Abstract
The dynamo theory of the solar cycle faces numerous difficulties with an explanation of the observed behavior of sunspot activity. In particular, there is an essential irregularity in the sequence of 11(22)-year cycles. In this paper we want to show how the complicated long-term evolution of solar activity can be understood within the framework of a simple model demonstrating low-dimensional chaotic behavior. According to this description we are able to give a definition for the periods of low activity (Global Minima), to describe how the transition to (from) a Global Minimum occurs and to show the role of the 11(22)-year cycle and its phase catastrophe. The explanations of the origin of the Gleissberg cycle and thousand-year variations of solar activity are given. In summary, the independence of the proposed scenario from the particular choice of model is shown. Thus one can formulate dynamics in the language of generalized instabilities which can aid the search for the underlying physical processes.
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Kremliovsky, M.N. Can we understand time scales of solar activity?. Sol Phys 151, 351–370 (1994). https://doi.org/10.1007/BF00679081
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DOI: https://doi.org/10.1007/BF00679081