Cosmogenic radiocarbon as a means of studying solar activity in the past

Kocharov, G. E.; Ogurtsov, M. G.; Tsereteli, S. L.

doi:10.1134/1.1633618

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…Despite low precision and prediction power, it can be reliably concluded that average sunspot activity in the first part of the 21st century will be weaker than in the second part of the 20th century. This is also in qualitative agreement with the results of Nagovitsyn and Ogurtsov (2003), Miletskij (2003), Komitov and Kaftan (2003) (Komitov and Kaftan used the data set of Schove (1983) for their prognosis). Analysis of the Wolf number reconstruction of Ogurtsov (2004a) has led to the same inference (Ogurtsov, 2004b(Ogurtsov, , 2005.…”

Section: Resultssupporting

confidence: 90%

“…Thus concentration of 14 C in tree rings is dependent on SA level. Kocharov, Ogurtsov, and Tsereteli (2003) showed that long-term (periods of decades and longer) oscillations of 14 C are distinctly linked to the corresponding variations of GCR flux and, hence, with SA. This makes radiocarbon rather perspective from the point of view of solar paleoastrophysics.…”

Section: Datamentioning

confidence: 98%

“…It is then oxidized to 14 CO 2 , which takes part in a number of geochemical and geophysical processes (carbon-exchange cycle) and is ultimately stored in tree rings (see e.g., Stuiver et al, 1991;Dergachev, 1995;Kocharov, Ogurtsov, and Tsereteli, 2003). Thus concentration of 14 C in tree rings is dependent on SA level.…”

Section: Datamentioning

confidence: 98%

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On the Possibility of Forecasting the Sun's Activity Using Radiocarbon Solar Proxy

Ogurtsov

2005

Sol Phys

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Group sunspot number (GSN) values, averaged over decades, were reconstructed for a time interval 8505 BC-AD 1945 using data on the concentration of radiocarbon in tree rings. The prediction of an average level of solar activity was made for the future four decades by means of a nonlinear forecasting method. It was shown that the average activity of the Sun during 2005-2045 would be lower than at present. The given result is compared to the long-term forecasts by other authors. The importance of a paleoastrophysical approach for obtaining a long-term solar prognosis and for revealing the basic characteristics of solar activity change was confirmed.

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Section: Resultssupporting

confidence: 90%

Section: Datamentioning

confidence: 98%

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On the Possibility of Forecasting the Sun's Activity Using Radiocarbon Solar Proxy

Ogurtsov

2005

Sol Phys

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“…The 21 yr cycle in C 14 production, however, continued through it (Kocharov et al 2003a). There has been more activity recently than any time since about 850 (Usoskin et al , 2004.…”

Section: Radio Stars and Other Forms Of Activitymentioning

confidence: 99%

“…• Yes, the Sun had a Maunder minimum (so called because it was discovered by Gustav Spo ¨rer). The 21 yr cycle in C 14 production, however, continued through it (Kocharov et al 2003a). There has been more activity recently than any time since about 850 (Usoskin et al 2003(Usoskin et al , 2004.…”

Section: Radio Stars and Other Forms Of Activitymentioning

confidence: 99%

Astrophysics in 2004

Trimble

Aschwanden

2005

PUBL ASTRON SOC PAC

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Critical Comment on the Article by R. Rek “The Maunder Minimum and the Sun as the Possible Source of Particles Creating Increased Abundance of the 14C Carbon Isotope”

Usoskin

Kovaltsov²

2010

Sol Phys

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Several strong but erroneous statements were made by R. Rek in an article published in this volume of Solar Physics. Here we show that these misleading statements are caused by neglecting the known effects of the carbon cycle and misinterpretation of the data. In particular we show that the claim of the Maunder minimum being "the period without a significant cessation of activity" contradicts the bulk of observational evidence and is caused by the misinterpretation of proxy data.

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Cosmogenic radiocarbon as a means of studying solar activity in the past

Cited by 4 publications

References 16 publications

On the Possibility of Forecasting the Sun's Activity Using Radiocarbon Solar Proxy

On the Possibility of Forecasting the Sun's Activity Using Radiocarbon Solar Proxy

Astrophysics in 2004

Critical Comment on the Article by R. Rek “The Maunder Minimum and the Sun as the Possible Source of Particles Creating Increased Abundance of the 14C Carbon Isotope”

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