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    Author(s): Frank H. KochCoulton. John W.
    Date: 2019
    Source: In: Potter, Kevin M.; Conkling, Barbara L., eds. Forest health monitoring: national status, trends, and analysis 2018. Gen. Tech. Rep. SRS-239. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station.
    Publication Series: Book Chapter
    Station: Southern Research Station
    PDF: View PDF  (14.0 MB)

    Description

    Although droughts affect most U.S. forests, there is considerable variation between regions in terms of drought frequency and intensity (Hanson and Weltzin 2000). These differences characterize the regions’ prevailing drought regimes. Most forests in the Western United States are subject to annual seasonal droughts. In contrast, forests in the Eastern United States usually experience one of two general drought patterns: random (i.e., occurring at any time of year) occasional droughts, as observed in the Appalachian Mountains and the Northeast, or frequent late-summer droughts, as usually observed in the Southeastern Coastal Plain and the eastern portion of the Great Plains (Hanson and Weltzin 2000).

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Koch, Frank H.; Coulton. John W. 2019. Chapter 4 - Drought and moisture surplus patterns in the conterminous United States: 2017, 2015-2017 and 2013-2017. In: Potter, Kevin M.; Conkling, Barbara L., eds. Forest health monitoring: national status, trends, and analysis 2018. Gen. Tech. Rep. SRS-239. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station: 77-96.

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