{"NOAAStudyId":"17372","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":"2014-10-27","dataPublisher":"NOAA","dataType":"PALEOCEANOGRAPHY","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-ocean-17372.xml","doi":null,"earliestYearBP":24360,"earliestYearCE":-22410,"entryId":"noaa-ocean-17372","funding":[],"investigators":"Xie, R.C.; Marcantonio, F.; Schmidt, M.W.","mostRecentYearBP":710,"mostRecentYearCE":1240,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/17372","originalSource":null,"publication":[{"abstract":"Understanding intermediate water circulation across the last deglacial is critical in assessing the role of oceanic heat transport associated with Atlantic Meridional Overturning Circulation variability across abrupt climate events. However, the links between intermediate water circulation and abrupt climate events such as the Younger Dryas (YD) and Heinrich Event 1 (H1) are still poorly constrained. Here, we reconstruct changes in Antarctic Intermediate Water (AAIW) circulation in the subtropical North Atlantic over the past 25 kyrs by measuring authigenic neodymium isotope ratios in sediments from two sites in the Florida Straits. Our authigenic Nd isotope records suggest that there was little to no penetration of AAIW into the subtropical North Atlantic during the YD and H1. Variations in the northward penetration of AAIW into the Florida Straits documented in our authigenic Nd isotope record are synchronous with multiple climatic archives, including the Greenland ice core δ18O record, the Cariaco Basin atmosphere ∆14C reconstruction, the Bermuda Rise sedimentary Pa/Th record, and nutrient and stable isotope data from the tropical North Atlantic. The synchroneity of our Nd records with multiple climatic archives suggests a tight connection between AAIW variability and high-latitude North Atlantic climate change.","author":{"name":"Xie, R.C., F. Marcantonio, and M.W. Schmidt"},"citation":"Xie, R.C., F. Marcantonio, and M.W. Schmidt. 2012. Deglacial variability of the penetration of Antarctic Intermediate Water into the North Atlantic from authigenic neodymium isotope ratios. Paleoceanography, 27, PA3221. doi: 10.1029/2012PA002337","edition":null,"identifier":{"id":"10.1029/2012PA002337","type":"doi","url":"http://dx.doi.org/10.1029/2012PA002337"},"issue":null,"journal":"Paleoceanography","pages":null,"pubRank":"1","pubYear":2012,"reportNumber":"PA3221","title":"Deglacial variability of the penetration of Antarctic Intermediate Water into the North Atlantic from authigenic neodymium isotope ratios","type":"publication","volume":"27"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"31128","geo":{"geoType":"Feature","geometry":{"coordinates":["24.216667","-83.3"],"type":"POINT"},"properties":{"easternmostLongitude":"-83.3","maxElevationMeters":"-751","minElevationMeters":"-751","northernmostLatitude":"24.216667","southernmostLatitude":"24.216667","westernmostLongitude":"-83.3"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean","mappable":"Y","paleoData":[{"NOAADataTableId":"27631","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-31jpc.txt","linkText":"KNR166-2-31JPC Data","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"two standard deviations","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"two standard deviations","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"}]}],"dataTableName":"K166-2-31JPC Nd Isotopes Xp12","dataTableNotes":null,"earliestYear":24360,"earliestYearBP":24360,"earliestYearCE":-22410,"mostRecentYear":1810,"mostRecentYearBP":1810,"mostRecentYearCE":140,"species":[],"timeUnit":"cal yr BP"}],"siteName":"KNR166-2-31JPC"},{"NOAASiteId":"52444","geo":{"geoType":"Feature","geometry":{"coordinates":["24.326833","-83.252333"],"type":"POINT"},"properties":{"easternmostLongitude":"-83.252333","maxElevationMeters":"-546","minElevationMeters":"-546","northernmostLatitude":"24.326833","southernmostLatitude":"24.326833","westernmostLongitude":"-83.252333"}},"locationName":"Ocean>Atlantic Ocean>North Atlantic Ocean>Gulf Of Mexico","mappable":"Y","paleoData":[{"NOAADataTableId":"27630","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>paleocean>geochemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/xie2012-poc/xie2012-poc-26jpc.txt","linkText":"KNR166-2-26JPC Data","urlDescription":"Formatted Text File","variables":[{"cvAdditionalInfo":null,"cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar kiloyear before present","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"unspecified margin of error","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"Fe-Mn oxyhydroxide fraction","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"unspecified margin of error","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"dimensionless","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"},{"cvAdditionalInfo":"detrital sediment","cvDataType":"PALEOCEANOGRAPHY","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"geological material>bulk geological material>sediment","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"epsilon unit","cvWhat":"chemical composition>isotope>isotope ratio>143Nd/144Nd>epsilon neodymium"}]}],"dataTableName":"K166-2-26JPC Nd Isotopes Xp12","dataTableNotes":null,"earliestYear":22540,"earliestYearBP":22540,"earliestYearCE":-20590,"mostRecentYear":710,"mostRecentYearBP":710,"mostRecentYearCE":1240,"species":[],"timeUnit":"cal yr BP"}],"siteName":"KNR166-2-26JPC"}],"studyCode":null,"studyName":"Florida Strait Nd Isotopic Ratio Data over the last 25,000 Years","studyNotes":null,"version":"1.0","xmlId":"15051"}