Abstract
Solar activity is one of the most important factors determining the state of the nearest space, the main part of which is the ionosphere, which provides the conditions for the functioning of various technological systems. Before the start of cycle 25, there were predictions of its low solar activity and identity to cycle 24, but the behavior of the Sun indicates a departure from such a scenario. An example is March 2022. In a previous paper (Journal of Biomedical Research & Environmental Sciences, 2022), it was shown that a large short-term solar enhancement caused a global positive perturbation in the behavior of ionospheric parameters, especially the total electron content TEC, which has a large impact on positioning accuracy. This paper investigates whether such amplification is unique. The years 2022, 2011, and 2012 are chosen for this purpose. Latitude dependences of TEC for the Euro-African meridian (15° E) and longitude dependences of TEC for latitude 40° N are given. It is shown that this amplification is not unique, but a significant asymmetry of the two hemispheres is observed. The results obtained are consistent with observations by various authors in some regions of the globe.
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Acknowledgments
The author is grateful to the developers of websites: http://omniweb.gsfc.nasa.gov/form/dx1.html, ftp://cddis.gsfc.nasa.gov/pub/gps/products/ionex/. The research was financially supported by Southern Federal University, 2020 Project VnGr/2020–03-IF.
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Maltseva, O.A. (2022). Influence of Solar Activity on the Space Environment During the March Equinox. In: Shishkov, B., Lazarov, A. (eds) Telecommunications and Remote Sensing. ICTRS 2022. Communications in Computer and Information Science, vol 1730. Springer, Cham. https://doi.org/10.1007/978-3-031-23226-8_2
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