noaa-cave-20450 China 640,000 Year Speleothem Oxygen Isotope Data Cheng, H.; Edwards, R.L.; Sinha, A.; Spötl, C.; Yi, L.; Chen, S.; Kelly, M.J.; Kathayat, G.; Wang, X.; Li, X.; Kong, X.; Wang, Y.; Ning, Y.F.; Zhang, H. China 640,000 Year Speleothem Oxygen Isotope Data 2016-08-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20450 Investigator H. Cheng Investigator R.L. Edwards Investigator A. Sinha Investigator C. Spötl Investigator L. Yi Investigator S. Chen Investigator M.J. Kelly Investigator G. Kathayat Investigator X. Wang Investigator X. Li Investigator X. Kong Investigator Y. Wang Investigator Y.F. Ning Investigator H. Zhang earth science paleoclimate speleothems depth,null,null,millimeter,null,speleothems,null,null,N,null earth science paleoclimate speleothems delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,composited,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,composited|detrended|normalized,isotope ratio mass spectrometry,N,null earth science paleoclimate speleothems sample identification,null,null,null,null,speleothems,null,null,N,stalagmite ID earth science paleoclimate speleothems age,null,null,calendar kiloyear before present,null,speleothems,null,null,N,null earth science paleoclimate speleothems oxygen isotopes geoscientificInformation Monsoon 641300 cal yr BP -17 cal yr BP Complete 25.28 32.5 108.08 119.16 680 1900 Continent Asia Eastern Asia China Hulu Cave>LATITUDE 32.5>LONGITUDE 119.16 Continent Asia Eastern Asia China Dongge Cave>LATITUDE 25.28>LONGITUDE 108.08 Continent Asia Eastern Asia China Sanbao Cave>LATITUDE 31.667>LONGITUDE 110.433 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 Hai Cheng, R. Lawrence Edwards, Ashish Sinha, Christoph Spötl, Liang Yi, Shitao Chen, Megan Kelly, Gayatri Kathayat, Xianfeng Wang, Xianglei Li, Xinggong Kong, Yongjin Wang, Youfeng Ning, Haiwei Zhang 2016 Nature 534 7609 640-646 10.1038/nature18591 http://www.nature.com/nature/journal/v534/n7609/full/nature18591.html

Oxygen isotope records from Chinese caves characterize changes in both the Asian monsoon and global climate. Here, using our new speleothem data, we extend the Chinese record to cover the full uranium/thorium dating range, that is, the past 640,000 years. The record's length and temporal precision allow us to test the idea that insolation changes caused by the Earth's precession drove the terminations of each of the last seven ice ages as well as the millennia-long intervals of reduced monsoon rainfall associated with each of the terminations. On the basis of our record's timing, the terminations are separated by four or five precession cycles, supporting the idea that the '100,000-year' ice age cycle is an average of discrete numbers of precession cycles. Furthermore, the suborbital component of monsoon rainfall variability exhibits power in both the precession and obliquity bands, and is nearly in anti-phase with summer boreal insolation. These observations indicate that insolation, in part, sets the pace of the occurrence of millennial-scale events, including those associated with terminations and 'unfinished terminations'. STUDY NOTES: New and previously published stalagmite oxygen isotope (d18O) data from 4 Chinese caves, covering the past 640,000 years

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/cheng2016composite.txt Data File; Composite d18O Data from 4 SE China Caves GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/cheng2016detrend.txt Data File; Detrended Composite d18O Data from 4 SE China Caves GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/cheng2016d18o.txt Data File; New d18O Data from Sanbao and Dongge Caves USA/NOAA DIF Version 9.8.4 2019-05-23 2019-05-23