{"NOAAStudyId":"23231","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":"2017-11-17","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-23231.xml","doi":null,"earliestYearBP":-6,"earliestYearCE":1956,"entryId":"noaa-icecore-23231","funding":[{"fundingAgency":"European Science Foundation/European Commission","fundingGrant":"ENV4-CT95-0074"}],"investigators":"Isaksson, E.; van den Broeke, M.; Winther, J.-G.; Karlöf, L.; Pinglot, J.F.; Gundestrup, N.","mostRecentYearBP":-46,"mostRecentYearCE":1996,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23231","originalSource":null,"publication":[{"abstract":"During 1996–97 a European Project for Ice Coring in Antarctica (EPICA) pre-site surveying traverse worked in the area between 70° S, 5° E and 75° S, 15° E in Dronning Maud Land. We present data obtained from 10 and 20 m deep firn cores drilled between the coast and 600 km inland (to 3450 m a.s.l.). The cores were analyzed for electrical conductivity measurements and total ? activity to obtain accumulation data between known time horizons. In addition, some ofthe cores were analyzed for oxygen isotopes. Annual accumulation varies from 271 mm w.e. at Fimbulisen to 24 mm w.e. at 2840 m a.s.l. Accumulation at core sites 2400–3000 m a.s.l. has increased by 16–48% since 1965 compared to the 1955–65 period. However, the core sites above 3250 m a.s.l. and one core location on the ice shelf show a decrease during the same period. Furthermore, no change can be detected at the most inland site for the period 1815–1996. In all the cores the last few years seem to have been some of the warmest in these records.","author":{"name":"Isaksson, E., M. Van den Broeke, J. Winther, L. Karlöf, J. Francis Pinglot, and N. Gundestrup"},"citation":"Isaksson, E., M. Van den Broeke, J. Winther, L. Karlöf, J. Francis Pinglot, and N. Gundestrup. 1999. Accumulation and proxy-temperature variability in Dronning Maud Land, Antarctica, determined from shallow firn cores. Annals of Glaciology, 29(1), 17-22. doi: 10.3189/172756499781821445","edition":null,"identifier":{"id":"10.3189/172756499781821445","type":"doi","url":"http://dx.doi.org/10.3189/172756499781821445"},"issue":"1","journal":"Annals of Glaciology","pages":"17-22","pubRank":"1","pubYear":1999,"reportNumber":null,"title":"Accumulation and proxy-temperature variability in Dronning Maud Land, Antarctica, determined from shallow firn cores","type":"publication","volume":"29"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57568","geo":{"geoType":"Feature","geometry":{"coordinates":["-70.2472","4.8183"],"type":"POINT"},"properties":{"easternmostLongitude":"4.8183","maxElevationMeters":"63","minElevationMeters":"63","northernmostLatitude":"-70.2472","southernmostLatitude":"-70.2472","westernmostLongitude":"4.8183"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"34716","coreLengthMeters":10,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_09-PAGESAnt2k-DML_Fimbulisen_S20.txt","linkText":"S20 d18O Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"annual counting by dO18; electrical conductivity; volcanic horizon","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":"mean annual values","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"S20 d18O Isaksson1999","dataTableNotes":null,"earliestYear":1956,"earliestYearBP":-6,"earliestYearCE":1956,"mostRecentYear":1996,"mostRecentYearBP":-46,"mostRecentYearCE":1996,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"34717","coreLengthMeters":10,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>accumulation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_09-accum-DML_Fimbulisen_S20.txt","linkText":"S20 Snow Accumulation Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"annual counting by dO18; electrical conductivity","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":"calculated from annual dating from dO18 stratigraphy","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>precipitation>snow","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"kilogram per square meter per year","cvWhat":"formation property>formation rate>accumulation rate"}]}],"dataTableName":"S20 accum Isaksson1999","dataTableNotes":null,"earliestYear":1956,"earliestYearBP":-6,"earliestYearCE":1956,"mostRecentYear":1996,"mostRecentYearBP":-46,"mostRecentYearCE":1996,"species":[],"timeUnit":"AD"}],"siteName":"S20 Fimbulisen Dronning Maud Land"},{"NOAASiteId":"57569","geo":{"geoType":"Feature","geometry":{"coordinates":["-74.6472","12.7958"],"type":"POINT"},"properties":{"easternmostLongitude":"12.7958","maxElevationMeters":"3406","minElevationMeters":"3406","northernmostLatitude":"-74.6472","southernmostLatitude":"-74.6472","westernmostLongitude":"12.7958"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"34715","coreLengthMeters":9,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site1_07-PAGESAnt2k-DML_Ice_divide_traverse_L.txt","linkText":"L89 d18O Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"electrical conductivity; beta profiling; volcanic tuning","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>ice age"},{"cvAdditionalInfo":"mean annual values","cvDataType":"ICE CORES","cvDetail":"interpolated","cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":"isotope ratio mass spectrometry","cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil SMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"}]}],"dataTableName":"L89 d18O Isaksson1999","dataTableNotes":null,"earliestYear":1962,"earliestYearBP":-12,"earliestYearCE":1962,"mostRecentYear":1996,"mostRecentYearBP":-46,"mostRecentYearCE":1996,"species":[],"timeUnit":"AD"}],"siteName":"L89 Eastern Dronning Maud Land"}],"studyCode":null,"studyName":"Eastern Dronning Maud Land, Antarctica oxygen isotope and accumulation rate data from 1956-1996 CE","studyNotes":"DML data contributed to the PAGES 2k project. Average annual snow accumulation rate for site L89 over the 1965-1996 period was 41 kg/m2/yr.\r\n       Provided Keywords: oxygen isotope of water, temperature proxy, accumulation rate","version":"1.0","xmlId":"21435"}