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Solar activity linked to drought duration study says
San Francisco based report cites University of Arizona researcher Charles W. Stockton noting drought cycles in the West align with a 20 to 22 year sunspot pattern. Tree-ring data since 1700 implies current drought may persist another year or two, threatening California water for agriculture and industry through winter.
MENTIONED IN THIS ARTICLE
San Francisco
UPI
American Geophysical Union
Charles W. Stockton
University of Arizona
California
P.B. Duffy
Center For Astrophysics
Cambridge
Mass
Gulf of Alaska
North America