Specific features in the effect of solar activity on the Earth’s climate changes

Abstract

The effect of solar activity on climate has been considered. It has been shown that the total contribution of solar activity to changes in the Earth’s global temperature is insignificant but not negligible: about a fifth of the temperature dispersion is related to solar activity. This contribution strongly depends on the time scale: it is under 5% for cyclic variations with periods shorter than 40–50 years (about 1% for the 11-year variations) and starts sharply increasing for the times on the order of the 80- to 90-year Gleissberg cycle, reaching its maximum (about 40–50%) for the 200-year Suess cycle.