noaa-lake-20453 Lake Towuti, Indonesia 60,000 Year Leaf Wax Hydrogen Isotope Data Konecky, B.L.; Russell, J.M.; Bijaksana, S. Lake Towuti, Indonesia 60,000 Year Leaf Wax Hydrogen Isotope Data 2016-08-30 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/20453 Investigator B.L. Konecky Investigator J.M. Russell Investigator S. Bijaksana earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,one standard deviation,per mil,null,paleolimnology,null,null,N,analytical error on each sample (standard deviation if 3+ replicates were measured - otherwise difference between 2 replicates) earth science paleoclimate climate reconstructions|paleolimnology age,null,null,calendar year before present,null,climate reconstructions|paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,null,null,N,null earth science paleoclimate climate reconstructions|paleolimnology delta 2H,precipitation,null,per mil VSMOW,null,climate reconstructions|paleolimnology,corrected,null,N,corrected for the influence of changing vegetation on dDwax [Fig. 6]; based on C28 n-alkanoic acid earth science paleoclimate climate reconstructions|paleolimnology depth,null,null,centimeter,null,climate reconstructions|paleolimnology,null,null,N,cm below lake floor earth science paleoclimate paleolimnology delta 2H,C28 n-alkanoic acid,null,per mil VSMOW,null,paleolimnology,corrected,null,N,corrected for ice volune earth science paleoclimate paleolimnology hydrogen isotopes geoscientificInformation 60336 cal yr BP 630 cal yr BP Complete -2.732836 -2.732836 121.515956 121.515956 Ocean Indian Ocean Indonesia Lake Towuti>LATITUDE -2.732836>LONGITUDE 121.515956 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 Bronwen Konecky, James Russell, Satria Bijaksana 2016 Earth and Planetary Science Letters 437 15-24 10.1016/j.epsl.2015.12.037 http://www.sciencedirect.com/science/article/pii/S0012821X15008006

The Last Glacial Maximum was cool and dry over the Indo-Pacific Warm Pool (IPWP), a key region driving global oceanic-atmospheric circulation. Both low- and high-latitude teleconnections with insolation, ice sheets, and sea level have been suggested to explain the pervasive aridity observed in paleoecological and geomorphic data. However, proxies tracking the H- and O-isotopic composition of rainfall (e.g., speleothems, sedimentary biomarkers) suggest muted aridity or even wetter conditions than the present, complicating interpretations of glacial IPWP climate. Here we use multiproxy reconstructions from lake sediments and modern rainfall isotopic measurements from central Indonesia to show that, contrary to the classical "amount effect," intensified Australian-Indonesian monsoon circulation drove lighter H- and O-isotopic composition of IPWP rainfall during the LGM, while at the same time, dry conditions prevailed. Precipitation isotopes are particularly sensitive to the apparent increase in monsoon circulation and perhaps also decreased moisture residence time implied by our data, explaining contrasts among proxy records while illuminating glacial IPWP atmospheric circulation, a key target for climate models STUDY NOTES: Leaf wax hydrogen isotope (dD) data and reconstructed precipitation dD from sediments collected in Lake Towuti, Sulwesi, Indonesia, for the past 60,000 years.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/pacific/towuti2016dd.txt Data File; Lake Towuti Leaf Wax and Precipitation Hydrogen Isotope Data USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11