Reliably known data (since 1849) on sunspots lead to a scenario of solar cyclicity, in which epochs of increased and decreased solar activity (SA) alternate, each lasting 5 cycles, separated by transition periods (~1.5 cycles). This scenario is determined by the magnitude of the minimum background values of the poloidal component of the solar magnetic field, which can be estimated at the minima of the cycles. SA epochs control changes in the solar constant, the level and energy of all solar activity within the solar cycles of the corresponding epochs, and, consequently, the level of SA impacts on the electromagnetic and corpuscular environment of the inner and outer heliosphere, determining Earth’s space weather on time scales of tens and hundreds of years. A recently proposed new SA concept, based on all observed emerging magnetic fluxes, regardless of size, allows for a refinement of the concept of solar cyclicity and is consistent with its scenario. In the new concept, the fundamental solar cycle is understood as the simultaneous existence of magnetic structures of two 22-year magnetic solar cycles in separate, adjacent latitudinal bands belonging to adjacent 11-year cycles, with the orientations of their magnetic elements differing by approximately 180°. Both bands continuously drift from high latitudes toward the equator. A polarity reversal for most of these structures occurs at the beginning of each 22-year cycle and at higher latitudes than in sunspot cycles. In this concept, solar activity epochs occupy a complete fundamental solar cycles, and the next one is transitional—the end of the current solar cycles and the beginning of the next.
V.N. ISHKOV (Sun,) studied this question.