{"xmlId":"70731","NOAAStudyId":"28832","studyName":"Central Japan 2,600 Year Composite Tree-Ring Oxygen Isotope Data","doi":"https://doi.org/10.25921/crxm-hs43","uuid":"4b3f0baa-f2ce-417d-93e9-f2097292bcdf","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"TREE RING","investigators":"Nakatsuka, T.; Sano, M.; Li, Z.; Xu, C.; Tsushima, A.; Shigeoka, Y.; Sho, K.; Ohnishi, K.; Sakamoto, M.; Ozaki, H.; Higami, N.; Nakao, N.; Yokoyama, M.; Mitsutani, T.","investigatorDetails":[{"firstName":"Takeshi","lastName":"Nakatsuka","initials":"T.","orcId":null},{"firstName":"Masaki","lastName":"Sano","initials":"M.","orcId":"0000-0003-3391-9067"},{"firstName":"Zhen","lastName":"Li","initials":"Z.","orcId":null},{"firstName":"Chenxi","lastName":"Xu","initials":"C.","orcId":"0000-0001-7747-0033"},{"firstName":"Alkane","lastName":"Tsushima","initials":"A.","orcId":null},{"firstName":"Yuki","lastName":"Shigeoka","initials":"Y.","orcId":null},{"firstName":"Kenjiro","lastName":"Sho","initials":"K.","orcId":null},{"firstName":"Keiko","lastName":"Ohnishi","initials":"K.","orcId":null},{"firstName":"Minoru","lastName":"Sakamoto","initials":"M.","orcId":null},{"firstName":"Hiromasa","lastName":"Ozaki","initials":"H.","orcId":null},{"firstName":"Noboru","lastName":"Higami","initials":"N.","orcId":null},{"firstName":"Nanae","lastName":"Nakao","initials":"N.","orcId":null},{"firstName":"Misao","lastName":"Yokoyama","initials":"M.","orcId":null},{"firstName":"Takumi","lastName":"Mitsutani","initials":"T.","orcId":null}],"version":"1.0","funding":[{"fundingAgency":"Japan Research Institute for Humanity and Nature","fundingGrant":"14200077"},{"fundingAgency":"Japan Society for the Promotion of Science (JSPS)","fundingGrant":"23242047, 26244049, 17H06118"}],"studyNotes":"Central Japan (Nara, Shiga, Aichi, Gifu, Nagano, and Yamanashi Prefectures) composite (67 samples) tree-ring cellulose d18O data for 612 BCE-2005 CE.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/28832","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-28832.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-tree-28832.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/tree-ring","studyCode":null,"scienceKeywords":["Japanese umbrella pine","cryptomeria","Formosan cypress","Chamaecyparis obtusa (Sieb. & Zucc.) Endl.","Chamaecyparis pisifera Sieb. & Zucc.","Sciadopitys verticillata (Thunb.) Sieb. & Zucc.","SCVE","hinoki cypress","sawara cypress","CMJA","Cryptomeria japonica (Thunb. ex L.f.) D. Don","CHPI","koyamaki pine","Japanese cedar","sugi","CHOB"],"reconstruction":"N","contributionDate":"2020-02-05","entryId":"noaa-tree-28832","earliestYearBP":2562,"mostRecentYearBP":-55,"earliestYearCE":-612,"mostRecentYearCE":2005,"publication":[{"author":{"name":"Takeshi Nakatsuka, Masaki Sano, Zhen Li, Chenxi Xu, Akane Tsushima, Yuki Shigeoka, Kenjiro Sho, Keiko Ohnishi, Minoru Sakamoto, Hiromasa Ozaki, Noboru Higami, Nanae Nakao, Misao Yokoyama, Takumi Mitsutani"},"pubYear":2020,"title":"A 2600-year summer climate reconstruction in central Japan by integrating tree-ring stable oxygen and hydrogen isotopes","journal":"Climate of the Past","volume":"16","edition":null,"issue":"6","pages":"21532172","reportNumber":null,"citation":"Takeshi Nakatsuka, Masaki Sano, Zhen Li, Chenxi Xu, Akane Tsushima, Yuki Shigeoka, Kenjiro Sho, Keiko Ohnishi, Minoru Sakamoto, Hiromasa Ozaki, Noboru Higami, Nanae Nakao, Misao Yokoyama, Takumi Mitsutani. 2020. A 2600-year summer climate reconstruction in central Japan by integrating tree-ring stable oxygen and hydrogen isotopes. Climate of the Past, 16(6), 21532172. doi: 10.5194/cp-16-2153-2020","type":"publication","identifier":{"type":"doi","id":"10.5194/cp-16-2153-2020","url":"http://dx.doi.org/10.5194/cp-16-2153-2020"},"abstract":"Oxygen isotope ratios (d18O) of tree-ring cellulose are a novel proxy for summer hydroclimate in monsoonal Asia. In central Japan, we collected 67 conifer wood samples, mainly Chamaecyparis obtusa, with ages encompassing the past 2600 years. The samples were taken from living trees, archeological wood, architectural wood, and buried logs. We analyzed stable isotope ratios of oxygen (d18O) and hydrogen (d2H) in tree-ring cellulose in these samples (more than 15 000 rings in total) without using a pooling method and constructed a statistically reliable tree-ring cellulose d18O time series for the past 2500 years. However, there were distinct age trends and level offsets in the d18O record, and cellulose d18O values showed a gradual decrease as an individual tree matures. This suggested it is difficult to establish a cellulose d18O chronology for low-frequency signals by simple averaging of all the d18O time series data. In addition, there were opposite age trends in the cellulose d2H, and d2H gradually increased with tree age. There were clear positive correlations in the short-periodicity variations between d18O and d2H, probably indicating a common climate signal. A comparison of the d18O and d2H time series in individual trees with tree-ring width suggested that the opposite age trends of d18O and d2H are caused by temporal changes in the degree of post-photosynthetic isotope exchange with xylem water (physiological effect), accompanied by changes in stem growth rate that are influenced by human activity in the forests of central Japan. Based on the assumptions that cellulose d18O and d2H vary positively and negatively with constant proportional coefficients due to climatological and physiological effects, respectively, we solved simultaneous equations for the climatological and physiological components of variations in tree-ring cellulose d18O and d2H in order to remove the age trend. This enabled us to evaluate the climatic record from cellulose d18O variations. The extracted climatological component in the cellulose d18O for the past 2600 years in central Japan was well correlated with numerous instrumental, historical, and paleoclimatological records of past summer climate at various spatial and temporal scales. This indicates that integration of tree-ring cellulose d18O and d2H data is a promising method to reconstruct past summer climate variations on annual to millennial timescales, irrespective of the growth environment. However, analytical and statistical methods need to be improved for further development of this climate proxy.","pubRank":"1"}],"site":[{"NOAASiteId":"58246","siteName":"Central Japan","siteCode":null,"mappable":"N","locationName":"Continent>Asia>Eastern Asia>Japan","geo":{"geoType":"Feature","geometry":{"type":"POLYGON","coordinates":["34.6167","35.8167","135.7333","138.45"]},"properties":{"southernmostLatitude":"34.6167","northernmostLatitude":"35.8167","westernmostLongitude":"135.7333","easternmostLongitude":"138.45","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"Japan2020d18O","NOAADataTableId":"41181","earliestYear":-612,"mostRecentYear":2005,"timeUnit":"CE","earliestYearBP":2562,"mostRecentYearBP":-55,"earliestYearCE":-612,"mostRecentYearCE":2005,"coreLengthMeters":null,"dataTableNotes":null,"species":[{"speciesCode":"CHOB","scientificName":"Chamaecyparis obtusa (Sieb. & Zucc.) Endl.","resourceId":null,"commonName":["hinoki cypress","Formosan cypress"]},{"speciesCode":"CHPI","scientificName":"Chamaecyparis pisifera Sieb. & Zucc.","resourceId":null,"commonName":["sawara cypress"]},{"speciesCode":"CMJA","scientificName":"Cryptomeria japonica (Thunb. ex L.f.) D. Don","resourceId":null,"commonName":["Japanese cedar","sugi","cryptomeria"]},{"speciesCode":"SCVE","scientificName":"Sciadopitys verticillata (Thunb.) Sieb. & Zucc.","resourceId":null,"commonName":["Japanese umbrella pine","koyamaki pine"]}],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/treering/isotope/asia/japan/japan2020d18o-noaa.txt","urlDescription":"NOAA Template File","linkText":"Central Japan Composite Tree-Ring d18O Data","variables":[{"cvDataType":"TREE RING","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":"age_CE"},{"cvDataType":"TREE RING","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>carbohydrate>cellulose","cvError":null,"cvUnit":"concentration unit>parts per notation unit>parts per thousand>per mil","cvSeasonality":null,"cvDetail":"anomalized","cvMethod":"laboratory method>spectroscopy>mass spectrometry>isotope ratio mass spectrometry","cvAdditionalInfo":"anomaly from 1961-1990 mean","cvFormat":"Numeric","cvShortName":"d18O"}],"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}