期刊
SOLAR PHYSICS
卷 291, 期 9-10, 页码 3025-3043出版社
SPRINGER
DOI: 10.1007/s11207-016-0969-z
关键词
Cosmogenic radionuclides; Sunspots; Solar-activity reconstruction; Solar modulation; C-14; Be-10
资金
- Swedish Research Council [DNR2013-8421]
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 Be-10 records from Antarctica and, in particular, the C-14-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.
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