Climate: How unusual is today's solar activity?

  title={Climate: How unusual is today's solar activity?},
  author={Raimund Muscheler and Fortunat Joos and Simon A. M{\"u}ller and Ian Snowball},
Arising from: S. K. Solanki, I. G. Usoskin, B. Kromer, M. Schüssler & J. Beer 431, 1084–1087 (2004); Solanki et al. reply.To put global warming into context requires knowledge about past changes in solar activity and the role of the Sun in climate change. Solanki et al. propose that solar activity during recent decades was exceptionally high compared with that over the preceding 8,000 years. However, our extended analysis of the radiocarbon record reveals several periods during past centuries… 
Climate: How unusual is today's solar activity? (reply)
Muscheler et al. claim that the solar activity affecting cosmic rays was much higher in the past than we deduced from 14C measurements. However, this claim is based on a problematic normalization and
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A History of Solar Activity over Millennia
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Both auroral and geomagnetic activity provide information from which the behavior of the magnetosphere and the solar wind can be inferred. Swedish auroral sightings during the eighteenth and
Calibration of the Radiocarbon Time Scale for the Southern Hemisphere: Ad 1850–950
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Solar cosmic ray events for the period 1561–1994: 2. The Gleissberg periodicity
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Production of cosmogenic Be nuclei in the Earth's atmosphere by cosmic rays: Its dependence on solar modulation and the interstellar cosmic ray spectrum
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