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We discuss the effect of a non‐trivial meridional circulation pattern on a flux‐transport type of solar dynamo. The critical value of the turbulent helicity and the periods are calculated as a function of the meridional flow strength. We found that the dynamo mechanism is mainly determined by the global topology of the meridional flow. In particular the equatorwards migration in the butterfly diagram can be easily obtained by the combined action of two cells of meridional circulation. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Bonanno et al. (2005) studied this question.
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