{"NOAAStudyId":"12971","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":"2012-05-30","dataPublisher":"NOAA","dataType":"LOESS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/loess-eolian-dust","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-loess-12971.xml","doi":null,"earliestYearBP":60100,"earliestYearCE":-58150,"entryId":"noaa-loess-12971","funding":[],"investigators":"Sun, Y.; Clemens, S.C.; Morrill, C.; Lin, X.P.; Wang, X.L.; An, Z.","mostRecentYearBP":2000,"mostRecentYearCE":-50,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/12971","originalSource":null,"publication":[{"abstract":"The last glacial period was characterized by abrupt, millennial-scale \r\nclimate change. These climate fluctuations are particularly pronounced \r\nin records of the East Asian monsoon system, and seem to be linked to \r\nchanges in North Atlantic circulation. Here we present records of \r\ngrain size variations from the northwestern Chinese Loess Plateau, \r\ndated using optically stimulated luminescence. We reconstruct changes \r\nin the strength of the East Asian winter monsoon over the past 60,000 \r\nyears and find reconstructed millennial-scale variations that are \r\nbroadly correlated with temperature variations over Greenland, \r\nsuggesting a common forcing. We investigate the effect of a slow-down \r\nof Atlantic meridional overturning circulation on the monsoon system \r\nusing a coupled climate model simulation with added freshwater flux \r\ninto the northern North Atlantic, and find a strengthening winter \r\nmonsoon circulation over the regions that supply dust to the Loess\r\nPlateau and a reduction in summer monsoon precipitation over East Asia. \r\nWe conclude that Atlantic meridional overturning circulation \r\nis a driver of abrupt change in the East Asian winter and summer \r\nmonsoon systems, and that the northern westerlies play a role \r\nin transmitting this signal from the North Atlantic to the Asian \r\nmonsoon regions.","author":null,"citation":"Sun, Y.B., S.C. Clemens, C. Morrill, X.P. Lin, X.L. Wang, \r\nand Z.S. An. 2012. \r\nInfluence of Atlantic meridional overturning circulation \r\non the East Asian winter monsoon. \r\nNature Geoscience, Vol. 5, pp. 46-49. \r\nDOI: 10.1038/NGEO1326 ","edition":null,"identifier":{"id":"10.1038/NGEO1326","type":"doi","url":"http://dx.doi.org/10.1038/NGEO1326"},"issue":null,"journal":"Nature Geoscience","pages":null,"pubRank":"1","pubYear":2012,"reportNumber":null,"title":"Influence of Atlantic meridional overturning circulation  on the East Asian winter monsoon","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["Meridional Overturning Circulation (MOC)","abrupt climate change","Monsoon"],"site":[{"NOAASiteId":"53065","geo":{"geoType":"Feature","geometry":{"coordinates":["36.35","104.6"],"type":"POINT"},"properties":{"easternmostLongitude":"104.6","maxElevationMeters":"2210","minElevationMeters":"2210","northernmostLatitude":"36.35","southernmostLatitude":"36.35","westernmostLongitude":"104.6"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"22440","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>loess"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.txt","linkText":"sun2012clp.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"unspecified unit","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility"},{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"micrometer","cvWhat":"physical property>diameter>grain size>grain size parameter>grain size mean"},{"cvAdditionalInfo":"Gulang OSL age","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"unspecified unit","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"micrometer","cvWhat":"physical property>diameter>grain size>grain size parameter>grain size mean"},{"cvAdditionalInfo":"Jingyuan OSL age","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"}]},{"NOAAKeywords":["earth science>paleoclimate>loess"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.xls","linkText":"sun2012clp.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Jingyuan2012","dataTableNotes":null,"earliestYear":46930,"earliestYearBP":46930,"earliestYearCE":-44980,"mostRecentYear":2000,"mostRecentYearBP":2000,"mostRecentYearCE":-50,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Jingyuan"},{"NOAASiteId":"53066","geo":{"geoType":"Feature","geometry":{"coordinates":["37.49","102.88"],"type":"POINT"},"properties":{"easternmostLongitude":"102.88","maxElevationMeters":"2400","minElevationMeters":"2400","northernmostLatitude":"37.49","southernmostLatitude":"37.49","westernmostLongitude":"102.88"}},"locationName":"Continent>Asia>Eastern Asia>China","mappable":"Y","paleoData":[{"NOAADataTableId":"22441","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>loess"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.txt","linkText":"sun2012clp.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"unspecified unit","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility"},{"cvAdditionalInfo":"Gulang","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"micrometer","cvWhat":"physical property>diameter>grain size>grain size parameter>grain size mean"},{"cvAdditionalInfo":"Gulang OSL age","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"unspecified unit","cvWhat":"magnetic property>magnetic moments>magnetic susceptibility"},{"cvAdditionalInfo":"Jingyuan","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>dust>loess","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"micrometer","cvWhat":"physical property>diameter>grain size>grain size parameter>grain size mean"},{"cvAdditionalInfo":"Jingyuan OSL age","cvDataType":"LOESS","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"}]},{"NOAAKeywords":["earth science>paleoclimate>loess"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/loess/china/sun2012clp.xls","linkText":"sun2012clp.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Gulang2012","dataTableNotes":null,"earliestYear":60100,"earliestYearBP":60100,"earliestYearCE":-58150,"mostRecentYear":2000,"mostRecentYearBP":2000,"mostRecentYearCE":-50,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Gulang"}],"studyCode":null,"studyName":"Chinese Loess Plateau 60KYr Grain Size Data","studyNotes":"Grain size data for the past 60,000 years from 2 loess sections \nin the northwestern Chinese Loess Plateau.  20-m sampling pits \nwere excavated at Jingyuan and Gulang, with age models developed \nvia 40 optically stimulated luminescence (OSL) measurements. \nGrain size was measured on 2000 samples taken at 2-cm. intervals. \nGrain size data is interpreted as a winter monsoon strength proxy. \n\nJingyuan, Chinese Loess Plateau: 36.35°N, 104.6°E,  2210 m elev. \nGulang, Chinese Loess Plateau:   37.49°N, 102.88°E, 2400 m elev.\n\n","version":"1.0","xmlId":"11013"}