{"NOAAStudyId":"23950","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":"2018-04-28","dataPublisher":"NOAA","dataType":"CLIMATE RECONSTRUCTIONS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/climate-reconstruction","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-23950.xml","doi":null,"earliestYearBP":130,"earliestYearCE":1820,"entryId":"noaa-recon-23950","funding":[{"fundingAgency":"Ministry of Science and Technology of the People’s Republic of China","fundingGrant":"2016YFA0600404"},{"fundingAgency":"National Natural Science Foundation China","fundingGrant":"41471035, 41571094, 41101043, 41271120, 41771240"}],"investigators":"Li, M.Y.; Duan, J.; Wang, L.; Zhu, H.F.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23950","originalSource":null,"publication":[{"abstract":"Although several tree-ring density-based summer/late summer temperature reconstructions have been developed on the Tibetan Plateau (TP), the understanding of the local/regional characteristics of summer temperature fluctuations on a long-term scale in some regions is still limited. To improve our understanding in these aspects, more local or regional summer temperature reconstructions extending back over several centuries are required. In this study, a new mean latewood density (LWD) chronology from Abies georgei var. smithii from the upper tree line of Sygera Mountain on the southeastern TP was developed to reconstruct the late summer temperature variability since 1820CE. The bootstrapped correlation analysis showed that the LWD chronology index was significantly and positively correlated with the late summer (August-September) mean temperatures (r1950-2008=0.63, p<0.001) recorded at the nearest meteorological station and that this reconstruction has considerable potential to represent the late summer temperature variability at the regional scale. Our late summer temperature reconstruction revealed three obvious cold periods (i.e., 1872-1908, 1913-1937 and 1941-1966) and two relatively warm phases (i.e., 1821-1871 and 1970-2008) over the past two centuries. Comparisons of our reconstruction with other independent tree-ring-based temperature reconstructions, glacier fluctuations and historical documental records from neighboring regions showed good agreement in these relatively cold and warm intervals. Our reconstruction exhibits an overall increasing temperature trend since the 1960s, providing new evidence supporting the recent warming of the TP. Moreover, our results also indicate that the late summer temperature variability of Sygera Mountain on the southeastern TP has potential links with the Pacific Decadal Oscillation (PDO).","author":{"name":"Mingyong Li, Jianping Duan, Lily Wang, Haifeng Zhu"},"citation":"Mingyong Li, Jianping Duan, Lily Wang, Haifeng Zhu. 2018. Late summer temperature reconstruction based on tree-ring density for Sygera Mountain, southeastern Tibetan Plateau. Global and Planetary Change, 163, 10-17. doi: 10.1016/j.gloplacha.2018.02.005","edition":null,"identifier":{"id":"10.1016/j.gloplacha.2018.02.005","type":"doi","url":"http://dx.doi.org/10.1016/j.gloplacha.2018.02.005"},"issue":null,"journal":"Global and Planetary Change","pages":"10-17","pubRank":"1","pubYear":2018,"reportNumber":null,"title":"Late summer temperature reconstruction based on tree-ring density for Sygera Mountain, southeastern Tibetan Plateau","type":"publication","volume":"163"}],"reconstruction":"Y","scienceKeywords":["Air Temperature Reconstruction"],"site":[{"NOAASiteId":"57634","geo":{"geoType":"Feature","geometry":{"coordinates":["29.64","94.71"],"type":"POINT"},"properties":{"easternmostLongitude":"94.71","maxElevationMeters":"4128","minElevationMeters":"4128","northernmostLatitude":"29.64","southernmostLatitude":"29.64","westernmostLongitude":"94.71"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"35737","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>air temperature"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/china/sygera2018temp.txt","linkText":"Sygera Mountain Summer Temperature Reconstruction","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|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":"based on mean latewood density","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring density","cvMethod":null,"cvSeasonality":"2-month period>Aug-Sep","cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature"},{"cvAdditionalInfo":"chronology indices","cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"physical property>density>latewood density"},{"cvAdditionalInfo":"Sample depths for mean latewood density","cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"sampling metadata>number of samples"}]}],"dataTableName":"Sygera2018temp","dataTableNotes":null,"earliestYear":1820,"earliestYearBP":130,"earliestYearCE":1820,"mostRecentYear":2008,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"AD"}],"siteName":"Sygera Mountain"}],"studyCode":null,"studyName":"Sygera Mountain, Tibetan Plateau 189 Year Summer Temperature Reconstruction","studyNotes":"Late summer (August-September) mean temperature reconstruction for the Sygera Mountains region, southeastern Tibetan Plateau, since 1820 CE, based on tree-ring mean latewood density (LWD) chronology.","version":"1.0","xmlId":"22094"}