{"NOAAStudyId":"26510","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":"2019-03-29","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-26510.xml","doi":null,"earliestYearBP":11630,"earliestYearCE":-9680,"entryId":"noaa-cave-26510","funding":[],"investigators":"Yang, X.-L.; Yang, H.; Wang, B.; Huang, L.-J.; Shen, C.-C.; Edwards, R.L.; Cheng, H.","mostRecentYearBP":20,"mostRecentYearCE":1930,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/26510","originalSource":null,"publication":[{"abstract":"The timing and duration of the Holocene East Asian summer monsoon (EASM) maximum and the interpretation of Chinese stalagmite d18O records have long been disputed. Notably, interpretations of Holocene EASM variations are frequently based on a single record or study area and are often contradictory. In this study, we conducted stable isotope analyses of four Holocene stalagmites from Chongqing, southwest China. The results reveal differences in the timing of the Holocene EASM maximum and to try to resolve the inconsistency we analyzed and statistically integrated a total of 16 Holocene stalagmite records from 14 caves in the EASM region. The resulting synthesized Holocene stalagmite d18O (d18Osyn) record is in agreement with other EASM records and confirms that stalagmite d18O records are a valid indicator of EASM intensity, rather of local precipitation amount. The d18Osyn record shows that the EASM intensified rapidly from the onset of the early Holocene; notably, however, there were distinct EASM oscillations in the early Holocene, consisting of three abrupt millennial-scale events. This indicates that, contrary to several previous interpretations, the early Holocene EASM was unstable. Subsequently, during 8-6 kyr BP, the EASM was relatively stable and strong, with the strongest monsoon occurring during 8-7 kyr BP. This evidence of a stable and strong mid-Holocene EASM in eastern China is in accord with the classical view of a mid-Holocene Optimum in China.","author":{"name":"Xunlin Yang, Hong Yang, Baoyan Wang, Li-Jung Huang, Chuan-Chou Shen, R. Lawrence Edwards, Hai Cheng"},"citation":"Xunlin Yang, Hong Yang, Baoyan Wang, Li-Jung Huang, Chuan-Chou Shen, R. Lawrence Edwards, Hai Cheng. 2019. Early-Holocene monsoon instability and climatic optimum recorded by Chinese stalagmites. The Holocene. . doi: 10.1177/0959683619831433","edition":null,"identifier":{"id":"10.1177/0959683619831433","type":"doi","url":"http://dx.doi.org/10.1177/0959683619831433"},"issue":null,"journal":"The Holocene","pages":null,"pubRank":"1","pubYear":2019,"reportNumber":null,"title":"Early-Holocene monsoon instability and climatic optimum recorded by Chinese stalagmites","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"57851","geo":{"geoType":"Feature","geometry":{"coordinates":["29","29.7","106.3","107.2"],"type":"POLYGON"},"properties":{"easternmostLongitude":"107.2","maxElevationMeters":"2132","minElevationMeters":"401","northernmostLatitude":"29.7","southernmostLatitude":"29","westernmostLongitude":"106.3"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"N","paleoData":[{"NOAADataTableId":"38893","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/chongqing2019d18o.txt","linkText":"Chongqing Stacked d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Chongqing Composite","dataTableNotes":null,"earliestYear":11600,"earliestYearBP":11600,"earliestYearCE":-9650,"mostRecentYear":50,"mostRecentYearBP":50,"mostRecentYearCE":1900,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Chongqing"},{"NOAASiteId":"57852","geo":{"geoType":"Feature","geometry":{"coordinates":["29.0167","107.1792"],"type":"POINT"},"properties":{"easternmostLongitude":"107.1792","maxElevationMeters":"2132","minElevationMeters":"2132","northernmostLatitude":"29.0167","southernmostLatitude":"29.0167","westernmostLongitude":"107.1792"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"38894","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/heifeng2019hf01d18o.txt","linkText":"Heifeng Cave Stalagmite HF01 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Heifeng2019HF01d18O","dataTableNotes":null,"earliestYear":11490,"earliestYearBP":11490,"earliestYearCE":-9540,"mostRecentYear":480,"mostRecentYearBP":480,"mostRecentYearCE":1470,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Heifeng Cave"},{"NOAASiteId":"57853","geo":{"geoType":"Feature","geometry":{"coordinates":["29.0167","107.1792"],"type":"POINT"},"properties":{"easternmostLongitude":"107.1792","maxElevationMeters":"2114","minElevationMeters":"2114","northernmostLatitude":"29.0167","southernmostLatitude":"29.0167","westernmostLongitude":"107.1792"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"38895","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j12d18o.txt","linkText":"Jinfo Cave Stalagmite J12 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Jinfo2019J12d18O","dataTableNotes":null,"earliestYear":11630,"earliestYearBP":11630,"earliestYearCE":-9680,"mostRecentYear":970,"mostRecentYearBP":970,"mostRecentYearCE":980,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"38896","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/jinfo2019j13d18o.txt","linkText":"Jinfo Cave Stalagmite J13 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Jinfo2019J13d18O","dataTableNotes":null,"earliestYear":10500,"earliestYearBP":10500,"earliestYearCE":-8550,"mostRecentYear":260,"mostRecentYearBP":260,"mostRecentYearCE":1690,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Jinfo Cave"},{"NOAASiteId":"57854","geo":{"geoType":"Feature","geometry":{"coordinates":["29.6822","106.2881"],"type":"POINT"},"properties":{"easternmostLongitude":"106.2881","maxElevationMeters":"401","minElevationMeters":"401","northernmostLatitude":"29.6822","southernmostLatitude":"29.6822","westernmostLongitude":"106.2881"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"N","paleoData":[{"NOAADataTableId":"38897","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/shizi2019qm09d18o.txt","linkText":"Shizi Cave Stalagmite QM09 d18O Data","urlDescription":"NOAA Template File","variables":[]}],"dataTableName":"Shizi2019d18O","dataTableNotes":null,"earliestYear":9270,"earliestYearBP":9270,"earliestYearCE":-7320,"mostRecentYear":20,"mostRecentYearBP":20,"mostRecentYearCE":1930,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Shizi Cave"}],"studyCode":null,"studyName":"Chongqing, Southwest China Holocene Stalagmite Oxygen Isotope Data","studyNotes":"Oxygen isotope (d18O) data from 4 Holocene stalagmites collected from three caves in Chongqing, southwest China. Included are data from stalagmite QM09 from Shizi Cave, stalagmites J12 and J13 from Jinfo Cave, stalagmite HF01 from Heifeng Cave, plus stacked data from all 4 Chongqing stalagmites.","version":"1.0","xmlId":"65574"}