{"NOAAStudyId":"6224","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":"1998-06-04","dataPublisher":"NOAA","dataType":"CLIMATE RECONSTRUCTIONS","dataTypeInformation":"https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/climate-reconstruction","difMetadataLink":"http://www1.ncdc.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-6224.xml","doi":null,"earliestYearBP":550,"earliestYearCE":1400,"entryId":"noaa-recon-6224","funding":[],"investigators":"Briffa, K.R.; Jones, P.D.; Schweingruber, F.H.; Osborn, T.J.","mostRecentYearBP":-44,"mostRecentYearCE":1994,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/6224","originalSource":null,"publication":[],"reconstruction":"Y","scienceKeywords":["Air Temperature Reconstruction"],"site":[{"NOAASiteId":"37340","geo":{"geoType":"Feature","geometry":{"coordinates":["0","90","180","180"],"type":"POINT"},"properties":{"easternmostLongitude":"180","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"90","southernmostLatitude":"0","westernmostLongitude":"180"}},"locationName":"Geographic Region>Northern Hemisphere","mappable":"N","paleoData":[{"NOAADataTableId":"19452","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/n_hem_temp/nhemtemp_data.txt","linkText":"Northern Hemisphere Temperature Reconstructions","urlDescription":"Data File","variables":[{"cvAdditionalInfo":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"based on latewood density; reference period: 1881-1960 A.D.; calibration data set: Jones et al. 1992; simple linear regression","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":"anomalized","cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring density","cvMethod":"regression analysis","cvSeasonality":"6-month period>Apr-Sep","cvShortName":null,"cvUnit":"degree Celsius","cvWhat":"earth system variable>temperature variable>temperature>air temperature>surface air temperature"},{"cvAdditionalInfo":"One-stage average of Northern Hemisphere maximum latewood density tree-ring chronologies","cvDataType":"TREE RING","cvDetail":"composited","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"statistical variable>proxy composite>tree ring standardized growth index"},{"cvAdditionalInfo":"Two-stage average of Northern Hemisphere maximum latewood density tree-ring chronologies","cvDataType":"TREE RING","cvDetail":"composited","cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":null,"cvWhat":"statistical variable>proxy composite>tree ring standardized growth index"}]}],"dataTableName":"PCN - briffa1998","dataTableNotes":null,"earliestYear":1400,"earliestYearBP":550,"earliestYearCE":1400,"mostRecentYear":1994,"mostRecentYearBP":-44,"mostRecentYearCE":1994,"species":[],"timeUnit":"AD"}],"siteName":"Northern Hemisphere - briffa1998"}],"studyCode":null,"studyName":"Briffa et al. 1998 Northern Hemisphere Temperature Reconstructions","studyNotes":"The data consists of two timeseries representative of Northern Hemisphere \ngrowing season temperatures for the period 1400-1994, derived from means of \n383 maximum latewood density chronologies from the northern Boreal forest.  \nBoth series are given in dimensionless standardised anomalies, and one has \nalso been rescaled to give an estimate of Northern Hemisphere land and marine\ntemperature anomalies.\n\nORIGINAL REFERENCE:\nBriffa K.R., P.D. Jones, F.H. Schweingruber and T.J. Osborn (1998)\nInfluence of volcanic eruptions on Northern Hemisphere summer temperature\nover the past 600 years. Nature 393, 450-455.","version":"1.0","xmlId":"2479"}