{"NOAAStudyId":"15443","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":"2013-11-01","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-15443.xml","doi":"https://doi.org/10.25921/6j0p-sh03","earliestYearBP":225,"earliestYearCE":1725,"entryId":"noaa-tree-15443","funding":[],"investigators":"Colenutt, M.; Luckman, B.H.","mostRecentYearBP":-36,"mostRecentYearCE":1986,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/15443","originalSource":null,"publication":[{"abstract":"Tree-ring chronologies have been developed for alpine larch (Larixlyallii Parl.), alpine fir (Abieslasiocarpa (Hook.) Nutt.), and Engelmann spruce (Piceaengelmannii Parry) for a tree-line site at Larch Valley in Banff National Park. The alpine larch and alpine fir chronologies are the first published chronologies developed for these species in the Canadian Cordillera. Alpine larch, a deciduous conifer, has many very narrow and missing rings, making chronology development difficult. These problems were resolved by identifying common marker rings among species growing at the same site. Chronologies for all three species show suppressed growth in the early to mid 1800s followed by a period of higher growth that peaked in the early to mid 20th century and has since declined. The exact timing and nature of response to favourable and unfavourable growth conditions vary with species. Alpine larch exhibits the highest sensitivity, lowest first-order autocorrelation, and greatest common variance, suggesting it has excellent potential as a source of proxy climate data for tree-line sites in this area. Preliminary correlations between Lake Louise climate data and larch ring-width and maximum latewood density chronologies show that there are significant correlations with summer temperature variables. Engelmann spruce and alpine fir growing at the same site show a similar response but are more strongly influenced by precipitation and growing conditions of the previous year.","author":{"name":"M. E. Colenutt, B. H. Luckman "},"citation":"M. E. Colenutt, B. H. Luckman. 1991. Dendrochronological investigation of Larix lyallii at Larch Valley, Alberta. Canadian Journal of Forest Research, 21(8), 1222-1233. doi: 10.1139/x91-171","edition":null,"identifier":{"id":"10.1139/x91-171","type":"doi","url":"http://dx.doi.org/10.1139/x91-171"},"issue":"8","journal":"Canadian Journal of Forest Research","pages":"1222-1233","pubRank":"1","pubYear":1991,"reportNumber":null,"title":"Dendrochronological investigation of Larix lyallii at Larch Valley, Alberta","type":"publication","volume":"21"}],"reconstruction":"N","scienceKeywords":["Abies lasiocarpa (Hook.) Nutt.","corkbark fir","subalpine fir","ABLA"],"site":[{"NOAASiteId":"54426","geo":{"geoType":"Feature","geometry":{"coordinates":["51.35","-116.2167"],"type":"POINT"},"properties":{"easternmostLongitude":"-116.2167","maxElevationMeters":"2200","minElevationMeters":"2200","northernmostLatitude":"51.35","southernmostLatitude":"51.35","westernmostLongitude":"-116.2167"}},"locationName":"Continent>North America>Canada>Alberta","mappable":"Y","paleoData":[{"NOAADataTableId":"25368","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/cana373.txt","linkText":"cana373.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/cana373.rwl","linkText":"cana373.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>width>ring width"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/measurements/northamerica/canada/cana373-noaa.rwl","linkText":"cana373-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: LF710E; 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