{"NOAAStudyId":"19399","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":"2015-10-27","dataPublisher":"NOAA","dataType":"SPELEOTHEMS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/speleothem","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-cave-19399.xml","doi":null,"earliestYearBP":18332,"earliestYearCE":-16382,"entryId":"noaa-cave-19399","funding":[{"fundingAgency":"National Natural Science Foundation China","fundingGrant":"40972111, 41130210"}],"investigators":"Zhang, W.; Wu, J.; Wang, Y.; Wang, Y.; Cheng, H.; Kong, X.; Duan, F.","mostRecentYearBP":14439,"mostRecentYearCE":-12489,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/19399","originalSource":null,"publication":[{"abstract":"The 'Mystery Interval' (MI, 17.5-14.5 ka) was the first stage of the last deglaciation, a key interval for understanding mechanisms of glacial-interglacial cycles. To elucidate possible causes of the MI, here we present three high-resolution, precisely dated oxygen-isotope records of stalagmites from Qingtian and Hulu Caves in China, reflecting changes in the East Asian summer monsoon (EASM) then. Based on well-established chronologies using precise 230Th dates and annual-band counting results, the two-cave d18O profiles of ~ 7-yr resolution match well at decadal timescales. Both of the two-cave records document an abrupt weakening (2 per mil of d18O rise within 20 yr) in the EASM at ~ 16.1 ka, coinciding with the transition of the two-phased MI reconstructed from New Mexico's Lake Estancia. Our results indicate that the maximum southward displacement of the Intertropical Convergence Zone and associated southward shift of polar jet stream may generate this two-phase feature of the MI during that time. We also discover a linear relationship among decreasing EASM intensity, rising atmospheric CO2 and weakening Atlantic Meridional Overturning Circulation between the MI and Younger Dryas episodes, suggesting a strong coupling of atmospheric/oceanic circulations in response to the millennial-scale forcing, which in turn regulates global climate changes and carbon cycles.","author":{"name":"Weihong Zhang, Jiangying Wu, Yi Wang, Yongjin Wang, Hai Cheng, Xinggong Kong, Fucai Duan"},"citation":"Weihong Zhang, Jiangying Wu, Yi Wang, Yongjin Wang, Hai Cheng, Xinggong Kong, Fucai Duan. 2014. A detailed East Asian monsoon history surrounding the 'Mystery Interval' derived from three Chinese speleothem records. Quaternary Research, 82(1), 154-163. doi: 10.1016/j.yqres.2014.01.010","edition":null,"identifier":{"id":"10.1016/j.yqres.2014.01.010","type":"doi","url":"http://dx.doi.org/10.1016/j.yqres.2014.01.010"},"issue":"1","journal":"Quaternary Research","pages":"154-163","pubRank":"1","pubYear":2014,"reportNumber":null,"title":"A detailed East Asian monsoon history surrounding the 'Mystery Interval' derived from three Chinese speleothem records","type":"publication","volume":"82"}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"6553","geo":{"geoType":"Feature","geometry":{"coordinates":["32.5","119.16"],"type":"POINT"},"properties":{"easternmostLongitude":"119.16","maxElevationMeters":"1630","minElevationMeters":"1630","northernmostLatitude":"32.5","southernmostLatitude":"32.5","westernmostLongitude":"119.16"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"29940","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>carbon isotopes","earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/hulu2014yt.txt","linkText":"Hulu Cave Stalagmite YT d18O and d13C Data","urlDescription":"Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"}]}],"dataTableName":"Hulu2014YT","dataTableNotes":null,"earliestYear":18332,"earliestYearBP":18332,"earliestYearCE":-16382,"mostRecentYear":14439,"mostRecentYearBP":14439,"mostRecentYearCE":-12489,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"29941","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/hulu2014yt16.1.txt","linkText":"Hulu Cave Stalagmite YT Detailed Monsoon Transtion at ~16.1  kyr B.P.","urlDescription":"Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Hulu2014YT16.1","dataTableNotes":null,"earliestYear":16150,"earliestYearBP":16150,"earliestYearCE":-14200,"mostRecentYear":16117,"mostRecentYearBP":16117,"mostRecentYearCE":-14167,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Hulu Cave"},{"NOAASiteId":"56639","geo":{"geoType":"Feature","geometry":{"coordinates":["31.3333","110.3667"],"type":"POINT"},"properties":{"easternmostLongitude":"110.3667","maxElevationMeters":"1630","minElevationMeters":"1630","northernmostLatitude":"31.3333","southernmostLatitude":"31.3333","westernmostLongitude":"110.3667"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"29938","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/qingtian2014qt20.txt","linkText":"Qingtian Cave Stalagmite Qt20 d18O Data","urlDescription":"Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Qingtian2014Qt20","dataTableNotes":null,"earliestYear":17523,"earliestYearBP":17523,"earliestYearCE":-15573,"mostRecentYear":15981,"mostRecentYearBP":15981,"mostRecentYearCE":-14031,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"29939","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/qingtian2014qt29.txt","linkText":"Qingtian Cave Stalagmite Qt29 d18O Data","urlDescription":"Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","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":"SPELEOTHEMS","cvDetail":"raw","cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>identified mineral>carbonate>calcium carbonate","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"Qingtian2014Qt29","dataTableNotes":null,"earliestYear":18216,"earliestYearBP":18216,"earliestYearCE":-16266,"mostRecentYear":17271,"mostRecentYearBP":17271,"mostRecentYearCE":-15321,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Qingtian Cave"}],"studyCode":null,"studyName":"Qingtian and Hulu Caves, China Deglacial Stalagmite Stable Isotope Data","studyNotes":"Oxygen isotope (d18O) data from Qingtian and Hulu Caves, China plus carbon isotope (d13C) data from Hulu Cave, for the 'Mystery Interval' 17.5-14.5 ka.","version":"1.0","xmlId":"17105"}