The Maunder Minimum and the Solar Dynamo

Nesme-Ribes, E.; Sokoloff, D.; Ribes, Jean-Paul; Kremliovsky, Michael

doi:10.1007/978-3-642-79257-1_5

Cited by 24 publications

(8 citation statements)

References 20 publications

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“…Accordingly, the model shows an anticorrelation between deviations from dipolar parity and amplitudes of magnetic cycles. Substantial hemispheric asymmetry is typically present in the epochs of low magnetic cycles, similar to the observations of Ribes & Nesme-Ribes (1993) and Nesme-Ribes et al (1994).…”

Section: Introductionsupporting

confidence: 86%

Grand Minima and North-South Asymmetry of Solar Activity

Olemskoy

Kitchatinov

2013

ApJ

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A solar-type dynamo model in a spherical shell is developed with allowance for random dependence of the poloidal field generation mechanism on time and latitude. The model shows repeatable epochs of a strongly decreased amplitude of magnetic cycles similar to the Maunder minimum of solar activity. Random dependence of dynamo parameters on latitude breaks the equatorial symmetry of generated fields. The model shows the correlation of the occurrence of grand minima with deviations in the dynamo field from dipolar parity. An increased north-south asymmetry of magnetic activity can, therefore, be an indicator of transitions to grand minima. Qualitative interpretation of this correlation is suggested. Statistics of grand minima in the model are close to the Poisson random process, indicating that the onset of a grand minimum is statistically independent of preceding minima.

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Section: Introductionsupporting

confidence: 86%

Grand Minima and North-South Asymmetry of Solar Activity

Olemskoy

Kitchatinov

2013

ApJ

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“…Cyclic behaviour absent in a particular hemisphere during an activity cycle in the above figures persists still in form of a very weak magnetic field oscillations which are not strong enough to appear in the butterfly diagrams. Possibly, this is an option to explain that some tracers of cyclic sunspot behaviour (Frick et al, 1997), and even of apparent solar diameter (Nesme-Ribes et al, 1995), are recognizable from the archive data for the Maunder Minimum. discuss the possibility that solar activity cannot be considered as a stationary random process even on the timescale of [tens of thousands of] years, as suggested by the following test.…”

Section: Fluctuations In the Solar Governing Parameters And Grand Minimamentioning

confidence: 99%

Sunspot cycles and Grand Minima

Sokoloff¹,

Arlt²,

Moss³

et al. 2009

Proc. IAU

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Abstract. Observational data concerning the long-term history of cyclic solar activity as recorded in sunspot and isotopic data are discussed in the context of solar dynamo theory. In particular, a simple dynamo model based on differential rotation and the mirror asymmetry of convection with random fluctuations of dynamo governing parameters is shown to reproduce some basic features of the solar magnetic activity evolution.

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“…Previous experimental values for vibrational frequencies have been reported only for the 2 (umbrella) (22) and 3 (C-H asymmetric stretch) modes (23,24), and there is considerable uncertainty in the former (see Table 1). A tentative assignment of 1 was made in our earlier low-resolution study, but it is apparent now that this was probably a single rotational line for 2 ϭ 3.…”

mentioning

confidence: 99%

“…However, the amplitude of the seasonal cycle is proportional to the 14 C influx from the stratosphere. During times of "deep" solar minima (22), the 14 C production (23) and hence 14 C flux were doubled as compared to the average of the 11-year solar cycle [ figure 8. of (24)] at high latitudes.…”

mentioning

confidence: 99%

Regional ¹⁴ CO ₂ Offsets in the Troposphere: Magnitude, Mechanisms, and Consequences

Kromer

Manning

Kuniholm

et al. 2001

Science

115

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Radiocarbon dating methods typically assume that there are no significant tropospheric (14)CO(2) gradients within the low- to mid-latitude zone of the Northern Hemisphere. Comparison of tree ring (14)C data from southern Germany and Anatolia supports this assumption in general but also documents episodes of significant short-term regional (14)CO(2) offsets. We suggest that the offset is caused by an enhanced seasonal (14)CO(2) cycle, with seasonally peaked flux of stratospheric (14)C into the troposphere during periods of low solar magnetic activity, coinciding with substantial atmospheric cooling. Short-term episodes of regional (14)CO(2) offsets are important to palaeoclimate studies and to high-resolution archaeological dating.

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The Maunder Minimum and the Solar Dynamo

Cited by 24 publications

References 20 publications

Grand Minima and North-South Asymmetry of Solar Activity

Grand Minima and North-South Asymmetry of Solar Activity

Sunspot cycles and Grand Minima

Regional ¹⁴ CO ₂ Offsets in the Troposphere: Magnitude, Mechanisms, and Consequences

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The Maunder Minimum and the Solar Dynamo

Cited by 24 publications

References 20 publications

Grand Minima and North-South Asymmetry of Solar Activity

Grand Minima and North-South Asymmetry of Solar Activity

Sunspot cycles and Grand Minima

Regional 14 CO 2 Offsets in the Troposphere: Magnitude, Mechanisms, and Consequences

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Product

Resources

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Regional ¹⁴ CO ₂ Offsets in the Troposphere: Magnitude, Mechanisms, and Consequences