{"NOAAStudyId":"9910","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":"2010-12-16","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-9910.xml","doi":"https://doi.org/10.25921/p9f9-ck54","earliestYearBP":130,"earliestYearCE":1820,"entryId":"noaa-tree-9910","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":null}],"investigators":"Ballantyne, A.; Baker, P.A.; Chambers, J.Q.; Villalba, R.; Argollo, J.","mostRecentYearBP":-54,"mostRecentYearCE":2004,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/9910","originalSource":null,"publication":[{"abstract":"We present results on the relationship between tree ring proxies \nand regional precipitation for several sites in tropical South \nAmerica. The responsiveness of oxygen isotopes (d18O) and seasonal \ngrowth as precipitation proxies was first validated by high- \nresolution sampling of a Tachigali myrmecophila from Manaus, \nBrazil (3.1ºS, 60.0ºW).  Monthly growth of Tachigali spp. was \nsignificantly correlated with monthly precipitation. Intra-annual \nmeasurements of cellulose d18O in Tachigali spp. were also \nsignificantly correlated with monthly precipitation at a lag of \napproximately one month. The annual ring-widths of two tropical \ntree taxa, Cedrela odorata growing in the Amazon (12.6ºS, 69.2ºW) \nand Polylepis tarapacana growing in the Altiplano (22.0ºS, 66.0ºW), \nwere validated using bomb-derived radiocarbon 14C. Estimated dates \nwere within two to three years of bomb inferred 14C dates, \nindicating that these species exhibit annual rings but uncertainties \nin our chronologies remain. A multi-proxy record spanning 180 years \nfrom Cedrela spp. showed a significant negative relationship between \ncellulose d18O and January precipitation. A 150-year record obtained \nfrom Polylepis spp. also showed a significant negative relationship \nbetween d18O and March precipitation, whereas annual ring width \nshowed a significant positive correlation with December precipitation. \nThese proxies were combined in a multivariate framework to reconstruct \npast precipitation, revealing a significant increase in monsoon \nprecipitation at the Amazon site since 1890 and a significant decrease \nin monsoon precipitation at the Altiplano since 1880.  Proxy time \nseries also showed spatial and temporal coherence with precipitation \nvariability due to El Niño forcing, suggesting that oxygen isotopes \nand ring widths in tropical trees may be important diagnostics for \nidentifying regional differences in the response of the tropical \nhydrologic cycle to anthropogenic warming. \n","author":null,"citation":"Ballantyne, A.P., P.A. Baker, J.Q. Chambers, R. Villalba, \nand J. Argollo. 2011. \nRegional differences in South American monsoon precipitation \ninferred from the growth and isotopic composition of tropical trees. \nEarth Interactions.  doi: 10.1175/2010EI277.1 \n","edition":null,"identifier":{"id":"10.1175/2010EI277.1 ","type":"doi","url":"http://dx.doi.org/10.1175/2010EI277.1 "},"issue":null,"journal":"Earth Interactions","pages":null,"pubRank":"1","pubYear":2010,"reportNumber":null,"title":"Regional differences in South American monsoon precipitation  inferred from the growth and isotopic composition of tropical trees","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["PAGES LOTRED SA2k","drought","PAGES 2k Network","Tropics","Monsoon"],"site":[{"NOAASiteId":"31526","geo":{"geoType":"Feature","geometry":{"coordinates":["-12.6","-69.2"],"type":"POINT"},"properties":{"easternmostLongitude":"-69.2","maxElevationMeters":"265","minElevationMeters":"265","northernmostLatitude":"-12.6","southernmostLatitude":"-12.6","westernmostLongitude":"-69.2"}},"locationName":"Continent>South America>Peru","mappable":"Y","paleoData":[{"NOAADataTableId":"18757","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>carbon isotopes","earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/ballantyne2011tr-iso.txt","linkText":"ballantyne2011tr-iso.txt","urlDescription":"Data","variables":[{"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":null,"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 SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"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 PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes","earth science>paleoclimate>tree-ring>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/ballantyne2011tr-iso.xls","linkText":"ballantyne2011tr-iso.xls","urlDescription":"Data","variables":[]}],"dataTableName":"CEOD2004","dataTableNotes":"Cedrela odorata collected 2004. \r\nAge Model error: +/- 2.4 years based on 14C measurements\r\n \r\n","earliestYear":1820,"earliestYearBP":130,"earliestYearCE":1820,"mostRecentYear":2004,"mostRecentYearBP":-54,"mostRecentYearCE":2004,"species":[],"timeUnit":"AD"}],"siteName":"Puerto Maldonado"},{"NOAASiteId":"31527","geo":{"geoType":"Feature","geometry":{"coordinates":["-22","-66"],"type":"POINT"},"properties":{"easternmostLongitude":"-66","maxElevationMeters":"3500","minElevationMeters":"3500","northernmostLatitude":"-22","southernmostLatitude":"-22","westernmostLongitude":"-66"}},"locationName":"Continent>South America>Argentina","mappable":"Y","paleoData":[{"NOAADataTableId":"18758","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/ballantyne2011tr-iso.txt","linkText":"ballantyne2011tr-iso.txt","urlDescription":"Data","variables":[{"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":null,"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 SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"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 PDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/southamerica/ballantyne2011tr-iso.xls","linkText":"ballantyne2011tr-iso.xls","urlDescription":"Data","variables":[]}],"dataTableName":"POTA1998","dataTableNotes":"Species: Polylepis tarapacana\r\nYear Collected: 1998\r\nAge Model error: +/- 2.0 years based on 14C measurements\r\nraw isotopic data analyzed from cellulose\r\nextracted from two radii for oxygen isotopes\r\n","earliestYear":1877,"earliestYearBP":73,"earliestYearCE":1877,"mostRecentYear":1998,"mostRecentYearBP":-48,"mostRecentYearCE":1998,"species":[],"timeUnit":"AD"}],"siteName":"Volcan Granada"}],"studyCode":"IITRDB006","studyName":"South America 180 Year Tree Ring Stable Isotope Data","studyNotes":"Tree ring isotope data from two South American locations and species, \r\nCedrela odorata from the upper Amazon Basin and Polylepis tarapacana \r\nfrom the Altiplano.  The isotope data correlate with seasonal \r\nprecipitation and provide a monsoon strength signal for the Amazon \r\nand Altiplano for the past 180 years. \r\nIITRDB006","version":"1.0","xmlId":"8804"}