The reversal of the solar polar magnetic fields. IV - The polar fields near sunspot maximum

Details The reversal of the solar polar magnetic fields. IV - The polar fields near sunspot maximum The reversal of the solar polar magnetic fields. IV - The polar fields near sunspot maximum

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..142..221m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 142, no. 2, p. 221-232.

Physics

7

Magnetic Field Configurations, Poles, Solar Activity Effects, Solar Cycles, Solar Magnetic Field, Solar Gravitation, Solar Observatories, Sunspot Cycle, Transport Properties

Scientific paper

The evolution of solar polar magnetic fields between Carrington rotations 1815 and 1834 is described using magnetic data from the Mount Wilson Observatory and the National Solar Observatory. The observations are compared with simulations using the flux transport equation. It is shown that the evolution of the polar field cannot be reproduced accurately by simulations of the diffusion and poleward drift of the emerging active regions at sunspot latitudes. Histograms of the distribution of the field intensities derived from daily magnetograms are presented which indicate that flux emerges at high latitudes and contributes to the evolution of the magnetic patterns.

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