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Zonal harmonics of solar magnetic field for solar cycle forecast View all abstracts by submitter

Valery Pipin   Submitted: 2021-08-25 01:22

According to the scheme of action of the solar dynamo, the poloidal magnetic field can be considered a source of production of the toroidal magnetic field by the solar differential rotation. From the polar magnetic field proxies, it is natural to expect that solar Cycle 25 will be weak as recorded in sunspot data. We suggest that there are parameters of the zonal harmonics of the solar surface magnetic field, such as the magnitude of the ℓ=3 harmonic or the effective multipole index, that can be used as a reasonable addition to the polar magnetic field proxies. We discuss also some specific features of solar activity indices in Cycles 23 and 24.

Authors: V.N. Obridko, D.D. Sokoloff, V.V. Pipin, A.S. Shibalvaa, I.M. Livshits
Projects: None

Publication Status: accepted in JSTP
Last Modified: 2021-08-25 12:27
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