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Observed Drought Trends 1958 to 2007
Trends in end-of-summer drought as measured by the Palmer Drought Severity Index from 1958 to 2007 in each of 344 U.S. climate divisions.1 Hatching indicates significant trends. Image Reference: Guttman and Quayle1
References
- 1. a. b. [144] Guttman, N. B., and R. G. Quayle. "A Historical Perspective of U.S. Climate Divisions." Bulletin of the American Meteorological Society 77, no. 2 (1996): 293-303.
Summary
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