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  • Author or Editor: HAROLD C. FRITTS x
  • Journal of Applied Meteorology and Climatology x
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Harold C. Fritts
,
Terence J. Blasing
,
Bruce P. Hayden
, and
John E. Kutzbach

Abstract

Ring widths from trees on certain sites reflect climatic variation. Therefore, long time series derived from replicated and precisely dated ring-width chronologies may be utilized to extend climatic records into prehistoric times. Multivariate analyses of tree-ring chronologies from western North America are used to derive response functions from which one can ascertain what climatic information each ring-width chronology contains. In addition, multivariate analyses are utilized to calibrate a large number of ring-width chronologies of diverse response functions and from widely dispersed sites with a large number of regional climatic variables. A series of transfer functions is derived which allows estimates of anomalous climatic variation from tree-ring records. Reconstructions of anomalous variations in atmospheric circulation for portions of the Northern Hemisphere back to 1700 A.D. are obtained by applying the transfer functions to tree-ring data for time periods when ring data are available but climatic data are not.

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