{"NOAAStudyId":"23230","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-23230.xml","doi":null,"earliestYearBP":18,"earliestYearCE":1932,"entryId":"noaa-icecore-23230","funding":[{"fundingAgency":"Swedish Research Council ","fundingGrant":null}],"investigators":"Isaksson, E.; Karlén, W.; Gundestrup, N.; Mayewski, P.A.; Whitlow, S.I.; Twickler, M.S.","mostRecentYearBP":-41,"mostRecentYearCE":1991,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/23230","originalSource":null,"publication":[{"abstract":"A mass balance program was initiated in the Vestfjella-Heimefrontfjella area of western Dronning Maud Land during the austral summer of 1988–1989. As a part of this program, spatial and temporal variations in snow accumulation and temperature/stable isotopes are measured using shallow firn cores. In this paper we present surface accumulation data and discuss the climatic implications of the stable isotope records from two shallow firn cores. One 30-m-deep core, obtained about 200 km from the coast at 700 m asl (73°36'S, 12°26'W), covers the period 1932–1991. The other core was drilled at about 500 km from the coast at 2900 m asl (75°00'S, 2°00'E) and covers the period 1865–1991. The recent accumulation increase that has been reported from several areas of the Antarctic continent is not present in either of these records. Instead, our coastal record suggests a significant decrease in accumulation, with the strongest trend from about 1975. There is a positive trend in the oxygen isotope signal in both cores, which in the coastal core corresponds to a temperature increase of about 1.8°C since the early 1930s, and in the high-altitude core to about 0.8°C since 1865. However, it is likely that part of this increase in d18O is due to a change of moisture source.","author":{"name":"Isaksson, E., W. Karlen, N. Gundestrup, P. Mayewski, S. Whitlow, and M. Twickler"},"citation":"Isaksson, E., W. Karlen, N. Gundestrup, P. Mayewski, S. Whitlow, and M. Twickler. 1996. A century of accumulation and temperature changes in Dronning Maud Land, Antarctica. Journal of Geophysical Research: Atmospheres, 101(D3), 7085-7094. doi: 10.1029/95JD03232","edition":null,"identifier":{"id":"10.1029/95JD03232","type":"doi","url":"http://dx.doi.org/10.1029/95JD03232"},"issue":"D3","journal":"Journal of Geophysical Research: Atmospheres","pages":"7085-7094","pubRank":"1","pubYear":1996,"reportNumber":null,"title":"A century of accumulation and temperature changes in Dronning Maud Land, Antarctica","type":"publication","volume":"101"}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"57567","geo":{"geoType":"Feature","geometry":{"coordinates":["-73.6","-12.4333"],"type":"POINT"},"properties":{"easternmostLongitude":"-12.4333","maxElevationMeters":"700","minElevationMeters":"700","northernmostLatitude":"-73.6","southernmostLatitude":"-73.6","westernmostLongitude":"-12.4333"}},"locationName":"Continent>Antarctica","mappable":"Y","paleoData":[{"NOAADataTableId":"34713","coreLengthMeters":30,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>accumulation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_16-accum-DML_Ritscherflya_E91.txt","linkText":"Core E Snow Accumulation Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"annual counting by dO18 and 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","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":"E_91 accum Isaksson1996","dataTableNotes":null,"earliestYear":1932,"earliestYearBP":18,"earliestYearCE":1932,"mostRecentYear":1991,"mostRecentYearBP":-41,"mostRecentYearCE":1991,"species":[],"timeUnit":"AD"},{"NOAADataTableId":"34714","coreLengthMeters":30,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>oxygen isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/pages2k/stenni2017antarctica/DMLicecore/Site7_16-PAGESAnt2k-DML_Ritscherflya_E91.txt","linkText":"Core E d18O Data","urlDescription":"NOAA Template File","variables":[{"cvAdditionalInfo":"annual counting by dO18 and 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":"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":"E_91 d18O Isaksson1996","dataTableNotes":null,"earliestYear":1932,"earliestYearBP":18,"earliestYearCE":1932,"mostRecentYear":1991,"mostRecentYearBP":-41,"mostRecentYearCE":1991,"species":[],"timeUnit":"AD"}],"siteName":"Ritscherflya Core E Dronning Maud Land"}],"studyCode":null,"studyName":"Ritscherflya Dronning Maud Land, Antarctica oxygen isotope and accumulation rate data for 1932-1991 CE","studyNotes":"DML data contributed to the PAGES 2k project.\r\n       Provided Keywords: oxygen isotope of water, temperature proxy, accumulation rate","version":"1.0","xmlId":"21434"}