Estimation of ionospheric disturbances caused by meteorological processes in the troposphere

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Resumo

Gravity waves (GWs) are one of the triggers of ionospheric disturbances that can influence ionospheric propagation of radio waves and the work of radio-technical systems. The paper considers the actual problem of estimating the response of the F2-layer of the ionosphere to the propagation of GWs from the meteorological storm region in the troposphere. The study is carried out by the numerical modeling method based on the solution of the ionospheric plasma diffusion equation taking into account the perturbation of the nEᵤtral wind under the GWs action. The amplitude of the perturbation was set based on numerical calculations of the physical model of the GSM TIP with inclusion of a realistic GWs source. The numerical estimates showed that the nEᵤtral wind perturbations in the thermosphere with a period of several hours lead to a significant decrease of the electron density and an increase of the maximum height of the F2-layer under geomagnetically quiet conditions.

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Sobre autores

O. Borchevkina

Kaliningrad Branch of the Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences

Autor responsável pela correspondência
Email: olga.borchevkina@mail.ru
Rússia, Kaliningrad

I. Nosikov

Kaliningrad Branch of the Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences

Email: olga.borchevkina@mail.ru
Rússia, Kaliningrad

I. Karpov

Kaliningrad Branch of the Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian Academy of Sciences

Email: olga.borchevkina@mail.ru
Rússia, Kaliningrad

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2. Fig. 1. Change in the meridional wind according to the physical model GSM TIP (dashed line) and the harmonic disturbance model used in this work (solid line).

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3. Fig. 2. Electron density profile according to the IRI model (1) for 00.00 UT on 24.10.2018 over Kaliningrad (54° N, 20° E) and the results of numerical modeling of the ionospheric F-region profile according to expression (5) without taking into account disturbance (2).

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4. Fig. 3. Electron concentration profiles according to the analytical solution (5) at time moments: 0 (1), 1 (2), 2 (3), 3 h (4) after the start of the disturbance.

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5. Fig. 4. Change in electron density at an altitude of 290 km under the influence of meridional wind disturbance.

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