How unusual is today's solar activity? (reply)

S. K. Solanki (), I. G. Usoskin, B. Kromer, M. Schüssler and J. Beer
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S. K. Solanki: Max-Planck-Institut für Sonnensystemforschung
I. G. Usoskin: Sodankylä Geophysical Observatory (Oulu unit), University of Oulu
B. Kromer: Heidelberger Akademie der Wissenschaften, Institut für Umweltphysik
M. Schüssler: Max-Planck-Institut für Sonnensystemforschung
J. Beer: Eidgenössische Anstalt für Wasser-versorgung Abwasserreinigung und Gewässerschutz (EAWAG)

Nature, 2005, vol. 436, issue 7050, E4-E5

Abstract: Abstract Muscheler et al. 1 claim that the solar activity affecting cosmic rays was much higher in the past than we deduced2 from 14C measurements. However, this claim is based on a problematic normalization and is in conflict with independent results, such as the 44Ti activity in meteorites and the 10Be concentration in ice cores.

Date: 2005
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DOI: 10.1038/nature04046

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