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Evidence for quasi-periodic July drought in the Hudson Valley, New York

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Abstract

July Palmer Drought Severity Indices1 (PDSI) have been reconstructed2 for the Hudson Valley region of New York State from the annual ring-width variations of local old trees. Using additional, subsequently developed tree-ring chronologies, we have developed a new July drought reconstruction that extends back to 1694. Variance spectra of the new PDSI series reveal statistically significant quasi-periodicities of 11.4 and 26 yr.

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Authors and Affiliations

  1. Lamont-Doherty Geological Observatory, Palisades, New York, 10964

    Edward R. Cook & Gordon C. Jacoby Jr

Authors
  1. Edward R. Cook
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  2. Gordon C. Jacoby Jr
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Cook, E., Jacoby, G. Evidence for quasi-periodic July drought in the Hudson Valley, New York. Nature 282, 390–392 (1979). https://doi.org/10.1038/282390a0

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  • DOI: https://doi.org/10.1038/282390a0

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