{"NOAAStudyId":"11131","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":"2011-04-29","dataPublisher":"NOAA","dataType":"ICE CORES","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/ice-core","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-icecore-11131.xml","doi":null,"earliestYearBP":59390,"earliestYearCE":-57440,"entryId":"noaa-icecore-11131","funding":[],"investigators":"Vinther, B.M.; Clausen, H.B.; Fisher, D.A.; Koerner, R.M.; Johnsen, S.J.; Andersen, K.K.; Dahl-Jensen, D.; Rasmussen, S.O.; Steffensen, J.P.; Svensson, A.M.","mostRecentYearBP":-10,"mostRecentYearCE":1960,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/11131","originalSource":null,"publication":[{"abstract":"Four ice cores from the Agassiz ice cap in the Canadian high arctic \nand one ice core from the Renland ice cap in eastern Greenland have \nbeen synchronized to the Greenland Ice Core Chronology 2005 (GICC05) \nwhich is based on annual layer counts in the DYE-3, GRIP and NGRIP \nice cores. Volcanic reference horizons, seen in electrical conductivity \nmeasurements (ECM) have been used to carry out the synchronization\nthroughout the Holocene. The Agassiz ice cores have been matched \nto the NGRIP ice core ECM signal, while the Renland core has been \nmatched to the GRIP ice core ECM signal, thus tying the cores to GICC05. \nFurthermore, it has been possible to synchronize the Renland ice core \nto NGRIP-GICC05 in the glacial period back to 60,000 years b2k \n(years before A.D. 2000), on the basis of a matching of transitions \nbetween stadials and interstadials. This work brings the total number \nof ice core records that have been rigorously tied to the GICC05 \ntimescale up to nine. Renland annual layer thicknesses are increasing \nwith depth during the period from 7 to 8.5 ka b2k, a highly unusual\nobservation only matched by a similar thickness increase in the glacial \nsection of the Renland core some 60 ka ago. Annual layer thicknesses \nin the Agassiz ice cores point to a well-developed Raymond bump \nin the Agassiz ice cap.  ","author":null,"citation":"Vinther, B.M., H.B. Clausen, D.A. Fisher, R.M. Koerner, \nS.J. Johnsen, K.K. Andersen, D. Dahl-Jensen, S.O. Rasmussen, \nJ.P. Steffensen, and A.M. Svensson. 2008. \nSynchronizing ice cores from the Renland and Agassiz ice caps \nto the Greenland Ice Core Chronology.  \nJ. Geophys. Res., 113, D08115, doi:10.1029/2007JD009143","edition":null,"identifier":{"id":"10.1029/2007JD009143","type":"doi","url":"http://dx.doi.org/10.1029/2007JD009143"},"issue":null,"journal":"Journal of Geophysical Research: Atmospheres","pages":null,"pubRank":"1","pubYear":2008,"reportNumber":null,"title":"Synchronizing ice cores from the Renland and Agassiz ice caps  to the Greenland Ice Core Chronology","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19988","geo":{"geoType":"Feature","geometry":{"coordinates":["80.7","-73.1"],"type":"POINT"},"properties":{"easternmostLongitude":"-73.1","maxElevationMeters":"1730","minElevationMeters":"1730","northernmostLatitude":"80.7","southernmostLatitude":"80.7","westernmostLongitude":"-73.1"}},"locationName":"Continent>North America>Canada","mappable":"Y","paleoData":[{"NOAADataTableId":"19646","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes","earth science>paleoclimate>ice core>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.txt","linkText":"vinther2008renland-agassiz.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"present defined as 2000 A.D.","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.xls","linkText":"vinther2008renland-agassiz.xls","urlDescription":"Data","variables":[]}],"dataTableName":"A87","dataTableNotes":"Part of Agassiz site","earliestYear":11650,"earliestYearBP":11650,"earliestYearCE":-9700,"mostRecentYear":10,"mostRecentYearBP":10,"mostRecentYearCE":1940,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"20497","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.txt","linkText":"vinther2008renland-agassiz.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"present defined as 2000 A.D.","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.xls","linkText":"vinther2008renland-agassiz.xls","urlDescription":"Data","variables":[]}],"dataTableName":"a77-vinther2008","dataTableNotes":null,"earliestYear":11650,"earliestYearBP":11650,"earliestYearCE":-9700,"mostRecentYear":10,"mostRecentYearBP":10,"mostRecentYearCE":1940,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"20498","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes","earth science>paleoclimate>ice core>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.txt","linkText":"vinther2008renland-agassiz.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"present defined as 2000 A.D.","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.xls","linkText":"vinther2008renland-agassiz.xls","urlDescription":"Data","variables":[]}],"dataTableName":"a79-vinther2008","dataTableNotes":null,"earliestYear":11650,"earliestYearBP":11650,"earliestYearCE":-9700,"mostRecentYear":10,"mostRecentYearBP":10,"mostRecentYearCE":1940,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"20499","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.txt","linkText":"vinther2008renland-agassiz.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"present defined as 2000 A.D.","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes","earth science>paleoclimate>ice core>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.xls","linkText":"vinther2008renland-agassiz.xls","urlDescription":"Data","variables":[]}],"dataTableName":"a84-vinther2008","dataTableNotes":null,"earliestYear":11650,"earliestYearBP":11650,"earliestYearCE":-9700,"mostRecentYear":10,"mostRecentYearBP":10,"mostRecentYearCE":1940,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Agassiz Ice Cap"},{"NOAASiteId":"48039","geo":{"geoType":"Feature","geometry":{"coordinates":["71.27","-26.73"],"type":"POINT"},"properties":{"easternmostLongitude":"-26.73","maxElevationMeters":"2350","minElevationMeters":"2350","northernmostLatitude":"71.27","southernmostLatitude":"71.27","westernmostLongitude":"-26.73"}},"locationName":"Continent>North America>Greenland","mappable":"Y","paleoData":[{"NOAADataTableId":"19647","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.txt","linkText":"vinther2008renland-agassiz.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"depth variable>depth"},{"cvAdditionalInfo":"present defined as 2000 A.D.","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"averaged","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>age control","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/polar/agassiz/vinther2008renland-agassiz.xls","linkText":"vinther2008renland-agassiz.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Renland","dataTableNotes":null,"earliestYear":59390,"earliestYearBP":59390,"earliestYearCE":-57440,"mostRecentYear":-10,"mostRecentYearBP":-10,"mostRecentYearCE":1960,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Renland"}],"studyCode":null,"studyName":"Renland and Agassiz Ice Core 60KYr d18O Data on GICC05 Timescale ","studyNotes":"Ice cores time scales for the Agassiz ice cap on Ellesmere Island \nand the Renland ice cap, Greenland.  The time scales are synchronized \nto the Greenland Ice Core Chronology 2005 (GICC05), utilizing volcanic \nreference horizons seen in electrical conductivity measurements (ECM) \nin the Holocene, and transitions between stadials and interstadials \nduring the glacial period.  ","version":"1.0","xmlId":"9512"}