Vol. 7 (2010) > lrsp-2010-3

doi: 10.12942/lrsp-2010-3
Living Rev. Solar Phys. 7 (2010), 3

Dynamo Models of the Solar Cycle

1 Département de Physique, Université de Montréal, CP 6128 Centre-Ville, Montréal (Qc), H3C-3J7, Canada

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Article Abstract

This paper reviews recent advances and current debates in modeling the solar cycle as a hydromagnetic dynamo process. Emphasis is placed on (relatively) simple dynamo models that are nonetheless detailed enough to be comparable to solar cycle observations. After a brief overview of the dynamo problem and of key observational constraints, we begin by reviewing the various magnetic field regeneration mechanisms that have been proposed in the solar context. We move on to a presentation and critical discussion of extant solar cycle models based on these mechanisms. We then turn to the origin and consequences of fluctuations in these models, including amplitude and parity modulation, chaotic behavior, intermittency, and predictability. The paper concludes with a discussion of our current state of ignorance regarding various key questions relating to the explanatory framework offered by dynamo models of the solar cycle.

Keywords: Magnetic fields, Solar activity, Dynamo, Solar cycle

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Article Citation

Since a Living Reviews in Solar Physics article may evolve over time, please cite the access <date>, which uniquely identifies the version of the article you are referring to:

Paul Charbonneau,
"Dynamo Models of the Solar Cycle",
Living Rev. Solar Phys. 7,  (2010),  3. URL (cited on <date>):

Article History

ORIGINAL http://www.livingreviews.org/lrsp-2005-2
Title Dynamo Models of the Solar Cycle
Author Paul Charbonneau
Date accepted 23 April 2005, published 13 June 2005
UPDATE http://www.livingreviews.org/lrsp-2010-3
Title Dynamo Models of the Solar Cycle
Author Paul Charbonneau
Date accepted 26 August 2010, published 4 September 2010
Changes Besides updates relating to the literature published in the past five years (added about 60 new references), and reworking a few sections of the 2005 version, main major novelties compared to the 2005 version are: 1. Material on turbulent pumping, and its effect in various types of dynamo models. 2. Expanded Section 4.9 on MHD numerical simulations of large-scale dynamo action. 3. Added Section 5.7 on dynamo model-based cycle prediction schemes. 4. Inclusion (and discussion of) animations directly in the text. By appropriate deletions elsewhere in the review, I have managed to retain its overall length at nearly the same as the 2005 version.
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