{"NOAAStudyId":"15070","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":"2013-09-13","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-15070.xml","doi":null,"earliestYearBP":950,"earliestYearCE":1000,"entryId":"noaa-recon-15070","funding":[{"fundingAgency":"California Department of Water Resources","fundingGrant":"4600008850"},{"fundingAgency":"US Bureau of Reclamation","fundingGrant":"R11AP81457"}],"investigators":"Malevich, S.B.; Woodhouse, C.A.; Meko, D.M.","mostRecentYearBP":-60,"mostRecentYearCE":2010,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/15070","originalSource":null,"publication":[{"abstract":"This work presents the first tree-ring reconstructions of hydroclimate for the Upper Klamath River basin, which stretches from northern California into southern Oregon. The extended record provides a centuries-long perspective on the region’s hydroclimatic variability and context for water-related political issues that have erupted in recent years. Reconstructions of water-year precipitation for Klamath Falls, Oregon (extending 1564-2004 and 1000-2010 CE) were developed to compare past drought severity with drought severity of the instrumental record (extending 1896-2011). The reconstructions suggest that variability exhibited during the instrumental period captures extremes of moderate-to-long-duration (6-, 10-, and 20-year) droughts, but not of short (single-year and 3-year) and very long (50-year) droughts, which were more severe during the 11th-13th centuries. The late-16th-century “mega drought” is present in the Klamath River basin, though with less strength than in the neighboring Sacramento River basin. Cool-season storm tracks appear to be a direct driver of hydroclimatic variability, leading to instances of see-saw like relationships with neighboring regions, such as in the mid-14th century. In contrast, the larger area of drought in the 12th century is suggestive of a long-term northward shift in cool-season storm tracks.","author":null,"citation":"Steven B. Malevich, Connie A. Woodhouse, and David M. Meko. 2013. Tree-ring reconstructed hydroclimate of the Upper Klamath basin. Journal of Hydrology, Vol. 495, pp. 13-22, 12 July 2013. DOI: 10.1016/j.jhydrol.2013.04.048","edition":null,"identifier":{"id":"10.1016/j.jhydrol.2013.04.048","type":"doi","url":"http://dx.doi.org/10.1016/j.jhydrol.2013.04.048"},"issue":null,"journal":"Journal of Hydrology","pages":null,"pubRank":"1","pubYear":2013,"reportNumber":null,"title":"Tree-ring reconstructed hydroclimate of the Upper Klamath basin","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction","hydrology","precipitation"],"site":[{"NOAASiteId":"55430","geo":{"geoType":"Feature","geometry":{"coordinates":["42.2008","-121.7814"],"type":"POINT"},"properties":{"easternmostLongitude":"-121.7814","maxElevationMeters":"1249","minElevationMeters":"1249","northernmostLatitude":"42.2008","southernmostLatitude":"42.2008","westernmostLongitude":"-121.7814"}},"locationName":"Continent>North America>United States Of America>Oregon","mappable":"Y","paleoData":[{"NOAADataTableId":"25078","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/usa/klamath2013precip.txt","linkText":"klamath2013precip.txt","urlDescription":"Data","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":"17 chronology predictors","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual>Oct-Sep","cvShortName":null,"cvUnit":"centimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":"3 chronology predictors","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual>Oct-Sep","cvShortName":null,"cvUnit":"centimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"INSTRUMENTAL","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual>Oct-Sep","cvShortName":null,"cvUnit":"centimeter","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"}]}],"dataTableName":"Klamath2013precip","dataTableNotes":null,"earliestYear":1000,"earliestYearBP":950,"earliestYearCE":1000,"mostRecentYear":2010,"mostRecentYearBP":-60,"mostRecentYearCE":2010,"species":[],"timeUnit":"AD"}],"siteName":"Klamath Falls"}],"studyCode":null,"studyName":"Upper Klamath River Basin 1000 Year Precipitation Reconstructions","studyNotes":"Updated reconstructed water year (WY; October-September) Klamath Falls precipitation (cm yr^-1).\nThe reconstructions archived here are updated versions of those used in Malevich et al. 2013.\n(There were some weakly dated series that were unintentionally included in the original - the resulting changes are minor). \n\nKlamath Falls, Oregon water-year precipitation is adopted as a proxy for Upper Klamath basin streamflow and hydroclimate.\nKlamath Falls precipitation was reconstructed using stepwise multiple linear regression. Two models were created. \nOne model, \"kfalls1\", was trained using the entire available pool of chronology predictors, whose common time period \nis 1600-2003. A second model, \"kfalls2\", was trained with three chronologies whose common period is 1000-2010. \nIn this manner, one model emphasizes predictive performance (larger and presumably more robust predictor set) \nwhile the other model emphasizes length of reconstruction.\n\nUpdated tree ring chronologies utilized in this study are included in the International Tree Ring Data Bank (ITRDB): \nhttp://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/tree-ring\nThe ITRDB codes are CA674-CA679 and OR092-OR095. ","version":"1.0","xmlId":"12912"}