Effect of Solar Activities to the Earth's Atmosphere

Dear Colleagues,

Solar activity has a strong influence on Earth's atmosphere. The Sun can affect the atmosphere in many ways, including solar flares, variations in solar X-ray and ultraviolet irradiance, release of intense fluxes of solar energetic particles, and coronal mass ejections resulting in auroral phenomena and geomagnetic storms. The contribution of these factors to the overall response of the atmosphere to solar activity requires further comprehensive studies. The occurrence of all these phenomena increases with solar activity. A solar maximum phase of the 25th solar cycle has begun in 2023 with several strong solar events, which have caused major geomagnetic storms. During some of them, anomalous phenomena occurred such as rare mid-latitude aurora.

Studying the response of Earth’s atmosphere to solar activity is of great practical importance. Increased solar radiation and occurrence of geomagnetic storms may cause disturbances in the density of atmospheric gases that result in a greater drag effect, which reduces the lifetime of satellites. Hard electromagnetic radiation produced by solar flares may disturb the ionosphere and, thus, interfere with radio signals, resulting in the degradation of communication quality. More and more accurate knowledge is needed for the stable operation of satellites, telecommunications, etc.

The Special Issue is open to research on the influence of solar activity on the Earth’s atmosphere and the elucidation of various aspects of the mechanism and consequences of its influence.

Additionally, studies of atmospheric and ionospheric phenomena associated with geomagnetic storms at the beginning of the solar maximum of the current 25th solar cycle are welcome.

Dr. Alla Suvorova
Dr. Alexei Dmitriev
Guest Editors

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