{"NOAAStudyId":"14248","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":"2013-04-16","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-14248.xml","doi":null,"earliestYearBP":420,"earliestYearCE":1530,"entryId":"noaa-recon-14248","funding":[{"fundingAgency":"US National Science Foundation","fundingGrant":"0823090"},{"fundingAgency":"US NOAA","fundingGrant":"NA08OAR4310727"},{"fundingAgency":"US Environmental Protection  Agency","fundingGrant":"FP917185"}],"investigators":"Griffin, D.; Woodhouse, C.A.; Meko, D.M.; Stahle, D.W.; Faulstich, H.L.; Carrillo, C.; Touchan, R.; Castro, C.L.; Leavitt, S.W.","mostRecentYearBP":-58,"mostRecentYearCE":2008,"onlineResourceLink":"https://www.ncdc.noaa.gov/paleo/study/14248","originalSource":null,"publication":[{"abstract":"The North American monsoon is a major focus of modern and paleoclimate research, but relatively little is known about interannual- to decadal-scale monsoon moisture variability in the pre-instrumental era. This study draws from a new network of subannual tree-ring latewood width chronologies and presents a 470-year reconstruction of monsoon (June-August) standardized precipitation for southwestern North America. Comparison with an independent reconstruction of cool-season (October-April) standardized precipitation indicates that southwestern decadal droughts of the last five centuries were characterized not only by cool-season precipitation deficits but also by concurrent failure of the summer monsoon. Monsoon drought events identified in the past were more severe and persistent than any of the instrumental era. The relationship between winter and summer precipitation is weak, at best, and not time stable. Years with opposing-sign seasonal precipitation anomalies, as noted by other studies, were anomalously frequent during the mid to late 20th century.","author":null,"citation":"Daniel Griffin, Connie A. Woodhouse, David M. Meko, David W. Stahle, Holly L. Faulstich, Carlos Carrillo, Ramzi Touchan, Christopher L. Castro, and Steven W. Leavitt. 2013.\r\nNorth American monsoon precipitation reconstructed from tree-ring latewood.  \r\nGeophysical Research Letters, Vol. 40. DOI: 10.1002/grl.50184","edition":null,"identifier":{"id":"10.1002/grl.50184","type":"doi","url":"http://dx.doi.org/10.1002/grl.50184"},"issue":null,"journal":"Geophysical Research Letters","pages":null,"pubRank":"1","pubYear":2013,"reportNumber":null,"title":"North American monsoon precipitation reconstructed from tree-ring latewood","type":"publication","volume":null}],"reconstruction":"Y","scienceKeywords":["Precipitation Reconstruction","precipitation","Monsoon"],"site":[{"NOAASiteId":"54749","geo":{"geoType":"Feature","geometry":{"coordinates":["30","35","-113.25","-107.75"],"type":"POLYGON"},"properties":{"easternmostLongitude":"-107.75","maxElevationMeters":null,"minElevationMeters":null,"northernmostLatitude":"35","southernmostLatitude":"30","westernmostLongitude":"-113.25"}},"locationName":"Continent>North America","mappable":"N","paleoData":[{"NOAADataTableId":"24255","coreLengthMeters":null,"dataFile":[{"NOAAKeywords":["earth science>paleoclimate>reconstructions>precipitation"],"fileUrl":"https://www1.ncdc.noaa.gov/pub/data/paleo/treering/reconstructions/northamerica/nam2precip2013.txt","linkText":"nam2precip2013.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":"based on latewood width","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"7-month period>Oct-Apr","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":"based on latewood width","cvDataType":"CLIMATE RECONSTRUCTIONS|TREE RING","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":"reconstruction material>physical measurement>ring width","cvMethod":null,"cvSeasonality":"3-month period>Jun-Aug","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"INSTRUMENTAL","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"7-month period>Oct-Apr","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"},{"cvAdditionalInfo":null,"cvDataType":"INSTRUMENTAL","cvDetail":null,"cvError":null,"cvFormat":"Numeric","cvMaterial":null,"cvMethod":null,"cvSeasonality":"3-month period>Jun-Aug","cvShortName":null,"cvUnit":"standard deviation unit","cvWhat":"earth system variable>hydroclimatic variable>hydroclimate rate>precipitation"}]}],"dataTableName":"NAM2SPI2013","dataTableNotes":null,"earliestYear":1530,"earliestYearBP":420,"earliestYearCE":1530,"mostRecentYear":2008,"mostRecentYearBP":-58,"mostRecentYearCE":2008,"species":[],"timeUnit":"AD"}],"siteName":"North American Monsoon Experiment Region 2"}],"studyCode":null,"studyName":"North American Monsoon 470-Year Subannual Precipitation Index Reconstructions","studyNotes":"Southwestern North America monsoon (June-August) precipitation reconstruction, based on a multispecies tree\nring latewood width chronology network. Target region for the reconstructions is monsoon region 2 (NAM2), \nas defined by the North American Monsoon Experiment Forecast Forum (30-35N, 107.75-113.25W). Monthly \nprecipitation data are from a 0.5 degree gridded product developed by NOAA. NAM2 grid point data were \naveraged to produce time series of monthly precipitation and correlation analysis was used to assess \nrelationships to the subannual tree-ring chronologies. October-April (cool season) and June-August (monsoon) \nwere selected as the seasons for reconstruction, and precipitation totals for these seasons were converted to \nstandardized precipitation indices (SPI).","version":"1.0","xmlId":"12249"}