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has been cited by the following article:
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.