{"NOAAStudyId":"2422","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":"2000-06-01","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-2422.xml","doi":null,"earliestYearBP":109175,"earliestYearCE":-107225,"entryId":"noaa-icecore-2422","funding":[],"investigators":"Brook, E.J.; Harder, S.; Severinghaus, J.; Steig, E.J.; Sucher, C.M.","mostRecentYearBP":133,"mostRecentYearCE":1817,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2422","originalSource":null,"publication":[{"abstract":null,"author":null,"citation":"Brook, E.J., S. Harder, J. Severinghaus, E.J. Steig, and C.M. Sucher. 2000. On the origin and timing of rapid changes in atmospheric methane during the last glacial period. Global Biogeochemical Cycles 14(2):559-572.","edition":null,"identifier":null,"issue":null,"journal":"Global Biogeochemical Cycles","pages":null,"pubRank":"1","pubYear":2000,"reportNumber":null,"title":"On the origin and timing of rapid changes in atmospheric methane during the last glacial period","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19978","geo":{"geoType":"Feature","geometry":{"coordinates":["72.6","-38.5"],"type":"POINT"},"properties":{"easternmostLongitude":"-38.5","maxElevationMeters":"3200","minElevationMeters":"3200","northernmostLatitude":"72.6","southernmostLatitude":"72.6","westernmostLongitude":"-38.5"}},"locationName":"Continent>North America>Greenland","mappable":"Y","paleoData":[{"NOAADataTableId":"38458","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>atmospheric gas"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/gases/gisp2_ch4_highres.txt","linkText":"gisp2_ch4_highres.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":"calendar kiloyear before present","cvWhat":"age variable>age>gas age"},{"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"}]}],"dataTableName":"GISP2 HiRes CH4 Brook2000","dataTableNotes":"Methane concentrations were determined by GC-FID using standards calibrated by NOAA CMDL.  The gas age time scales and analytical techniques are described in further detail in the publication.","earliestYear":109175,"earliestYearBP":109175,"earliestYearCE":-107225,"mostRecentYear":133,"mostRecentYearBP":133,"mostRecentYearCE":1817,"species":[],"timeUnit":"cal yr BP"},{"NOAADataTableId":"38459","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>atmospheric gas"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gisp2/gases/readme_gisp2_ch4_highres.txt","linkText":"readme_gisp2_ch4_highres.txt","urlDescription":"Readme","variables":[]}],"dataTableName":"GISP2 HiRes Readme Brook2000","dataTableNotes":null,"earliestYear":null,"earliestYearBP":null,"earliestYearCE":null,"mostRecentYear":null,"mostRecentYearBP":null,"mostRecentYearCE":null,"species":[],"timeUnit":null}],"siteName":"GISP2"}],"studyCode":null,"studyName":"GISP2, Taylor Dome - Methane Concentration Data","studyNotes":null,"version":"1.0","xmlId":"2217"}