{"NOAAStudyId":"22121","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":"2017-05-24","dataPublisher":"NOAA","dataType":"TREE RING","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-22121.xml","doi":"https://doi.org/10.25921/yaky-mg19","earliestYearBP":1000,"earliestYearCE":950,"entryId":"noaa-tree-22121","funding":[{"fundingAgency":"Natural Sciences and Engineering Research Council of Canada","fundingGrant":null},{"fundingAgency":"Swedish Research Council ","fundingGrant":null}],"investigators":"Edwards, T.W.D.; Hammarlund, D.; Newton, B.W.; Sjolte, J.; Linderson, H.; Sturm, C.; St. Amour, N.A.; Bailey, J.N.-L.; Nilsson, A.L.","mostRecentYearBP":-55,"mostRecentYearCE":2005,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22121","originalSource":null,"publication":[{"abstract":"Here we report new reconstructions of winter temperature and summer moisture during the past millennium in southeastern Sweden, based on stable-isotope data from a composite tree-ring sequence, that further enhances our knowledge and understanding of seasonal climate variability in the Northern Hemisphere over the past millennium. Key features of these new climate proxy records include evidence for distinctive fluctuations in winter temperature in SE Sweden, superimposed upon the general pattern of cooling between the so-called Medieval Climate Anomaly (MCA) of the early millennium and the Little Ice Age (LIA) of the late millennium, as well as evidence for sustained summer wetness during the MCA, followed by drier and less variable conditions during the LIA. We also explore these new records within a circumpolar spatial context by employing self-organizing map analysis of meteorological reanalysis data to identify potential modern analogues of mid-tropospheric synoptic circulation types in the Northern Hemisphere extratropics that can reconcile varying seasonal climate states during the MCA and LIA in SE Sweden with less variable conditions in southwestern Canada, as portrayed by paleoclimate records developed in the same manner in an earlier study.","author":{"name":"Thomas W.D. Edwards, Dan Hammarlund, Brandi W. Newton, Jesper Sjolte, Hans Linderson, Christophe Sturm, Natalie A. St. Amour, Joscelyn N.-L. Bailey, Anders L. Nilsson"},"citation":"Thomas W.D. Edwards, Dan Hammarlund, Brandi W. Newton, Jesper Sjolte, Hans Linderson, Christophe Sturm, Natalie A. St. Amour, Joscelyn N.-L. Bailey, Anders L. Nilsson. 2017. Seasonal variability in Northern Hemisphere atmospheric circulation during the Medieval Climate Anomaly and the Little Ice Age. Quaternary Science Reviews, 165, 102-110. doi: 10.1016/j.quascirev.2017.04.018","edition":null,"identifier":{"id":"10.1016/j.quascirev.2017.04.018","type":"doi","url":"http://dx.doi.org/10.1016/j.quascirev.2017.04.018"},"issue":null,"journal":"Quaternary Science Reviews","pages":"102-110","pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Seasonal variability in Northern Hemisphere atmospheric circulation during the Medieval Climate Anomaly and the Little Ice Age","type":"publication","volume":"165"}],"reconstruction":"Y","scienceKeywords":null,"site":[{"NOAASiteId":"57205","geo":{"geoType":"Feature","geometry":{"coordinates":["57","59","14","16"],"type":"POLYGON"},"properties":{"easternmostLongitude":"16","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"59","southernmostLatitude":"57","westernmostLongitude":"14"}},"locationName":"Continent>Europe>Northern Europe>Scandanavia>Sweden","mappable":"N","paleoData":[{"NOAADataTableId":"33253","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>oxygen isotopes","earth science>paleoclimate>tree-ring>carbon isotopes"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/isotope/europe/sweden/se-sweden2017iso.txt","linkText":"SE Sweden Tree-Ring Isotopes, Temperature, and Relative Humidity","urlDescription":"Formatted Text Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":"normalized","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 13C","cvMethod":null,"cvSeasonality":"1-month period>Feb","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>temperature variable>temperature>surface temperature"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":"normalized","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 18O","cvMethod":null,"cvSeasonality":"1-month period>Feb","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>temperature variable>temperature>surface temperature"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":"normalized","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 13C","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate ratio>relative humidity"},{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":"normalized","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>isotope ratio>delta 18O","cvMethod":null,"cvSeasonality":"1-month period>Jun","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate ratio>relative humidity"},{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>age at sample start"},{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age>age at sample end"},{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>cellulose","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VSMOW","cvWhat":"chemical composition>isotope>isotope ratio>delta 18O"},{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>cellulose","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"},{"cvAdditionalInfo":"corrected for changing d13C of atmospheric CO2 post-1850","cvDataType":"TREE RING","cvDetail":"corrected","cvError":null,"cvFormat":"Numeric","cvMaterial":"chemical composition>compound>organic compound>organooxygen compound>cellulose","cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"per mil VPDB","cvWhat":"chemical composition>isotope>isotope ratio>delta 13C"}]}],"dataTableName":"SESweden2017iso","dataTableNotes":null,"earliestYear":950,"earliestYearBP":1000,"earliestYearCE":950,"mostRecentYear":2005,"mostRecentYearBP":-55,"mostRecentYearCE":2005,"species":[],"timeUnit":"AD"}],"siteName":"Southeast Sweden"}],"studyCode":"IITRDB18","studyName":"Southeast Sweden 1,000 Year Tree-Ring Isotopes and Climate Reconstructions","studyNotes":"Pinus sylvestris tree-ring stable isotope (d13C and d18O) data from southeastern Sweden for the past 1,000 years, plus reconstructed winter temperature and summer relative humidity. \r\nIITRDB18","version":"1.0","xmlId":"20114"}