noaa-recon-23950 Sygera Mountain, Tibetan Plateau 189 Year Summer Temperature Reconstruction Li, M.Y.; Duan, J.; Wang, L.; Zhu, H.F. Sygera Mountain, Tibetan Plateau 189 Year Summer Temperature Reconstruction 2018-04-28 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/23950 Investigator M.Y. Li Investigator J. Duan Investigator L. Wang Investigator H.F. Zhu earth science paleoclimate climate reconstructions|tree ring age,null,null,year Common Era,null,climate reconstructions|tree ring,null,null,N,null earth science paleoclimate tree ring latewood density,null,null,dimensionless,null,tree ring,null,null,N,chronology indices earth science paleoclimate climate reconstructions|tree ring temperature,ring density,null,degree Celsius,Aug-Sep,climate reconstructions|tree ring,null,null,N,based on mean latewood density earth science paleoclimate tree ring number of samples,null,null,count,null,tree ring,null,null,N,Sample depths for mean latewood density earth science paleoclimate reconstructions air temperature geoscientificInformation Air Temperature Reconstruction 1820 AD 2008 AD 130 cal yr BP -58 cal yr BP Complete 29.64 29.64 94.71 94.71 4128 4128 Continent Asia Eastern Asia China Sygera Mountain>LATITUDE 29.64>LONGITUDE 94.71 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Mingyong Li, Jianping Duan, Lily Wang, Haifeng Zhu 2018 Global and Planetary Change 163 10-17 10.1016/j.gloplacha.2018.02.005 https://www.sciencedirect.com/science/article/pii/S0921818117303235

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). STUDY NOTES: 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.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/asia/china/sygera2018temp.txt NOAA Template File; Sygera Mountain Summer Temperature Reconstruction USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11