Quasiperiodic oscillations in the atmospheres of the Sun,Earth, and planets

The published data on long-term observations on cycles of the activity of the Sun and stars of late spectral classes (F, G, K) were analyzed. Quasiperiodic oscillations (QPO) in solar activity with periods varying from 1.8 (7-year cycles) to 12.5 years (24-year cycles) were revealed for the first time. A high degree of correlation between QPO periods and long-term cycles of variations in the activity of the Sun and stars was revealed.