Hale Magnetic Cycle on the Sun: Manifestations in Geophysical Characteristics and Possible Influence on the Earth’s Climate

Oscillations with periods of 22 years close to the Hale magnetic cycle on the Sun are observed in a large number of climatic characteristics, and amplitudes of these oscillations often exceed those of 11-yr ones.In this work, we study the manifestations of the solar Hale cycle in different geophysical characteristics, which can contribute to the formation of bidecadal oscillations in the Earth's climate.It was found that temporal variations of cosmic ray fluxes in the stratosphere, as well as geoeffective parameters of solar wind and geomagnetic activity characteristics differ significantly in even and odd solar cycles.The results obtained suggest that the solar Hale cycle can contribute to bidecadal variations in fluxes of energetic charged particles (cosmic rays and auroral electrons) affecting the ionization rate in the atmosphere of high latitudes.In turn, changes in the ionization rate affect the chemical composition and temperature regime of the high-latitudinal atmosphere, which can lead to changes in atmospheric circulation and climate characteristics.