{"xmlId":"2608","NOAAStudyId":"6278","studyName":"Briffa et al. 1992 Western North America Gridpoint and Regional Summer Temperature Reconstructions","doi":"https://doi.org/10.25921/66tx-1s53","uuid":"9ce22cc4-be67-429c-a80c-18448d5ced8c","dataPublisher":"NOAA","contactInfo":{"type":"CONTACT INFORMATION","shortName":"DOC/NOAA/NESDIS/NCEI","longName":"National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce ","address":"325 Broadway, E/NE31","city":"Boulder","state":"CO","postalCode":"80305-3328","country":"USA","dataCenterUrl":"https://www.ncei.noaa.gov/products/paleoclimatology","email":"paleo@noaa.gov","phone":"828-271-4800","fax":null,"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."},"dataType":"CLIMATE RECONSTRUCTIONS","investigators":"Briffa, K.R.; Jones, P.D.; Schweingruber, F.H.","investigatorDetails":[{"firstName":"Keith","lastName":"Briffa","initials":"K.R.","orcId":"0000-0003-3323-3639"},{"firstName":"Philip","lastName":"Jones","initials":"P.D.","orcId":"0000-0001-5032-5493"},{"firstName":"Fritz","lastName":"Schweingruber","initials":"F.H.","orcId":null}],"version":"1.0","funding":[],"studyNotes":"Reconstructions of summer temperatures at each of 24 grid point locations in the western U.S. and five regional reconstructions. As the 53-site reconstructions are better than those from the 23 sites a 1600-1982 series for any region should be derived from the 23 site reconstruction for 1600-1749 and the 53 site one for 1750-1982. °C anomalies relative to the 1951-70 base period.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/6278","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-recon-6278.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-recon-6278.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/climate-reconstruction","studyCode":null,"scienceKeywords":["Air Temperature Reconstruction"],"reconstruction":"Y","contributionDate":"2002-07-01","entryId":"noaa-recon-6278","earliestYearBP":350,"mostRecentYearBP":-33,"earliestYearCE":1600,"mostRecentYearCE":1983,"publication":[{"author":{"name":"Briffa, K.R., P.D. Jones, and F.H. Schweingruber"},"pubYear":1992,"title":"Tree-Ring Density Reconstructions of Summer Temperature Patterns across Western North America since 1600","journal":"Journal of Climate","volume":"5","edition":null,"issue":"7","pages":"735754","reportNumber":null,"citation":"Briffa, K.R., P.D. Jones, and F.H. Schweingruber. 1992. Tree-Ring Density Reconstructions of Summer Temperature Patterns across Western North America since 1600. Journal of Climate, 5(7), 735754. doi: 10.1175/1520-0442(1992)005<0735:TRDROS>2.0.CO;2","type":"publication","identifier":{"type":"doi","id":"10.1175/1520-0442(1992)005<0735:TRDROS>2.0.CO;2","url":"http://dx.doi.org/10.1175/1520-0442(1992)005<0735:TRDROS>2.0.CO;2"},"abstract":"Summer half-year (April-September) mean temperatures are reconstructed across western North America between 1600 and 1982. The reconstructions, ultimately in the form of gridpoint anomaly time series, are produced using a principal-components regression technique to relate variability in a network of up to 53 high-elevation maximum latewood-density chronologies to a number of important temperature principal-component amplitude series. The reconstructions are of good quality over the area between 35° and 55°N but are subject to large uncertainty north of 55°N, particularly prior to 1750. Four regional time series, the average of between two and six gridpoint seriesBritish Columbia and the Pacific Northwest, California, eastern Rockies and northern High Plains, and the Southwest desertsplus one more-extensive western United States series are presented and described. Examples of individual-year and decadal-mcan anomaly maps are illustrated, and the results of preliminary spectral analyses of the regional time series are described.","pubRank":"1"}],"site":[{"NOAASiteId":"56377","siteName":"Western North America","siteCode":null,"mappable":"N","locationName":"Continent>North America","geo":{"geoType":"Feature","geometry":{"type":"POLYGON","coordinates":["30","65","-150","-100"]},"properties":{"southernmostLatitude":"30","northernmostLatitude":"65","westernmostLongitude":"-150","easternmostLongitude":"-100","minElevationMeters":null,"maxElevationMeters":null}},"paleoData":[{"dataTableName":"Briffa1992","NOAADataTableId":"38380","earliestYear":1600,"mostRecentYear":1983,"timeUnit":"CE","earliestYearBP":350,"mostRecentYearBP":-33,"earliestYearCE":1600,"mostRecentYearCE":1983,"coreLengthMeters":null,"dataTableNotes":null,"species":[],"dataFile":[{"fileUrl":"https://www.ncei.noaa.gov/pub/data/paleo/treering/reconstructions/westnamerica/briffa1992/briffa1992.txt","urlDescription":"Data","linkText":"briffa1992.txt","variables":[{"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvWhat":"age variable>age","cvMaterial":null,"cvError":null,"cvUnit":"time unit>age unit>year Common Era","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvWhat":"earth system variable>temperature variable>temperature>air temperature>surface air temperature","cvMaterial":"reconstruction material>physical measurement>ring density","cvError":null,"cvUnit":"temperature unit>degree Celsius","cvSeasonality":"6-month period>Apr-Sep","cvDetail":"anomalized","cvMethod":"computational method>statistical analysis method>principal component analysis|computational method>statistical analysis method>regression analysis","cvAdditionalInfo":"based on latewood density; reference period: 1951-1970 A.D.; calibration data set: Jones et al. 1986; principal components regression","cvFormat":"Numeric","cvShortName":null},{"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvWhat":"sampling metadata>latitude","cvMaterial":null,"cvError":null,"cvUnit":"angle unit>degree>degree north","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null},{"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvWhat":"sampling metadata>longitude","cvMaterial":null,"cvError":null,"cvUnit":"angle unit>degree>degree east","cvSeasonality":null,"cvDetail":null,"cvMethod":null,"cvAdditionalInfo":null,"cvFormat":"Numeric","cvShortName":null}],"NOAAKeywords":["earth science>paleoclimate>reconstructions"]}]}]}],"reference":{"pastThesaurusSkos":"https://www.ncei.noaa.gov/access/paleo-search/skos/past-thesaurus.rdf","pastThesaurusExplorer":"https://www.ncei.noaa.gov/access/paleo-search/cvterms","gcmdKeywordThesaurus":"https://earthdata.nasa.gov/earth-observation-data/find-data/idn/gcmd-keywords"},"dataLicenseDescription":null,"dataLicenseUrl":null}