noaa-lake-20166 Lake Karakuli, China 4,200 Year Leaf Wax Carbon and Hydrogen Isotope Data Aichner, B.; Feakins, S.J.; Lee, J.-E.; Herzschuh, U.; Liu, X. Lake Karakuli, China 4,200 Year Leaf Wax Carbon and Hydrogen Isotope Data 2016-05-19 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20166 Investigator B. Aichner Investigator S.J. Feakins Investigator J.-E. Lee Investigator U. Herzschuh Investigator X. Liu earth science paleoclimate paleolimnology delta 13C,C24 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 13C,C28 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,Unweighted C26 and C-28 n-alkanoic acid averages earth science paleoclimate paleolimnology delta 13C,C26 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 13C,C24 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,C26 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 2H,n-alkanoic acid,unspecified margin of error,per mil,null,paleolimnology,averaged,null,N,C26 and C-28 n-alkanoic acid averages earth science paleoclimate paleolimnology delta 13C,C28 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology delta 13C,C26 n-alkanoic acid,null,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology age,null,null,calendar year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 2H,C24 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,averaged,null,N,null earth science paleoclimate paleolimnology carbon isotopes earth science paleoclimate paleolimnology hydrogen isotopes geoscientificInformation 4149 cal yr BP -22 cal yr BP Complete 38.43968 38.43968 75.05725 75.05725 3650 3650 Continent Asia Eastern Asia China Xinjiang Lake Karakuli>LATITUDE 38.43968>LONGITUDE 75.05725 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 B. Aichner, S.J. Feakins, J.E. Lee, U. Herzschuh, and X. Liu 2015 Climate of the Past 11 4 619-633 10.5194/cp-11-619-2015 http://www.clim-past.net/11/619/2015/

Central Asia is located at the confluence of large-scale atmospheric circulation systems. It is thus likely to be highly susceptible to changes in the dynamics of those systems; however, little is still known about the regional paleoclimate history. Here we present carbon and hydrogen isotopic compositions of n-alkanoic acids from a late Holocene sediment core from Lake Karakuli (eastern Pamir, Xinjiang Province, China). Instrumental evidence and isotope-enabled climate model experiments with the Laboratoire de Meteorologie Dynamique Zoom model version 4 (LMDZ4) demonstrate that dD values of precipitation in the region are influenced by both temperature and precipitation amount. We find that these parameters are inversely correlated on an annual scale, i.e., the climate has varied between relatively cool and wet and more warm and dry over the last 50 years. Since the isotopic signals of these changes are in the same direction and therefore additive, isotopes in precipitation are sensitive recorders of climatic changes in the region. Additionally, we infer that plants use year-round precipitation (including snowmelt), and thus leaf wax dD values must also respond to shifts in the proportion of moisture derived from westerly storms during late winter and early spring. Downcore results give evidence for a gradual shift to cooler and wetter climates between 3.5 and 2.5 cal kyr BP, interrupted by a warm and dry episode between 3.0 and 2.7 kyr BP. Further cool and wet episodes occur between 1.9 and 1.5 and between 0.6 and 0.1 kyr BP, the latter coeval with the Little Ice Age. Warm and dry episodes from 2.5 to 1.9 and 1.5 to 0.6 kyr BP coincide with the Roman Warm Period and Medieval Climate Anomaly, respectively. Finally, we find a drying tend in recent decades. Regional comparisons lead us to infer that the strength and position of the westerlies, and wider northern hemispheric climate dynamics, control climatic shifts in arid Central Asia, leading to complex local responses. Our new archive from Lake Karakuli provides a detailed record of the local signatures of these climate transitions in the eastern Pamir. STUDY NOTES: Sedimentary carbon and hydrogen isotopic data measured on leaf wax biomarkers from Lake Karakuli (also known as Lake Kala Kule) core PG 1950, Muztagh Ata, Kongur Shan, Xinjiang, China, for the past 4,200 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/karakuli2015d13c.txt Data File; Lake Karakuli Leaf Wax Carbon Isotope Data GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/china/karakuli2015d2h.txt Data File; Lake Karakuli Leaf Wax Hydrogen Isotope Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11