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dc.contributor.authorGray, S. T.
dc.contributor.authorBetancourt, J. L.
dc.contributor.authorFastie, C. L.
dc.contributor.authorJackson, Stephen T.
dc.contributor.authorGray, S. T.
dc.contributor.authorBetancourt, J. L.
dc.contributor.authorFastie, C. L.
dc.contributor.authorJackson, Stephen T.
dc.date2003-03-26
dc.date.accessioned2018-06-10T20:54:21Z
dc.date.available2018-06-10T20:54:21Z
dc.description.abstractTree-ring records spanning the past seven centuries from the central and southern Rocky Mountains were studied using wavelet analysis to examine multidecadal (>30-70 yr) patterns of drought variation. Fifteen tree-ring series were grouped into five regional composite chronologies based on shared low-frequency behavior. Strong multidecadal phasing of moisture variation was present in all regions during the late 16th century megadrought. Oscillatory modes in the 30-70 yr domain persisted until the mid-19th century in two regions, and wet-dry cycles were apparently synchronous at some sites until the 1950s drought. The 16th/17th century pattern of severe multidecadal drought followed by decades of wet conditions resembles the 1950s drought and post-1976 wet period. The 16th century megadrought, which may have resulted from coupling of a decadal (similar to 20-30 yr) Pacific cool phase with a multidecadal warm phase in the North Atlantic, marked a substantial reorganization of climate in the Rocky Mountain region.
dc.identifier.doi10.1029/2002GL016154
dc.identifier.urihttps://hdl.handle.net/20.500.11919/759
dc.languageEnglish
dc.publisherUniversity of Wyoming. Libraries
dc.relation.ispartofFaculty Publication - Botany
dc.sourceBotany Faculty Publications
dc.subjectdrought
dc.subjecttree-rings
dc.subjectmulti decadal variability
dc.subjectPacific Decadal Oscillation
dc.subjectAtlantic Multidecadal Oscillation
dc.subjectBotany
dc.titlePatterns and Sources of Multidecadal Oscillations in Drought-Sensitive Tree-Ring Records from the Central and Southern Rocky Mountains
dc.typeJournal contribution
dcterms.title.journalGeophysical Research Letters
thesis.degree.disciplineBotany


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