{"NOAAStudyId":"16577","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":"2013-12-04","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-16577.xml","doi":"https://doi.org/10.25921/29cy-gz24","earliestYearBP":506,"earliestYearCE":1444,"entryId":"noaa-tree-16577","funding":[],"investigators":"Colenutt, M.; Colenutt, R.; Luckman, B.H.","mostRecentYearBP":-40,"mostRecentYearCE":1990,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/16577","originalSource":null,"publication":[{"abstract":"Ring-width chronologies have been developed for alpine larch (Larixlyallii Pari.) at six tree-line sites in the Banff-Kananaskis area of the southern Canadian Rockies. Evaluation of all chronologies confirms that alpine larch ring-width series have higher mean sensitivities, lower autocorrelation, and greater common variance than series from other tree species growing at tree line in this area. Missing and very narrow rings created cross-dating difficulties at all sites but were most problematic for the sites along the Continental Divide. Up to 1% of the rings were missing from entire chronologies, but for specific years, up to 77% of the rings were missing at one site. Marker (narrow) rings were present at all sites for the years 1610, 1654, 1715, 1720, 1723, 1752, 1799, 1824, 1842, 1844, 1915, 1925, 1951, and 1971. Tree growth rates were reduced for the periods 1675-1710, 1815-1850, and 1960-1978 whereas increased growth occurred during 1650-1680, 1750-1800, 1850-1900, and 1920-1950. The only factor that could affect all sites over such a broad geographic area is climate. Principal components analysis indicated that the first eigenvector derived from the six chronologies accounted for 70.7% of their common variance and the first three components accounted for 91.6%. The high correlation between the six first principal component and standard chronologies suggested that either method may be used for standardizing tree-ring data from alpine larch.","author":{"name":"M.E. Colenutt, B.H. Luckman"},"citation":"M.E. Colenutt, B.H. Luckman. 1995. The dendrochronological characteristics of alpine Larch. Canadian Journal of Forest Research, 25(5), 777-789. doi: 10.1139/x95-085","edition":null,"identifier":{"id":"10.1139/x95-085","type":"doi","url":"http://dx.doi.org/10.1139/x95-085"},"issue":"5","journal":"Canadian Journal of Forest Research","pages":"777-789","pubRank":"1","pubYear":1995,"reportNumber":null,"title":"The dendrochronological characteristics of alpine Larch","type":"publication","volume":"25"}],"reconstruction":"N","scienceKeywords":["subalpine larch","LALY","Larix lyallii Parl."],"site":[{"NOAASiteId":"55963","geo":{"geoType":"Feature","geometry":{"coordinates":["51.0667","-115.7833"],"type":"POINT"},"properties":{"easternmostLongitude":"-115.7833","maxElevationMeters":"2250","minElevationMeters":"2250","northernmostLatitude":"51.0667","southernmostLatitude":"51.0667","westernmostLongitude":"-115.7833"}},"locationName":"Continent>North America>Canada>Alberta","mappable":"Y","paleoData":[{"NOAADataTableId":"26749","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/correlation-stats/cana421.txt","linkText":"cana421.txt","urlDescription":"Correlation Stats","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana421.rwl","linkText":"cana421.rwl","urlDescription":"Raw Measurements","variables":[{"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"},{"cvAdditionalInfo":"units are 0.01 mm if end-of-series marker is 999 and 0.001 mm if end-of-series marker is -9999","cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"millimeter","cvWhat":"physical property>length>total ring width"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>density>maximum density"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana421x.rwl","linkText":"cana421x.rwl","urlDescription":"Raw Measurements","variables":[{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":null,"cvUnit":"gram per decimeter","cvWhat":"physical property>density>maximum density"},{"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"}]},{"NOAAKeywords":["earth science>paleoclimate>tree-ring>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana421x-noaa.rwl","linkText":"cana421x-noaa.rwl","urlDescription":"Raw Measurements - NOAA Template File","variables":[{"cvAdditionalInfo":null,"cvDataType":"TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":null,"cvShortName":"age_CE","cvUnit":"year Common Era","cvWhat":"age variable>age"},{"cvAdditionalInfo":"Tree ID: Set  1; 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NOAA Template Raw Measurements file added 2019-01-27. NOAA Template Raw Measurements file added 2019-02-04.","version":"1.0","xmlId":"14283"}