","dataType":"TREE RING","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-17267.xml","doi":"https://doi.org/10.25921/nyc7-0459","earliestYearBP":-45,"earliestYearCE":1995,"entryId":"noaa-tree-17267","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"AGS0902794, EAR0929983 "},{"fundingAgency":"Australian Research Council  ","fundingGrant":"DP0878744"}],"investigators":"Boysen, B.M.M.; Evans, M.N.; Baker, P.J.","mostRecentYearBP":-60,"mostRecentYearCE":2010,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/17267","originalSource":null,"publication":[{"abstract":"Long-lived trees from tropical Australasia are a potential source of information about internal variability of the El Nino-Southern Oscillation (ENSO), because they occur in a region where precipitation variability is closely associated with ENSO activity. We measured tree-ring width and oxygen isotopic composition (d18O) of alpha-cellulose from Agathis robusta (Queensland Kauri) samples collected in the Atherton Tablelands, Queensland, Australia. Standard ring-width chronologies yielded low internal consistency due to the frequent presence of false ring-like anatomical features. However, in a detailed examination of the most recent 15 years of growth (1995-2010), we found significant correlation between d18O and local precipitation, the latter associated with ENSO activity. The results are consistent with process-based forward modeling of the oxygen isotopic composition of alpha-cellulose. The d18O record also enabled us to confirm the presence of a false growth ring in one of the three samples in the composite record, and to determine that it occurred as a consequence of anomalously low rainfall in the middle of the 2004/5 rainy season. The combination of incremental growth and isotopic measures may be a powerful approach to development of long-term (150+ year) ENSO reconstructions from the terrestrial tropics of Australasia.","author":{"name":"Bjorn M. M. Boysen, Michael N. Evans, Patrick J. Baker "},"citation":"Bjorn M. M. Boysen, Michael N. Evans, Patrick J. Baker. 2014. d18O in the Tropical Conifer Agathis robusta Records ENSO-Related Precipitation Variations. PLoS ONE, 9(7). doi: 10.1371/journal.pone.0102336","edition":null,"identifier":{"id":"10.1371/journal.pone.0102336","type":"doi","url":"http://dx.doi.org/10.1371/journal.pone.0102336"},"issue":"7","journal":"PLoS ONE","pages":null,"pubRank":"1","pubYear":2014,"reportNumber":null,"title":"d18O in the Tropical Conifer Agathis robusta Records ENSO-Related Precipitation Variations","type":"publication","volume":"9"}],"reconstruction":"N","scienceKeywords":["ENSO"],"site":[{"NOAASiteId":"56302","geo":{"geoType":"Feature","geometry":{"coordinates":["-16.9794","145.6032"],"type":"POINT"},"properties":{"easternmostLongitude":"145.6032","maxElevationMeters":"700","minElevationMeters":"700","northernmostLatitude":"-16.9794","southernmostLatitude":"-16.9794","westernmostLongitude":"145.6032"}},"locationName":"Continent>Australia/New Zealand>Australia>Queensland","mappable":"Y","paleoData":[{"NOAADataTableId":"27479","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/australia/queensland2014tr-iso.txt","linkText":"Queensland Kauri Tree-Ring Oxygen Isotope Data","urlDescription":"Data and Information File","variables":[{"cvAdditionalInfo":"process-based forward modeling; median of 1000 simulations for each year","cvDataType":"PALEOCLIMATIC MODELING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>cellulose>alpha cellulose","cvMethod":"forward model","cvSeasonality":"5-month period>Nov-Mar","cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"sample is approximately Nov-March","cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>cellulose>alpha cellulose","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/australia/BEB14.dat","linkText":"Oxygen Isotope Data File BEB14.dat for MATLAB script","urlDescription":"Space Delimited ASCII Data File","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/australia/data2fig2a.m","linkText":"Matlab script to plot the data ","urlDescription":"Matlab Script","variables":[]}],"dataTableName":"Boysen2014TRiso","dataTableNotes":null,"earliestYear":1995,"earliestYearBP":-45,"earliestYearCE":1995,"mostRecentYear":2010,"mostRecentYearBP":-60,"mostRecentYearCE":2010,"species":[{"commonName":["kauri pine"],"scientificName":"Agathis robusta (C. Moore ex F. Muell) Bailey","speciesCode":"AGRO"}],"timeUnit":"AD"}],"siteName":"Dinden National Park"}],"studyCode":"IITRDB14","studyName":"Northern Queensland 15 Year Kauri Tree-Ring Oxygen Isotope Data","studyNotes":"Tree-ring oxygen isotope data from Agathis robusta (Queensland Kauri) samples collected in Dinden National Park, Queensland, Australia, for 1995-2010 AD. Data are measured for the southern hemisphere November-April growing season.  Also included are datafile BEB14.dat and a matlab script \r\nto plot the data as in Fig 2(a) of Boysen et al. 2014. In the datafile BEB14.dat, data are identifed by the year growth began, i.e. 1995 data correspond to the growing season Nov 1995 - Apr 1996. \r\nIITRDB14","version":"1.0","xmlId":"14953"}