Spectral properties of tree-ring data in the United States southwest as related to El Nino/Southern Oscillation

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12 Scopus citations

Abstract

The spatial extent and geographic orientation of significant interregional tree-ring correlation in the ENSO band is similar to that in the entire 0 to π frequency range. Spatial correlations with the Southwest region are highly significant (99.9% level) and in-phase in a band oriented southwest-northeast from Southern California to Colorado, and weakly significant (95% level) and in-phase with northwestern Wyoming. Spatial correlation of Southwest tree rings with other regional tree-ring series is strongest outside the ENSO band, at wavelengths 20 yr and longer. An important component of low-frequency variance in Southwest trees is a pronounced downward growth trend from the early 1900s to the 1950s. -from Author

Original languageEnglish (US)
Pages (from-to)227-241
Number of pages15
JournalUnknown Journal
StatePublished - Jan 1 1993

ASJC Scopus subject areas

  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

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