{"NOAAStudyId":"23211","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":"2017-12-07","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-23211.xml","doi":null,"earliestYearBP":190,"earliestYearCE":1760,"entryId":"noaa-cave-23211","funding":[{"fundingAgency":"National Basic Research Program of China","fundingGrant":"2013CB955902"},{"fundingAgency":"National Natural Science Foundation China","fundingGrant":"41372192, 41230524"},{"fundingAgency":"Chinese Academy of Sciences West Light Foundation","fundingGrant":null},{"fundingAgency":"Chinese Academy of Sciences","fundingGrant":"2012295"}],"investigators":"Tan, L.; Cai, Y.; An, Z.; Cheng, H.; Shen, C.-C.; Gao, Y.; Edwards, R.L.","mostRecentYearBP":-31,"mostRecentYearCE":1981,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23211","originalSource":null,"publication":[{"abstract":"Based on an absolutely dated stalagmite d18O record from Yunnan province, China, we reconstructed monsoon precipitation variations in southwest China since 1760 AD with a resolution of about 2 years. Combining the speleothem d18O and observed rainfall records, we find an overall decreasing trend in monsoon precipitation in this region and suggest that the recent drought in 2009-2012 AD has been the driest since 1760 AD. Our speleothem record is consistent with the monsoon precipitation records reconstructed from tree rings in the Nepal Himalaya and southeastern Tibetan Plateau. However, it is anti-correlated with a speleothem record from central India, which confirms the observed anti-phase variations of Indian monsoon precipitation with moistures from the Bay of Bengal and Arabian Sea on multi-decadal to centennial timescales during historical time. The long-term warming of tropical ocean may have caused the decrease of the land-sea thermal gradient and the amount of moisture transported from the Bay of Bengal, which may reduce precipitations in southwest China during the last 240 years. On decadal scale, El Nino-like conditions of tropical Pacific sea surface temperature may cause drought in this region. Climate model simulations suggest El Niño-like conditions exist in tropical Pacific under global warming scenarios. As a result, it is crucial to have adaptive strategies to overcome future declines in precipitation and/or drought events in southwest China.","author":{"name":"Liangcheng Tan, Yanjun Cai, Zhisheng An, Hai Cheng, Chuan-Chou Shen, Yongli Gao, R. Lawrence Edwards"},"citation":"Liangcheng Tan, Yanjun Cai, Zhisheng An, Hai Cheng, Chuan-Chou Shen, Yongli Gao, R. Lawrence Edwards. 2017. Decreasing monsoon precipitation in southwest China during the last 240 years associated with the warming of tropical ocean. Climate Dynamics, 48(5-6), 1769-1778. doi: 10.1007/s00382-016-3171-y","edition":null,"identifier":{"id":"10.1007/s00382-016-3171-y","type":"doi","url":"http://dx.doi.org/10.1007/s00382-016-3171-y"},"issue":"5-6","journal":"Climate Dynamics","pages":"1769-1778","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Decreasing monsoon precipitation in southwest China during the last 240 years associated with the warming of tropical ocean","type":"publication","volume":"48"}],"reconstruction":"N","scienceKeywords":["Monsoon"],"site":[{"NOAASiteId":"22932","geo":{"geoType":"Feature","geometry":{"coordinates":["24.2","103.35"],"type":"POINT"},"properties":{"easternmostLongitude":"103.35","maxElevationMeters":"1500","minElevationMeters":"1500","northernmostLatitude":"24.2","southernmostLatitude":"24.2","westernmostLongitude":"103.35"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"34675","coreLengthMeters":0,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>speleothems>oxygen isotopes","earth science>paleoclimate>speleothems>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/xiaobailong2017.txt","linkText":"Xiaobailong Cave Stable Isotope Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":null,"cvDataType":"SPELEOTHEMS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","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 13C"},{"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":"Xiaobailong2017","dataTableNotes":null,"earliestYear":1760,"earliestYearBP":190,"earliestYearCE":1760,"mostRecentYear":1981,"mostRecentYearBP":-31,"mostRecentYearCE":1981,"species":[],"timeUnit":"AD"}],"siteName":"XiaoBailong Cave"}],"studyCode":null,"studyName":"Xiaobailong Cave, Southwest China 240 Year Speleothem Stable Isotope Data","studyNotes":"Speleothem oxygen and carbon isotope records from Xiaobailong Cave, Southwest China over the last 240 years.","version":"1.0","xmlId":"21416"}