Abstract
As known, the ionosphere and the neutral atmosphere of the Earth are constantly exposed to energetic charged particles of extraterrestrial origin, first of all—galactic cosmic rays, and at times—and particles accelerated by the Sun. In addition, particles of radiation belts (ERBs) are always present in the Earth’s magnetosphere. This corpuscular environment of the Earth, along with the electromagnetic radiation of the Sun, plays a huge role in the physics of near-Earth space and in solar-terrestrial relations in general. Below we briefly consider some of the effects caused by the action of energetic particles on various layers of the ionosphere and atmosphere.
In recent decades, significant progress has been made in understanding the geophysical effects of cosmic rays, especially of solar origin, so to illustrate these effects, as in the previous chapter, we again turn to SCR. Their impact leads to such phenomena as the absorption of short radio waves in the ionosphere (the PCA effect in the polar caps of the Earth), the depletion of the ozone layer (O3), and increased conductivity in the global electrical circuit (GEC) of the atmosphere. In this case, changes in the parameters of Schumann resonances in the “Earth-ionosphere” waveguide and deterioration of the transparency of the atmosphere are also observed. In addition, at the heights of the stratosphere, and especially in the lower atmosphere (troposphere), there are processes of generation of some cosmogenic isotopes-radionuclides (radiocarbon 14C and radioactive isotopes 10Ве, 26Al, 36Cl). Numerous nitrogen compounds are also formed here, including NOx nitrates (i.e., nitrogen oxide and dioxide—NO and NO2, respectively). It also cannot be ruled out that SCRs can directly or indirectly (through the global electric circuit, GEC) affect the dynamics of purely tropospheric (meteorological) phenomena (for example, atmospheric vorticity).
“Gutta cavat lapidem”—“A drop wears away a stone”.
P. Ovidius Naso
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Miroshnichenko, L. (2023). Energetic Particles in the Geosphere. In: Solar-Terrestrial Relations. Springer, Cham. https://doi.org/10.1007/978-3-031-22548-2_10
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