Evidence of a 22-year rhythm of drought in the western United States related to the Hale solar cycle since the 17th century.

J. M. Mitchell, C. W. Stockton, D. Meko

Research output: Contribution to journalArticlepeer-review

141 Scopus citations

Abstract

Families of Drought Area Indices (DAI) have been derived from tree-ring data for the entire U.S. west of the Mississippi River, for each year back to either 1700 or 1600 A.D., depending on the data base used. Three families of DAI are considered in the analysis reported in this paper. The solar control is best described as a modulation of terrestrial drought-inducing mechanisms, such that it alternately encourages and discourages the development of major continental droughts which are set up by evolutionary climatic processes unrelated to solar activity. - Authors

Original languageEnglish (US)
Pages (from-to)125-143
Number of pages19
JournalUnknown Journal
DOIs
StatePublished - 1979

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences

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