{"xmlId":"69278","NOAAStudyId":"28577","studyName":"Gut - Sool-Hohwald - PCAB - ITRDB SWIT375","doi":"https://doi.org/10.25921/s6z3-jd46","uuid":"0a9b3ddb-70bf-4374-97d7-20fa102e9289","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":"TREE RING","investigators":"Gut, U.","investigatorDetails":[{"firstName":"Urs","lastName":"Gut","initials":"U.","orcId":null}],"version":"1.0","funding":[{"fundingAgency":"Swiss National Science Foundation","fundingGrant":"P0ZHP1_162299"}],"studyNotes":"dendro-provenance study NOAA Template Raw Measurements file added 2020-03-09.","onlineResourceLink":"https://www.ncei.noaa.gov/access/paleo-search/study/28577","difMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/dif/xml/noaa-tree-28577.xml","isoMetadataLink":"https://www.ncei.noaa.gov/pub/data/metadata/published/paleo/iso/xml/noaa-tree-28577.xml","originalSource":null,"dataTypeInformation":"https://www.ncei.noaa.gov/products/paleoclimatology/tree-ring","studyCode":"SWIT375","scienceKeywords":["Norway spruce","PCAB","Picea abies (L.) H. Karst."],"reconstruction":"N","contributionDate":"2019-12-17","entryId":"noaa-tree-28577","earliestYearBP":53,"mostRecentYearBP":-66,"earliestYearCE":1897,"mostRecentYearCE":2016,"publication":[{"author":{"name":"Urs Gut"},"pubYear":2018,"title":"Evaluating the key assumptions underlying dendro-provenancing: How to spruce it up with a scissor plot","journal":"Dendrochronologia","volume":"52","edition":null,"issue":null,"pages":"131-145","reportNumber":null,"citation":"Urs Gut. 2018. Evaluating the key assumptions underlying dendro-provenancing: How to spruce it up with a scissor plot. Dendrochronologia, 52, 131-145. doi: 10.1016/j.dendro.2018.09.008","type":"publication","identifier":{"type":"doi","id":"10.1016/j.dendro.2018.09.008","url":"http://dx.doi.org/10.1016/j.dendro.2018.09.008"},"abstract":"The pairwise statistical comparison of ring-width series is the basic analysis of dendro-provenancing studies. It is assumed that statistical proximity indicates similar provenance, but this assumption often remains untested. Especially for small areas with high topographic complexity, it is unknown to what extent statistical proximity and geographical provenance are correlated.\r\n\r\nIn this paper, dendro-provenancing is framed as a search for statistical Nearest Neighbors. The 'k-Nearest Neighbors leave one-out cross-validation' process (k-NN) is proposed as a method for validating dendro-provenancing approaches. Furthermore, it allows researchers to consistently compare and evaluate different proximity measures with respect to their suitability for dendro-provenancing. The validation process is demonstrated on a data set of 401 ring-width series of Norway spruce (Picea abies (L.) H. Karst.) encompassing 15 sites along elevational gradients in north-eastern Switzerland. Moreover, a new type of plot, the so-called scissor plot, is introduced to visualize the k-NN validation process.\r\n\r\nResults indicate that dendro-provenancing depends heavily on differences in between sites high-frequency signal. Mean classification success for the relevant stages of the k-NN (CSRopen) ranged from 71.8% to 79.2% for the best performing measures. Classification errors occurred mainly between sites at elevations of 1000-1198 m a.s.l. At all other elevations and between different regions of the study area, only moderate differences in classification performance were detected. Thus, the results indicate that dendro-provenancing may be principally feasible even in a small region as studied here.","pubRank":"1"}],"site":[{"NOAASiteId":"58212","siteName":"Sool-Hohwald","siteCode":null,"mappable":"Y","locationName":"Continent>Europe>Western Europe>Switzerland","geo":{"geoType":"Feature","geometry":{"type":"POINT","coordinates":["47.00433","9.10381"]},"properties":{"southernmostLatitude":"47.00433","northernmostLatitude":"47.00433","westernmostLongitude":"9.10381","easternmostLongitude":"9.10381","minElevationMeters":"1022","maxElevationMeters":"1022"}},"paleoData":[{"dataTableName":"SWIT375","NOAADataTableId":"40844","earliestYear":1897,"mostRecentYear":2016,"timeUnit":"CE","earliestYearBP":53,"mostRecentYearBP":-66,"earliestYearCE":1897,"mostRecentYearCE":2016,"coreLengthMeters":null,"dataTableNotes":null,"species":[{"speciesCode":"PCAB","scientificName":"Picea abies (L.) H. 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