{"NOAAStudyId":"16493","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":"2014-05-27","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-16493.xml","doi":null,"earliestYearBP":149992,"earliestYearCE":-148042,"entryId":"noaa-icecore-16493","funding":[{"fundingAgency":"Swiss National Science Foundation","fundingGrant":null},{"fundingAgency":"Prince Albert II of Monaco Foundation","fundingGrant":null}],"investigators":"Schüpbach, S.; Federer, U.; Kaufmann, P.R.; Albani, S.; Barbante, C.; Stocker, T.F.; Fischer, H.","mostRecentYearBP":3791,"mostRecentYearCE":-1841,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16493","originalSource":null,"publication":[{"abstract":"In this study we report on new non-sea salt calcium (nssCa2+, mineral dust proxy) and sea salt sodium (ssNa+, sea ice proxy) records along the East Antarctic Talos Dome deep ice core in centennial resolution reaching back 150 thousand years (ka) before present. During glacial conditions nssCa2+ fluxes in Talos Dome are strongly related to temperature as has been observed before in other deep Antarctic ice core records, and has been associated with synchronous changes in the main source region (southern South America) during climate variations in the last glacial. However, during warmer climate conditions Talos Dome mineral dust input is clearly elevated compared to other records mainly due to the contribution of additional local dust sources in the Ross Sea area. Based on a simple transport model, we compare nssCa2+ fluxes of different East Antarctic ice cores. From this multi-site comparison we conclude that changes in transport efficiency or atmospheric lifetime of dust particles do have a minor effect compared to source strength changes on the large-scale concentration changes observed in Antarctic ice cores during climate variations of the past 150 ka. Our transport model applied on ice core data is further validated by climate model data.\r\n\r\nThe availability of multiple East Antarctic nssCa2+ records also allows for a revision of a former estimate on the atmospheric CO2 sensitivity to reduced dust induced iron fertilisation in the Southern Ocean during the transition from the Last Glacial Maximum to the Holocene (T1). While a former estimate based on the EPICA Dome C (EDC) record only suggested 20 ppm, we find that reduced dust induced iron fertilisation in the Southern Ocean may be responsible for up to 40 ppm of the total atmospheric CO2 increase during T1. During the last interglacial, ssNa+ levels of EDC and EPICA Dronning Maud Land (EDML) are only half of the Holocene levels, in line with higher temperatures during that period, indicating much reduced sea ice extent in the Atlantic as well as the Indian Ocean sector of the Southern Ocean. In contrast, Holocene ssNa+ flux in Talos Dome is about the same as during the last interglacial, indicating that there was similar ice cover present in the Ross Sea area during MIS 5.5 as during the Holocene.","author":{"name":"S. Schüpbach, U. Federer, P.R. Kaufmann, S. Albani, C. Barbante, T.F. Stocker, and H. Fischer"},"citation":"S. Schüpbach, U. Federer, P.R. Kaufmann, S. Albani, C. Barbante, T.F. Stocker, and H. Fischer. 2013. High-resolution mineral dust and sea ice proxy records from the Talos Dome ice core. Climate of the Past, 9(6), 2789-2807. doi: 10.5194/cp-9-2789-2013","edition":null,"identifier":{"id":"10.5194/cp-9-2789-2013","type":"doi","url":"http://dx.doi.org/10.5194/cp-9-2789-2013"},"issue":"6","journal":"Climate of the Past","pages":"2789-2807","pubRank":"1","pubYear":2013,"reportNumber":null,"title":"High-resolution mineral dust and sea ice proxy records from the Talos Dome ice core","type":"publication","volume":"9"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"31509","geo":{"geoType":"Feature","geometry":{"coordinates":["-72.8166","159.1833"],"type":"POINT"},"properties":{"easternmostLongitude":"159.1833","maxElevationMeters":"2315","minElevationMeters":"2315","northernmostLatitude":"-72.8166","southernmostLatitude":"-72.8166","westernmostLongitude":"159.1833"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"26650","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>chemistry"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/antarctica/talos/taldice2013ca-na.txt","linkText":"TALDICE 1cm. Calcium and Sodium Data","urlDescription":"Data 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":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>ice age"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"continuous flow analysis","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per billion","cvWhat":"chemical composition>element or single-element molecule>sodium"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"continuous flow analysis","cvSeasonality":null,"cvShortName":null,"cvUnit":"parts per billion","cvWhat":"chemical composition>element or single-element molecule>calcium"}]}],"dataTableName":"TALDICE2013CaNa","dataTableNotes":null,"earliestYear":149992,"earliestYearBP":149992,"earliestYearCE":-148042,"mostRecentYear":3791,"mostRecentYearBP":3791,"mostRecentYearCE":-1841,"species":[],"timeUnit":"cal yr BP"}],"siteName":"Talos Dome TALDICE"}],"studyCode":null,"studyName":"TALDICE Ice Core 150KYr 1cm Calcium and Sodium Data","studyNotes":"High-resolution (1-cm.) non-sea salt calcium and sea salt sodium data from the TALDICE ice core.","version":"1.0","xmlId":"14220"}