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Millennium-Scale Sunspot Number Reconstruction: Evidence For An Unusually Active Sun Since The 1940s
PHYSICAL REVIEW LETTERS, no. 21 (2003)
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Abstract
The extension of the sunspot number series backward in time is of considerable interest for dynamo theory, solar, stellar, and climate research. We have used records of the Be-10 concentration in polar ice to reconstruct the average sunspot activity level for the period between the year 850 to the present. Our method uses physical models ...More
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