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Geomagnetism and Aeronomy

, Volume 53, Issue 8, pp 945–948 | Cite as

Spatiotemporal sunspot impulses and reversal of the polar magnetic field on the sun

  • N. V. Zolotova
  • D. I. Ponyavin
Article

Abstract

The spatiotemporal organization of sunspots in the form of activity impulses (according to Gnevyshev’s terminology) is considered as a source of poleward magnetic surges of new polarity. Polar fields in the northern and southern hemispheres have been reconstructed from 1875 to 2012. An increase in the tilt angle of magnetic bipoles with latitude is a crucial parameter in the proposed model to reverse the polar field on the Sun. The role of the surface meridional flow forming magnetic surges of new and old polarities is discussed. It is shown that the velocity and the latitudinal profile of the flow influence the modeled polar field.

Keywords

Tilt Angle Polar Field Sunspot Group Sunspot Cycle Meridional Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  1. 1.St. Petersburg State UniversitySt. PetersburgRussia

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