{"NOAAStudyId":"22070","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":"2017-05-09","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-22070.xml","doi":null,"earliestYearBP":379,"earliestYearCE":1571,"entryId":"noaa-recon-22070","funding":[{"fundingAgency":"US National  Center for Atmospheric Research (NCAR)","fundingGrant":null},{"fundingAgency":"US NOAA","fundingGrant":"Postdoc Applying Climate Expertise (PACE)"}],"investigators":"Lehner, F.; Wahl, E.R.; Wood, A.W.; Blatchford, D.B.; Llewellyn, D.","mostRecentYearBP":-65,"mostRecentYearCE":2015,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/22070","originalSource":null,"publication":[{"abstract":"Recent decades have seen strong trends in hydroclimate over the American Southwest, with major river basins such as the Rio Grande exhibiting intermittent drought and declining runoff efficiencies. The extent to which these observed trends are exceptional has implications for current water management and seasonal streamflow forecasting practices. We present a new reconstruction of runoff ratio for the Upper Rio Grande basin back to 1571 CE, which provides evidence that the declining trend in runoff ratio from the 1980s to present-day is unprecedented in context of the last 445 years. Though runoff ratio is found to vary primarily in proportion to precipitation, the reconstructions suggest a secondary influence of temperature. In years of low precipitation, very low runoff ratios are made 2.5-3 times more likely by high temperatures. This temperature sensitivity appears to have strengthened in recent decades, implying future water management vulnerability should recent warming trends in the region continue.","author":{"name":"Flavio Lehner, Eugene R. Wahl, Andrew W. Wood, Douglas B. Blatchford, Dagmar Llewellyn"},"citation":"Flavio Lehner, Eugene R. Wahl, Andrew W. Wood, Douglas B. Blatchford, Dagmar Llewellyn. 2017. Assessing recent declines in Upper Rio Grande runoff efficiency from a paleoclimate perspective. Geophysical Research Letters. . doi: 10.1002/2017GL073253","edition":null,"identifier":{"id":"10.1002/2017GL073253","type":"doi","url":"http://dx.doi.org/10.1002/2017GL073253"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2017,"reportNumber":null,"title":"Assessing recent declines in Upper Rio Grande runoff efficiency from a paleoclimate perspective","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction","Streamflow Reconstruction"],"site":[{"NOAASiteId":"57193","geo":{"geoType":"Feature","geometry":{"coordinates":["35.8747","-106.1414"],"type":"POINT"},"properties":{"easternmostLongitude":"-106.1414","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"35.8747","southernmostLatitude":"35.8747","westernmostLongitude":"-106.1414"}},"locationName":"Continent>North America>United States Of America>New Mexico","mappable":"Y","paleoData":[{"NOAADataTableId":"33196","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation","earth science>paleoclimate>reconstructions>streamflow"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/newmexico/lehner2017riogrande-readme.txt","linkText":"Lehner et al. 2017 Readme File","urlDescription":"Data Description","variables":[]},{"NOAAKeywords":["earth science>paleoclimate>reconstructions>streamflow"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/newmexico/lehner2017riogrande-flow.txt","linkText":"1000 Member Ensemble of Streamflow Reconstructions","urlDescription":"Comma-delimited Text Data File","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":"units are 1000s of acre feet","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"ensemble member","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual","cvShortName":null,"cvUnit":"acre foot","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>streamflow"}]},{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/newmexico/lehner2017riogrande-precip.txt","linkText":"1000 Member Ensemble of Precipitation Reconstructions","urlDescription":"Comma-delimited Text Data File","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":"units are 1000s of acre feet","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"ensemble member","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual","cvShortName":null,"cvUnit":"acre foot","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"}]},{"NOAAKeywords":["earth science>paleoclimate>reconstructions>streamflow"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/newmexico/lehner2017riogrande-runoff.txt","linkText":"1000 Member Ensemble of Runoff Ratio Reconstructions","urlDescription":"Comma-delimited Text Data File","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":null,"cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":"ensemble member","cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"annual","cvShortName":null,"cvUnit":"dimensionless","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate ratio>runoff coefficient"}]}],"dataTableName":"Lehner2017SFE","dataTableNotes":null,"earliestYear":1571,"earliestYearBP":379,"earliestYearCE":1571,"mostRecentYear":2015,"mostRecentYearBP":-65,"mostRecentYearCE":2015,"species":[],"timeUnit":"AD"}],"siteName":"Otowi Bridge"}],"studyCode":null,"studyName":"Upper Rio Grande 445 Year Runoff Efficiency Reconstructions","studyNotes":"Tree-ring based ensemble reconstructions of upper Rio Grande streamflow, precipitation, and runoff efficiency at Otowi Bridge, New Mexico, since 1571 CE. 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