Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

The Revised Sunspot Record in Comparison to Cosmogenic Radionuclide-Based Solar Activity Reconstructions

  • Raimund Muscheler
  • Florian Adolphi
  • Konstantin Herbst
  • Andreas Nilsson
Publishing year: 2016-11
Language: English
Pages: 3025-3043
Publication/Series: Solar Physics
Volume: 291
Issue: 9-10
Document type: Journal article
Publisher: Springer

Abstract english

Recent revisions in the sunspot records illustrate the challenges related to obtaining a 400-year-long observational record of past solar-activity changes. Cosmogenic radionuclides offer the possibility of obtaining an alternative and completely independent record of solar variability. Here, we illustrate that these records offer great potential for quantitative solar-activity reconstructions far back into the past, and we provide updated radionuclide-based solar-activity reconstructions for the past 2000 years. However, cosmogenic-radionuclide records are also influenced by processes independent of solar activity, leading to the need for critical assessment and correction for the non-solar influences. Independent of these uncertainties, we show a very good agreement between the revised sunspot records and the 10Be records from Antarctica and, in particular, the 14C-based solar-activity reconstructions. This comparison offers the potential of identifying remaining non-solar processes in the radionuclide-based solar-activity reconstructions, but it also helps identifying remaining biases in the recently revised sunspot records.


  • Geosciences, Multidisciplinary
  • Be
  • C
  • Cosmogenic radionuclides
  • Solar modulation
  • Solar-activity reconstruction
  • Sunspots


  • ISSN: 0038-0938
Florian Adolphi
E-mail: florian [dot] adolphi [at] geol [dot] lu [dot] se

Postdoctoral fellow

Quaternary Sciences

+46 46 222 42 67

Sölvegatan 12, Lund