{"NOAAStudyId":"14129","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":"2013-03-20","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-14129.xml","doi":null,"earliestYearBP":1098,"earliestYearCE":852,"entryId":"noaa-lake-14129","funding":[{"fundingAgency":"US NOAA","fundingGrant":null},{"fundingAgency":"National Science Foundation","fundingGrant":null}],"investigators":"Konecky, B.L.; Russell, J.M.; Rodysill, J.R.; Vuille, M.; Bijaksana, S.; Huang, Y.","mostRecentYearBP":-52,"mostRecentYearCE":2002,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/14129","originalSource":null,"publication":[{"abstract":"Modern precipitation in Indonesia is strongly correlated to variations in the Asian/Australasian monsoons, the Walker circulation, and migrations of the Intertropical Convergence Zone (ITCZ), but controls on multi-decadal to millennial rainfall variations are less clear. We present a new, high-resolution, precipitation proxy reconstruction from Lake Lading (8S, 113E), Java, from 850 C.E. to present, based on the dD of terrestrial plant waxes. We find that rainfall has steadily increased in Java over the past millennium. This increase persists into the 20th century, despite evidence from other tropical proxy records for a northward ITCZ migration during the last two centuries, which should introduce drier conditions to Java. Aspects of this long-term increase in rainfall resemble records from the northern hemisphere, tropical Indo-Pacific, suggesting that strengthening Walker circulation played an important role in this long-term increase in rainfall and decrease in the dD of precipitation, while ITCZ variations may have been important to climate variations on multi-decadal to centennial timescales.","author":null,"citation":"Konecky, B. L., Russell, J. M., Rodysill, J. R., and Vuille, M. (2013). Intensification of southwestern Indonesian rainfall over the past millennium. Geophysical Research Letters, 40. doi:10.1029/2012GL054331","edition":null,"identifier":{"id":"10.1029/2012GL054331","type":"doi","url":"http://dx.doi.org/10.1029/2012GL054331"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Intensification of southwestern Indonesian rainfall over the past millennium.","type":"publication","volume":null},{"abstract":null,"author":null,"citation":"Konecky, B. L., Russell, J. M., Johnson, T. C., Brown, E. T., Berke, M. A., Werne, J. P., and Huang, Y. (2011). Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa. Earth and Planetary Science Letters, 312(3), 318–326.","edition":null,"identifier":{"id":"10.1029/2012GL054331","type":"doi","url":"http://dx.doi.org/10.1029/2012GL054331"},"issue":null,"journal":"Earth and Planetary Science Letters","pages":null,"pubRank":"2","pubYear":2011,"reportNumber":null,"title":"Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa.","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["ENSO","Intertropical Convergence Zone (ITCZ)","precipitation","hydrology"],"site":[{"NOAASiteId":"54669","geo":{"geoType":"Feature","geometry":{"coordinates":["-8.008817","113.312"],"type":"POINT"},"properties":{"easternmostLongitude":"113.312","maxElevationMeters":"324","minElevationMeters":"324","northernmostLatitude":"-8.008817","southernmostLatitude":"-8.008817","westernmostLongitude":"113.312"}},"locationName":"Ocean>Indian Ocean>Indonesia>Jawa Timur","mappable":"Y","paleoData":[{"NOAADataTableId":"23815","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>hydrogen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/lading2013.xls","linkText":"lading2013.xls","urlDescription":"Data","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>paleolimnology>hydrogen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/asia/indonesia/lading2013.txt","linkText":"lading2013.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"centimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"terrestrial leaf wax interpretation","cvDataType":"PALEOLIMNOLOGY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"},{"cvAdditionalInfo":"terrestrial leaf wax interpretation; low-pass filtered","cvDataType":"PALEOLIMNOLOGY","cvDetail":"filtered","cvError":null,"cvFormat":"Numeric","cvMaterial":"biological material>bulk biological material>organic matter","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 2H"}]}],"dataTableName":"Lading","dataTableNotes":null,"earliestYear":852,"earliestYearBP":1098,"earliestYearCE":852,"mostRecentYear":2002,"mostRecentYearBP":-52,"mostRecentYearCE":2002,"species":[],"timeUnit":"AD"}],"siteName":"Lake Lading"}],"studyCode":null,"studyName":"Intensification of southwestern Indonesian rainfall over the past millennium","studyNotes":"Samples for dDwax analysis were taken at an average resolution of 8.5years (ranging approximately 3 to 25years). One hundred seventy sediment samples were freeze-dried, homogenized, and extracted using a Dionex Accelerated Solvent Extractor 350 to yield the soluble lipid fraction. Fatty acids were then purified according to previously described methods [Konecky et al., 2011]. dD was measured on the C28 n-alkanoic acid, the dominant homologue in all samples, using gas chromatography- pyrolysis-isotope ratio-mass spectrometry. Samples were randomized and run in duplicate, except for a subset of 18 samples that were run in triplicate. The pooled standard deviation of triplicate samples was 1.08%, and the 1-s error on a synthetic fatty acid methyl ester standard run between every six replicates was 2.5%. dDwax values are reported relative to Vienna Standard Mean Ocean Water. \nLeaf wax delta-D(C28 n-alkanoic acid) from Lake Lading, East Java, Indonesia.\nADDITIONAL REFERENCE FOR FATTY ACID PURIFICATION:\nKonecky, B. L., Russell, J. M., Johnson, T. C., Brown, E. T., Berke, M. A., Werne, J. P., & Huang, Y. (2011). Atmospheric circulation patterns during late Pleistocene climate changes at Lake Malawi, Africa. Earth and Planetary Science Letters, 312(3), 318–326.","version":"1.0","xmlId":"12109"}