{"NOAAStudyId":"24371","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":"2018-06-08","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-24371.xml","doi":null,"earliestYearBP":123001,"earliestYearCE":-121051,"entryId":"noaa-icecore-24371","funding":[{"fundingAgency":"Swiss National Science Foundation","fundingGrant":"200020-135152"}],"investigators":"Kindler, P.; Guillevic, M.; Baumgartner, M.; Schwander, J.; Landais, A.; Leuenberger, M.","mostRecentYearBP":9700,"mostRecentYearCE":-7750,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/24371","originalSource":null,"publication":[{"abstract":"In order to reconstruct the temperature of the North Greenland Ice Core Project (NGRIP) site, new measurements of d15N have been performed covering the time period from the beginning of the Holocene to Dansgaard-Oeschger (DO) event 8. Together with previously measured and mostly published d15N data, we present for the first time a NGRIP temperature reconstruction for the whole last glacial period from 10 to 120 kyr b2k (thousand years before 2000 AD) including every DO event based on d15N isotope measurements combined with a firn densification and heat diffusion model. The detected temperature rises at the onset of DO events range from 5 C (DO 25) up to 16.5 C (DO 11) with an uncertainty of +/- 3 C. To bring measured and modelled data into agreement, we had to reduce the accumulation rate given by the NGRIP ss09sea06bm timescale in some periods by 30 to 35%, especially during the last glacial maximum. A comparison between reconstructed temperature and d18Oice data confirms that the isotopic composition of the stadial was strongly influenced by seasonality. We evidence an anticorrelation between the variations of the d18Oice sensitivity to temperature (referred to as alpha) and obliquity in agreement with a simple Rayleigh distillation model. Finally, we suggest that alpha might be influenced by the Northern Hemisphere ice sheet volume.","author":{"name":"P. Kindler, M. Guillevic, M. Baumgartner, J. Schwander, A. Landais, M. Leuenberger"},"citation":"P. Kindler, M. Guillevic, M. Baumgartner, J. Schwander, A. Landais, M. Leuenberger. 2014. Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core. Climate of the Past, 10, 887-902. doi: 10.5194/cp-10-887-2014","edition":null,"identifier":{"id":"10.5194/cp-10-887-2014","type":"doi","url":"http://dx.doi.org/10.5194/cp-10-887-2014"},"issue":null,"journal":"Climate of the Past","pages":"887-902","pubRank":"1","pubYear":2014,"reportNumber":null,"title":"Temperature reconstruction from 10 to 120 kyr b2k from the NGRIP ice core","type":"publication","volume":"10"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"31412","geo":{"geoType":"Feature","geometry":{"coordinates":["75.1","-42.33"],"type":"POINT"},"properties":{"easternmostLongitude":"-42.33","maxElevationMeters":"2917","minElevationMeters":"2917","northernmostLatitude":"75.1","southernmostLatitude":"75.1","westernmostLongitude":"-42.33"}},"locationName":"Continent>North America>Greenland","mappable":"Y","paleoData":[{"NOAADataTableId":"36113","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>age control"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/ngrip2014age.txt","linkText":"North GRIP Ice Core Age Models","urlDescription":"NOAA Template File","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":"ss09sea06bm ice age; 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