Methodology of the lower ionosphere models verification based on VLF radio wave propagation during x-ray flares

S. Z. Bekker; I. A. Ryakhovsky

doi:10.1117/12.2574613

12 November 2020 Methodology of the lower ionosphere models verification based on VLF radio wave propagation during x-ray flares

S. Z. Bekker, I. A. Ryakhovsky

Author Affiliations +

Proceedings Volume 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 115607T (2020) https://doi.org/10.1117/12.2574613
Event: 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2020, Moscow, Russian Federation

Abstract

The paper is devoted to the verification method of results of the lower ionosphere models during solar flares. The verification is based on radio physical measurements of VLF signals. Radio wave amplitude values are normalized according to the difference between experimental and theoretical results, obtained during the calm heliogeophysical day, which is followed by the observed solar flares. This method allows to compare absolute values of radiophysical characteristics without knowing transmitter power. Such an approach makes it possible to evaluate the predictive capabilities of the ionosphere model during flares not only qualitatively, but also quantitatively. As a result of the D-region model verification, it was found that the standard deviation of the difference between experimental and theoretical amplitude of VLF signal is less than 1 dB in ~ 80% of cases

Citation Download Citation

S. Z. Bekker and I. A. Ryakhovsky "Methodology of the lower ionosphere models verification based on VLF radio wave propagation during x-ray flares", Proc. SPIE 11560, 26th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 115607T (12 November 2020); https://doi.org/10.1117/12.2574613

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