Abstract
Sun is the main source of energy for the earth and other planets. Its activity in one or other way influences the terrestrial climate. Particularly, the solar activity manifested in the form of sunspots is found to be much more influential on the earth’s climate and on its magnetosphere. Links of the variability in terrestrial climate and sunspot cycles and associated magnetic cycles have been the concern of many recent studies. These two time series data sunspots and K-index are distributed into 22-year cycles, according to the magnetic field of the sun in which polarity reverses after 11-years. The fractal dimension of each sunspot cycle from 1 to 24 is calculated and found to be quasi-regular (persistent, [Formula: see text]). To understand the regular effects of the dynamics of sunspot cycles on the earth’s climate and magnetosphere, the sunspot cycles and K-index cycles (22 years each) from 1932 to 2014 are observed and discussed comparatively in the perspective of fractal dimension and Hurst exponent.
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