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Millennium-Scale Sunspot Number Reconstruction: Evidence for an Unusually Active Sun since the 1940s
Open accessAbstract
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 (10)Be 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 for processes connecting the (10)Be concentration with the sunspot number. The reconstruction shows reliably that the period of high solar activity during the last 60 years is unique throughout the past 1150 years. This nearly triples the time interval for which such a statement could be made previously.
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Citations
Cited by
Unusual activity of the Sun during recent decades compared to the previous 11,000 years
Solanki, S. K., Usoskin, I. G., Kromer, B., Schüssler, M., & Beer, J. (2004) · Nature · doi:10.1038/nature02995 · Cited by 958
Self-citationGao, C., Robock, A., & Ammann, C. (2008) · Journal of Geophysical Research: Atmospheres · doi:10.1029/2008jd010239 · Cited by 838
Grand minima and maxima of solar activity: new observational constraints
Usoskin, I. G., Solanki, S. K., & Kovaltsov, G. A. (2007) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20077704 · Cited by 448
Self-citationSolar radiative output and its variability: evidence and mechanisms
Fr�hlich, C., & Lean, J. (2004) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-004-0024-1 · Cited by 406
Solar activity during the last 1000 yr inferred from radionuclide records
Muscheler, R., Joos, F., Beer, J., Müller, S. A., Vonmoos, M., & Snowball, I. (2007) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2006.07.012 · Cited by 373
Metadata
- Authors
- Usoskin, I. G., Solanki, S. K., Schüssler, M., Mursula, K., & Alanko, K.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2003-11-19
- Volume
- 91
- Issue
- 21
- Pages
- 211101-211101
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2023751331
- Cited by
- 242
- References
- 0
- FWCI
- 10.05
- Type
- journal article
- Language
- en
- Open access
- green
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- Usoskin, I. G., Solanki, S. K., Schüssler, M., Mursula, K., & Alanko, K. (2003). Millennium-Scale Sunspot Number Reconstruction: Evidence for an Unusually Active Sun since the 1940s. Physical Review Letters. https://doi.org/10.1103/physrevlett.91.211101
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