noaa-lake-20368 Nir'pa Co, Tibet 3,300 Year Geochemical and Physical Properties Data Bird, B.W.; Lei, Y.; Perello, M.; Polissar, P.J.; Yao, T.; Finney, B.P.; Bain, D.J.; Pompeani, D.P.; Thompson, L.G. Nir'pa Co, Tibet 3,300 Year Geochemical and Physical Properties Data 2016-10-18 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20368 Investigator B.W. Bird Investigator Y. Lei Investigator M. Perello Investigator P.J. Polissar Investigator T. Yao Investigator B.P. Finney Investigator D.J. Bain Investigator D.P. Pompeani Investigator L.G. Thompson earth science paleoclimate paleolimnology zinc,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology manganese,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology nickel,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology arsenic,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology rhenium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-5 units; Core A-11 earth science paleoclimate paleolimnology volume magnetic susceptibility,sediment,null,dimensionless (SI system),null,paleolimnology,null,null,N,x10-5 units; Core A-15 earth science paleoclimate paleolimnology clay,sediment,null,percent,null,paleolimnology,null,laser particle size analysis,N,null earth science paleoclimate paleolimnology aluminum,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology argon,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology iron,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology iridium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,organic matter,null,per mil VPDB,null,paleolimnology,null,continuous-flow isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology organic matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate paleolimnology sand,sediment,null,percent,null,paleolimnology,null,laser particle size analysis,N,null earth science paleoclimate paleolimnology yttrium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology cesium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology barium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology gallium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology selenium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology tungsten,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology delta 15N,organic matter,null,per mil AIR,null,paleolimnology,null,continuous-flow isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology chlorine,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology calcium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology vanadium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology polonium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology silt,sediment,null,percent,null,paleolimnology,null,laser particle size analysis,N,null earth science paleoclimate paleolimnology phosphorus,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology potassium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology germanium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology rubidium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology strontium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology mercury,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology thallium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology biogenic silica,sediment,null,weight percent,null,paleolimnology,null,spectrophotometry,N,Weight % (2.4 x Si) earth science paleoclimate paleolimnology nitrogen,sediment,null,weight percent,null,paleolimnology,null,elemental analysis,N,null earth science paleoclimate paleolimnology carbon/nitrogen,sediment,null,dimensionless,null,paleolimnology,null,elemental analysis,N,total organic carbon/total nitrogen earth science paleoclimate paleolimnology density,dry sediment,null,gram per cubic centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology titanium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology chromium,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology cobalt,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology tantalum,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology platinum,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology bismuth,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology copper,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology organic carbon,sediment,null,weight percent,null,paleolimnology,null,elemental analysis,N,null earth science paleoclimate paleolimnology mineral matter,sediment,null,weight percent,null,paleolimnology,null,loss on ignition,N,null earth science paleoclimate paleolimnology silicon,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology sulfur,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology gold,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology lead,sediment,null,count per second,null,paleolimnology,null,x-ray fluorescence spectroscopy,N,null earth science paleoclimate paleolimnology magnetic susceptibility earth science paleoclimate paleolimnology physical properties earth science paleoclimate paleolimnology geochemistry geoscientificInformation Monsoon 3338 cal yr BP -49 cal yr BP Complete 29.734 29.734 92.386 92.386 4775 4775 Continent Asia Eastern Asia China Nir'pa Co>LATITUDE 29.734>LONGITUDE 92.386 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

325 Broadway, E/NE31

Boulder CO 80305-3328 USA online ASCII Broxton W. Bird, Yanbin Lei, Melanie Perello, Pratigya J. Polissar, Tandong Yao, Bruce Finney, Daniel Bain, David Pompeani and Lonnie G. Thompson 2016 The Holocene 10.1177/0959683616670220 http://hol.sagepub.com/content/early/2016/09/27/0959683616670220.abstract

Sedimentological and geochemical results from Nir'pa Co, an alpine lake on the southeastern Tibetan Plateau, detail late-Holocene Indian summer monsoon (ISM) hydroclimate during the last 3300 years. Constrained by modern calibration, elevated silt and lithics and low sand and clay between 3.3 and 2.4 ka and 1.3 ka and the present indicate two pluvial phases with lake levels near their current overflow elevation. Between 2.4 and 1.3 ka, a sharp increase in sand and corresponding decrease in lithics and silt suggest drier conditions and lower lake levels at Nir'pa Co. Hydroclimate expressions in the sedimentological proxies during the Medieval Climate Anomaly (MCA) and 'Little Ice Age’ (LIA) are not statistically significant, suggesting that these events were minor compared to the millennial scale variability on which they were superimposed. However, decreasing sand and increasing lithics and silt during the MCA between 950 and 800 cal. yr BP may suggest briefly wetter conditions, while increasing sand and reduced lithics and silt from 500 to 200 cal. yr BP suggest potentially drier conditions during the LIA. Similarities with regional records from lake sediment and ice cores and speleothem records from the central and eastern Tibetan Plateau, India, and the Arabian Sea, suggest generally coherent late-Holocene ISM variability in these regions. Increased late-Holocene ISM intensity occurred during times when Tibetan Plateau surface air temperatures were warmer, Indo-Pacific sea surface temperatures were elevated, and the tropical Pacific was in a La Niña-like mean state. Conversely, aridity between 2.4 and 1.3 ka occurred in concert with cooling on the Tibetan Plateau and in the Indo-Pacific with more El Niño-like conditions in the tropical Pacific. Differences with western Tibetan records may reflect a weakened ISM and stronger westerlies in this region during the late-Holocene. STUDY NOTES: Sediment geochemical and physical properties data from two cores collected in Nir'pa Co, Tibet for the past 3,300 years. Measured parameters include: Dry bulk density, Total organic matter, Biogenic Opal, C-N, d13C, d15N, clay/silt/sand, Magnetic susceptibility, and XRF mineralogy.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017gs.txt Data File; Nir'pa Co Sand/Silt/Clay Percentages Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017dbd.txt Data File; Nir'pa Co Dry Bulk Density and Organic Matter Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017opal.txt Data File; Nir'pa Co Biogenic Opal Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017xrf.txt Data File; Nir'pa Co XRF Mineralogy Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017ms-a11.txt Data File; Nir'pa Co Magnetic Susceptibility Data, Core A-11 GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017ms-a15.txt Data File; Nir'pa Co Magnetic Susceptibility Data, Core A-15 GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/tibet/nirpaco2017cn.txt Data File; Nir'pa Co Carbon and Nitrogen Isotopes and Concentration Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11