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Reconstructed Temperature and Precipitation on a Millennial Timescale from Tree-Rings in the Southern Colorado Plateau, U.S.A.


San Francisco Peaks.  U.S. Geological Survey photo.
San Francisco Peaks.
U.S. Geological Survey photo.
Reconstructed Temperature and Precipitation on a Millennial Timescale from Tree-Rings in the Southern Colorado Plateau, U.S.A.
Climatic Change Volume 70, Number 3, pp. 465 - 487, June 2005.

Matthew Salzer 1 and Kurt F. Kipfmueller 1,2
1Laboratory of Tree-Ring Research
The University of Arizona
Tucson, Arizona 85721, U.S.A.

2 Present address: Department of Geography
University of Minnesota
Minneapolis, MN 55455, U.S.A.
ABSTRACT:
Two independent calibrated and verified climate reconstructions from ecologically contrasting tree-ring sites in the southern Colorado Plateau, U.S.A. reveal decadal-scale climatic trends during the past two millennia. Combining precisely dated annual mean-maximum temperature and October through July precipitation reconstructions yields an unparalleled record of climatic variability. The approach allows for the identification of thirty extreme wet periods and thirty-five extreme dry periods in the 1,425-year precipitation reconstruction and 30 extreme cool periods and 26 extreme warm periods in 2,262-year temperature reconstruction. In addition, the reconstructions were integrated to identify intervals when conditions were extreme in both climatic variables (cool/dry, cool/wet, warm/dry, warm/wet). Noteworthy in the reconstructions are the post-1976 warm/wet period, unprecedented in the 1,425-year record both in amplitude and duration, anomalous and prolonged late 20th century warmth, that while never exceeded, was nearly equaled in magnitude for brief intervals in the past, and substantial decadal-scale variability within the Medieval Warm Period and Little Ice Age intervals.
Download data from the WDC Paleo archive:
Southern Colorado Plateau Temperature and Precipitation Reconstructions in Text or Microsoft Excel format.
To read or view the full study, please visit the Springer website.
It was published in Climatic Change, Volume 70, Number 3, pp. 465 - 487, June 2005.
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