Unusual activity of the Sun during recent decades compared to the previous 11,000 years

@article{Solanki2004UnusualAO,
  title={Unusual activity of the Sun during recent decades compared to the previous 11,000 years},
  author={Sami K. Solanki and Ilya G. Usoskin and Bernd Kromer and M. Sch{\"u}ssler and J{\"u}rg Beer},
  journal={Nature},
  year={2004},
  volume={431},
  pages={1084-1087}
}
Direct observations of sunspot numbers are available for the past four centuries, but longer time series are required, for example, for the identification of a possible solar influence on climate and for testing models of the solar dynamo. Here we report a reconstruction of the sunspot number covering the past 11,400 years, based on dendrochronologically dated radiocarbon concentrations. We combine physics-based models for each of the processes connecting the radiocarbon concentration with… 
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References

SHOWING 1-10 OF 41 REFERENCES
Reconstruction of solar activity for the last millenium using 10Be data
In a recent paper (Usoskin et al. 2002a), we have reconstructed the concentration of the cosmogenic 10 Be isotope in ice cores from the measured sunspot numbers by using physical models for 10 Be
Long-term indirect indices of solar variability
  • J. Beer
  • Environmental Science, Physics
  • 2000
Continuous direct records of solar variability are limited to the telescopic era covering approximately the past four centuries. For longer records one has to rely on indirect indices such as
Evolution of the Sun's large-scale magnetic field since the Maunder minimum
TLDR
A model describing the long-term evolution of the Sun's large-scale magnetic field reproduces the doubling of the interplanetary field and indicates that there is a direct connection between the length of the sunspot cycle and the secular variations.
Use of 10Be in polar ice to trace the 11-year cycle of solar activity
A DETAILED knowledge of the history of solar magnetic activity is important in several respects. From satellite data there is increasing evidence that solar magnetic activity and solar irradiance are
Can solar variability explain global warming since 1970
[1] The magnitude of the Sun's influence on climate has been a subject of intense debate. Estimates of this magnitude are generally based on assumptions regarding the forcing due to solar irradiance
Atmospheric 14C and century-scale solar oscillations
THE solar-wind plasma in our interplanetary space deflects part of the Earth-bound cosmic-ray flux through its magnetic interaction with the electrically charged incoming particles. Because changes
Secular variation of the Sun's magnetic flux
We present an extension of the model of Solanki et al. (2000) that allows us to reconstruct the time evolution of both the total and the open magnetic flux at the solar surface since 1700. The flux
Sun, ocean, climate and atmospheric 14CO2 : an evaluation of causal and spectral relationships
Solar (heliomagnetic), geomagnetic and oceanic forcing all play a role in atmospheric 14CO2 change. Here we assign the variance associated with certain periodicities in a single year (0-450 cal. BP)
...
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