Reconstructed Drought History, North-Central Great Basin: 1601–1982

  1. David H. Peterson
  1. William D. Nichols

Published Online: 23 MAR 2013

DOI: 10.1029/GM055p0061

Aspects of Climate Variability in the Pacific and the Western Americas

Aspects of Climate Variability in the Pacific and the Western Americas

How to Cite

Nichols, W. D. (1989) Reconstructed Drought History, North-Central Great Basin: 1601–1982, in Aspects of Climate Variability in the Pacific and the Western Americas (ed D. H. Peterson), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM055p0061

Author Information

  1. U.S. Geological Survey705 N. Plaza St., Carson City, Nv 89703

Publication History

  1. Published Online: 23 MAR 2013
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780875900728

Online ISBN: 9781118664285

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Keywords:

  • Climatic changes—Pacific Area.;
  • Paleoclimatology—Pacific Area.;
  • Climatic changes—West (U.S.);
  • Paleoclimatology—West (U.S.);
  • Atmospheric carbon dioxide.

Summary

The July Palmer Drought Severity Index for northeastern Nevada has been reconstructed for 1601–1982 using the average tree-ring chronology indices from two sites. A regression equation on the averaged index explains 74 percent of the variance in the July Palmer Drought Severity Index from 1932 to 1981. A reconstructed drought record shows that there were 100 drought years in the 382 years since 1601. Sixty-four percent of these years occurred as 1- or 2-year droughts. The reconstructed index indicates that severe to extreme drought conditions occurred in 37 percent of the drought years.