TITLE:
Asymmetry of Sunspot Distribution in KAU Solar Observations during 22 and 23 Solar Cycles
AUTHORS:
Hassan Mohammad Basurah, Amerah Fouad Dhignah, Fouad Yousef Kamal
KEYWORDS:
Sunspots; Long Solar Cycles; North-south Solar Asymmetry
JOURNAL NAME:
International Journal of Astronomy and Astrophysics,
Vol.3 No.4,
December
4,
2013
ABSTRACT: The King Abdul Aziz University (KAU) solar observations
of Sunspot on daily passes from 1981 to 2009 are used to investigate the
North-South asymmetry variation of the sunspot numbers and its area. We found
that the asymmetry dominated to be southern during the last two solar cycles,
which evidently exists following a long-term characteristic time scale. Our
results were in compliance with the global asymmetry.