{"NOAAStudyId":"8618","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":"2009-06-02","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-8618.xml","doi":null,"earliestYearBP":561,"earliestYearCE":1389,"entryId":"noaa-icecore-8618","funding":[],"investigators":"Berggren, A.-M.; Beer, J.; Possnert, G.; Aldahan, A.; Kubik, P.W.; Christl, M.; Johnsen, S.J.; Abreu, J.; Vinther, B.M.","mostRecentYearBP":-45,"mostRecentYearCE":1995,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/8618","originalSource":null,"publication":[{"abstract":"Despite the extensive use of 10Be as the most significant \ninformation source on past solar activity, there has been only \none record (Dye-3, Greenland) providing annual resolution over \nseveral centuries. Here we report a new annual resolution 10Be \nrecord spanning the period 1389–1994 AD, measured in an ice core \nfrom the NGRIP site in Greenland. NGRIP and Dye-3 10Be exhibits \nsimilar long-term variability, although occasional short term \ndifferences between the two sites indicate that at least two \nhigh resolution 10Be records are needed to assess local variations \nand to confidently reconstruct past solar activity. A comparison \nwith sunspot and neutron records confirms that ice core 10Be \nreflects solar Schwabe cycle variations, and continued 10Be \nvariability suggests cyclic solar activity throughout the \nMaunder and Spörer grand solar activity minima. Recent 10Be \nvalues are low; however, they do not indicate unusually high \nrecent solar activity compared to the last 600 years. \n","author":null,"citation":"Berggren, A.-M., J. Beer, G. Possnert, A. Aldahan, P. Kubik, \nM. Christl, S. J. Johnsen, J. Abreu, and B. M. Vinther. 2009.\nA 600-year annual 10Be record from the NGRIP ice core, Greenland.  \nGeophys. Res. Lett., 36, L11801, doi:10.1029/2009GL038004. \n","edition":null,"identifier":{"id":"10.1029/2009GL038004","type":"doi","url":"http://dx.doi.org/10.1029/2009GL038004"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2009,"reportNumber":null,"title":"A 600-year annual 10Be record from the NGRIP ice core, Greenland. ","type":"publication","volume":null}],"reconstruction":"N","scienceKeywords":null,"site":[{"NOAASiteId":"20005","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":"12462","coreLengthMeters":3085,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>ice core>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/ngrip-10be.txt","linkText":"ngrip-10be.txt","urlDescription":"Data","variables":[{"cvAdditionalInfo":null,"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":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":"x1e4 atoms","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count","cvWhat":"chemical composition>isotope>single isotope concentration>10Be"},{"cvAdditionalInfo":"atoms per square centimeter per second","cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"count per square centimeter per second","cvWhat":"chemical composition>isotope>single isotope concentration>10Be"},{"cvAdditionalInfo":null,"cvDataType":"ICE CORES","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"hydrologic material>bulk ice","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"meter per year","cvWhat":"formation property>formation rate>accumulation rate"}]}],"dataTableName":"North GRIP Core 423","dataTableNotes":null,"earliestYear":1389,"earliestYearBP":561,"earliestYearCE":1389,"mostRecentYear":1995,"mostRecentYearBP":-45,"mostRecentYearCE":1995,"species":[],"timeUnit":"AD"}],"siteName":"North GRIP"}],"studyCode":null,"studyName":"North GRIP - 600 Year Annual 10Be Data","studyNotes":null,"version":"1.0","xmlId":"2902"}