{"NOAAStudyId":"2443","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":"1999-01-01","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-2443.xml","doi":null,"earliestYearBP":253000,"earliestYearCE":-251050,"entryId":"noaa-icecore-2443","funding":[],"investigators":"Fischer, H.; Wahlen, M.; Smith, J.; Mastroianni, D.; Deck, B.","mostRecentYearBP":75000,"mostRecentYearCE":-73050,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/2443","originalSource":null,"publication":[{"abstract":null,"author":null,"citation":"Fischer, H., M. Wahlen, J. Smith, D. Mastroianni, and B. Deck. 1999. Ice core records of atmospheric CO2 around the last three glacial terminations. Science 283:1712-1714.","edition":null,"identifier":null,"issue":null,"journal":"Science","pages":null,"pubRank":"1","pubYear":1999,"reportNumber":null,"title":"Ice core records of atmospheric CO2 around the last three glacial terminations","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"19976","geo":{"geoType":"Feature","geometry":{"coordinates":["-78.47","106.8"],"type":"POINT"},"properties":{"easternmostLongitude":"106.8","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"-78.47","southernmostLatitude":"-78.47","westernmostLongitude":"106.8"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"38382","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>atmospheric gas"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/vostok/vostok_co2.txt","linkText":"vostok_co2.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Character","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"sampling metadata>notes"},{"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":"corrected to line up cores","cvDataType":"ICE CORES","cvDetail":"corrected","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 year before present","cvWhat":"age variable>age>gas age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"calendar year 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":"tunable diode laser absorption spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":"mechanical dry extraction","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":"tunable diode laser absorption spectroscopy","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE FORCING|ICE CORES","cvDetail":null,"cvError":"one standard deviation","cvFormat":"Numeric","cvMaterial":"atmospheric material>bulk atmosphere","cvMethod":"mechanical dry extraction","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per million","cvWhat":"chemical composition>compound>inorganic compound>carbon dioxide"}]}],"dataTableName":"Vostok CO2 Fisher1999","dataTableNotes":"CO2 data obtained from the Vostok core, 1105-2856m.\r\nThe techniques employed were similar to those published in M. Wahlen et al. (1991), but continuously improved. \r\nThree samples (about 4 g each), carefully trimmed, from 1 cm  depth resolution were measured on a daily basis, together with three standard gases (163 to 330 ppm). The standard gases were admitted over the crushed ice to closely reproduce \r\nthe sample conditions.\r\nAt least four scans by tunable diode IR laser spectrometry were performed over a single vibrational -rotational IR line at Doppler resolution in the 4.3 mm band for each sample, \r\nand standard.  Portions of doubtful ice quality were remeasuared frequently. The first and second columns give the depth of the G4 and G5 cores which are offset by 3.4 m, and the third and fourths columns give air age values. The second and fourth columns were used in the publication. The air ages were derived from Jouzel et al., Nature, 364, 407 (1993); Barnola et al., Tellus, B 43 , 83 (1991); J. R. Petit et al., Nature, 387, 359 (1997): and Jean Jouzel, and J. M. Barnola (personal comm.). The fourth column is the average CO2 concentration and the following is the 1 sigma standard error of the mean. The next entry is the date of analysis. The last entry is the number of samples (usually 3 within 1 cm depth) and in regions with doubtful ice quality repeated measurements were made with plus/minus six to 10 cm depth resolution.","earliestYear":253000,"earliestYearBP":253000,"earliestYearCE":-251050,"mostRecentYear":75000,"mostRecentYearBP":75000,"mostRecentYearCE":-73050,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Vostok"}],"studyCode":null,"studyName":"Vostok Ice Core CO2 Data, 1105-2856m","studyNotes":null,"version":"1.0","xmlId":"1298"}