{"NOAAStudyId":"20453","contactInfo":{"address":"325 Broadway, E/NE31","city":"Boulder","constraints":"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.","country":"USA","dataCenterUrl":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data","email":"paleo@noaa.gov","fax":"303-497-6513","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","phone":"303-497-6280","postalCode":"80305-3328","shortName":"DOC/NOAA/NESDIS/NCEI","state":"CO","type":"CONTACT INFORMATION"},"contributionDate":"2016-08-30","dataPublisher":"NOAA","dataType":"PALEOLIMNOLOGY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/lake","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-lake-20453.xml","doi":null,"earliestYearBP":60336,"earliestYearCE":-58386,"entryId":"noaa-lake-20453","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"EAR-0902845, Graduate Research Fellowship Program"}],"investigators":"Konecky, B.L.; Russell, J.M.; Bijaksana, S.","mostRecentYearBP":630,"mostRecentYearCE":1320,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/20453","originalSource":null,"publication":[{"abstract":"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","author":{"name":"Bronwen Konecky, James Russell, Satria Bijaksana"},"citation":"Bronwen Konecky, James Russell, Satria Bijaksana. 2016. Glacial aridity in central Indonesia coeval with intensified monsoon circulation. Earth and Planetary Science Letters, 437, 15-24. doi: 10.1016/j.epsl.2015.12.037","edition":null,"identifier":{"id":"10.1016/j.epsl.2015.12.037","type":"doi","url":"http://dx.doi.org/10.1016/j.epsl.2015.12.037"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":"15-24","pubRank":"1","pubYear":2016,"reportNumber":null,"title":"Glacial aridity in central Indonesia coeval with intensified monsoon circulation","type":"publication","volume":"437"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"55827","geo":{"geoType":"Feature","geometry":{"coordinates":["-2.732836","121.515956"],"type":"POINT"},"properties":{"easternmostLongitude":"121.515956","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-2.732836","southernmostLatitude":"-2.732836","westernmostLongitude":"121.515956"}},"locationName":"Ocean>Indian Ocean>Indonesia","mappable":"Y","paleoData":[{"NOAADataTableId":"31158","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>hydrogen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/pacific/towuti2016dd.txt","linkText":"Lake Towuti Leaf Wax and Precipitation Hydrogen Isotope Data ","urlDescription":"Data File","variables":[{"cvAdditionalInfo":"corrected for the influence of changing vegetation on dDwax [Fig. 6]; based on C28 n-alkanoic acid","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>precipitation","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"},{"cvAdditionalInfo":"cm below lake floor","cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>fatty acid>n-alkanoic acid>C28 n-alkanoic acid","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"},{"cvAdditionalInfo":"analytical error on each sample (standard deviation if 3+ replicates were measured - otherwise difference between 2 replicates)","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>fatty acid>n-alkanoic acid>C28 n-alkanoic acid","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"},{"cvAdditionalInfo":"corrected for ice volune","cvDataType":"PALEOLIMNOLOGY","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>fatty acid>n-alkanoic acid>C28 n-alkanoic acid","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"}]}],"dataTableName":"Towuti2016dD","dataTableNotes":null,"earliestYear":60336,"earliestYearBP":60336,"earliestYearCE":-58386,"mostRecentYear":630,"mostRecentYearBP":630,"mostRecentYearCE":1320,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Lake Towuti"}],"studyCode":null,"studyName":"Lake Towuti, Indonesia 60,000 Year Leaf Wax Hydrogen Isotope Data","studyNotes":"Leaf wax hydrogen isotope (dD) data and reconstructed precipitation dD from sediments collected in Lake Towuti, Sulwesi, Indonesia, for the past 60,000 years.","version":"1.0","xmlId":"18261"}