U.S. Geological Survey: Science for a Changing World - USGS visual identity mark and link to main Web site at http://www.usgs.gov/

Charts showing Palmer Drought Severity Index reconstructions based on tree-ring studies for 1963, 1964, 1966, and 1967

Figure 12. Palmer Drought Severity Index reconstructions based on tree-ring studies for 1963, 1964, 1966, and 1967. Maps are from Cook and others (1999); see data at http://www.ngdc.noaa.gov/paleo/image/pdsi/PDSI_tr.mov/. The reconstructions show that drought affected large areas of the United States during the 1960's.
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U.S. Geological Survey, U.S. Department of the Interior
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Contact: Harry Dowsett (hdowsett@usgs.gov)
Last modified 09.07.01 (krw)