Aeronomic and Dynamic Correction of the Global Model GTEC
for Disturbed Conditions

V. N. Shubin; Шубин В. Н.; T. L. Gulyaeva; Гуляева Т. Л.; M. G. Deminov; Деминов М. Г.

doi:10.31857/S0016794022600491

Aeronomic and Dynamic Correction of the Global Model GTEC for Disturbed Conditions

Authors: Shubin V.N.¹, Gulyaeva T.L.¹, Deminov M.G.¹
Affiliations:
1. Institute of Terrestrial Magnetism, the Ionosphere, and Radio Wave Propagation
Issue: Vol 63, No 1 (2023)
Pages: 80-93
Section: Articles
URL: https://ruspoj.com/0016-7940/article/view/651041
DOI: https://doi.org/10.31857/S0016794022600491
EDN: https://elibrary.ru/ADCXDC
ID: 651041

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Abstract
About the authors
References
Supplementary files
Statistics

Abstract

An aeronomic and dynamic correction of the GTEC median global model of the total electron
content for disturbed conditions (Ap ≥ 15 nT) is proposed. The GTEC global median model is developed
for quiet conditions (Ap < 15 nT) as a function of the geographic coordinates, universal time UT, day of the
year, and solar activity level (the solar radio emission flux F10.7). The model is based on a spherical harmonic
analysis of the GIM-TEC Global Ionospheric Maps (1996–2019) provided by the Jet Propulsion
Laboratory (NASA). The proposed GDMTEC global dynamic model (Global Dynamic Model of TEC)
consists of the GTEC median model updated with several dynamic and aeronomic corrections related to
formation of the main ionospheric trough, position of the auroral ionization maximum and changes of the
thermospheric temperature and composition. The advantage of the proposed corrections of the median
model is the independence of forecast of the data in real time from assimilation of the current observational
data. Testing of the model for disturbed conditions shows an improvement of the forecast compared to the
IRI-Plas ionospheric reference model

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