{"NOAAStudyId":"11129","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":"2011-04-26","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-11129.xml","doi":null,"earliestYearBP":19000,"earliestYearCE":-17050,"entryId":"noaa-icecore-11129","funding":[],"investigators":"Morgan, V.I.; Delmotte, M.; van Ommen, T.D.; Jouzel, J.; Chappellaz, J.A.; Woon, S.; Masson-Delmotte, V.; Raynaud, D.","mostRecentYearBP":9000,"mostRecentYearCE":-7050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/11129","originalSource":null,"publication":[{"abstract":"The last deglaciation was marked by large, hemispheric, millennial-scale \r\nclimate variations: the Bølling-Allerød and Younger Dryas periods in the \r\nnorth, and the Antarctic Cold Reversal in the south. A chronology from \r\nthe high-accumulation Law Dome East Antarctic ice core constrains the \r\nrelative timing of these two events and provides strong evidence that \r\nthe cooling at the start of the Antarctic Cold Reversal did not follow \r\nthe abrupt warming during the northern Bølling transition around 14,500 \r\nyears ago. This result suggests that southern changes are not a direct \r\nresponse to abrupt changes in North Atlantic thermohaline circulation, \r\nas is assumed in the conventional picture of a hemispheric temperature \r\nseesaw. ","author":null,"citation":"Morgan, V., M. Delmotte, T. van Ommen, J. Jouzel, J. Chappellaz, \r\nS. Woon, V. Masson-Delmotte, and D. Raynaud. 2002. \r\nRelative Timing of Deglacial Climate Events in Antarctica and Greenland.\r\nScience, Vol. 297, pp.1862-1864. \r\nDOI: 10.1126/science.1074257","edition":null,"identifier":{"id":"10.1126/science.1074257","type":"doi","url":"http://dx.doi.org/10.1126/science.1074257"},"issue":null,"journal":"Science","pages":null,"pubRank":"1","pubYear":2002,"reportNumber":null,"title":"Relative Timing of Deglacial Climate Events in Antarctica and Greenland","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":["Meridional Overturning Circulation (MOC)"],"site":[{"NOAASiteId":"19999","geo":{"geoType":"Feature","geometry":{"coordinates":["-66.73","112.83"],"type":"POINT"},"properties":{"easternmostLongitude":"112.83","maxElevationMeters":"1390","minElevationMeters":"1390","northernmostLatitude":"-66.73","southernmostLatitude":"-66.73","westernmostLongitude":"112.83"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"19606","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>atmospheric gas","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2002.txt","linkText":"law2002.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth>depth at sample end"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter","cvWhat":"depth variable>depth>depth at sample start"},{"cvAdditionalInfo":null,"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>gas age"},{"cvAdditionalInfo":"alternate chronology using smallest likely delta age","cvDataType":"ICE CORES","cvDetail":null,"cvError":"range lower bound","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year before present","cvWhat":"age variable>age>gas age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per billion","cvWhat":"chemical composition>compound>organic compound>hydrocarbon>alkane>n-alkane>methane"}]},{"NOAAKeywords":["earth science>paleoclimate>ice core>atmospheric gas","earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/law/law2002.xls","linkText":"law2002.xls","urlDescription":"Data","variables":[]}],"dataTableName":"Law Dome 19k","dataTableNotes":null,"earliestYear":19000,"earliestYearBP":19000,"earliestYearCE":-17050,"mostRecentYear":9000,"mostRecentYearBP":9000,"mostRecentYearCE":-7050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Law Dome"}],"studyCode":null,"studyName":"Law Dome Ice Core Deglacial Methane and Oxygen Isotope Data","studyNotes":"Oxygen isotope data of air and ice plus air methane concentration \nfor the last deglacial period, from the Law Dome ice core, Antarctica.  \n\nThese data are also available in the supplementary materials for \nMorgan et al. Science 297:1862, at: \nhttp://www.sciencemag.org/content/suppl/2002/09/12/297.5588.1862.DC1.html \n\nThese data are also archived by the Australian Antarctic Division's \nCatalogue of Australian Antarctic and Subantarctic Metatdata (CAASM), at: \nhttp://gcmd.nasa.gov/KeywordSearch/Metadata.do?Portal=amd_au&KeywordPath=Parameters%7C%28%5BFreetext%3D%27law+dome%27%5D%29&OrigMetadataNode=AADC&EntryId=air_methane_lawdome&MetadataView=Full&MetadataType=0&lbnode=mdlb3 \n","version":"1.0","xmlId":"9472"}