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ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2026, V. 23, No. 2, pp. 370-382

On the causes of resonant scattering by excited ions of atmospheric gas components

V.V. Bychkov 1 , S.Yu. Khomutov 1 
1 Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS, Paratunka, Kamchatka Krai, Russia
Accepted: 05.03.2026
DOI: 10.21046/2070-7401-2026-23-2-370-382
The results of analysis of atmosphere lidar sounding data in the altitude range of 25–500 km obtained at the lidar station of the Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS (Kamchatka, 53° N, 158° E) are discussed. The recorded light scattering in the ionosphere is caused by the appearance of ionization process. At night, these are precipitations of electron fluxes. An analysis of the geophysical conditions during precipitation of electrons into the atmosphere in autumn 2017 and winter 2021–2022 is presented. Variations in the geomagnetic field components for 23.09.2017 are studied using the data from Russian Far Eastern and Alaskan observatories. During the quiet diurnal variation of the magnetic field (MF), two anomalies are detected — in the early morning and then in the daytime UTC. It is shown that the epicenter of the anomalies is located in Alaska. The variation features in the horizontal and eastern components of the Alaska MF make it possible to define the location of the epicenters of the anomalies. During the first anomaly, the epicenter was located north of all the observatories and west of the easternmost one. During the second anomaly, it was located south of all the observatories and east of the westernmost one. The assumption is substantiated that magnetic field variations and electron precipitation could occur as a result of experiments on ionospheric heating.
Keywords: atmosphere, mesosphere, ionosphere, particle precipitation, lidar
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