International Research Journal of Innovations in Engineering and Technology - IRJIET International Open Access, Monthly, Peer Reviewed, Reputed Journal ISSN (online): 2581-3048

Impact Factor (2025): 6.9

DOI Prefix: 10.47001/IRJIET

Observed Discrepancies in International Reference Ionosphere Model Predictions at a Nigerian Low - Latitude Station

Abstract

IRI–2016 and GPS derived Total Electron Content (TEC) has been analyzed for comparative results. Day–to–day, monthly, seasonal and annual variations of TEC were observed, with IRI prediction values consistently higher than the GPS measured TEC values at all segments, especially during the day time plateau and decay region. The relative deviation of measured TEC from the modeled TEC showed appreciable difference, about 70% in most cases. IRI–2016 therefore, over–estimates GPS–derived TEC in Lagos low–latitude station. Investigation of TEC variation with geomagnetic storms revealed that IRI predicted GPS measurement better during storms.

Country : Nigeria

1 Lilian G. Olatunbosun2 Ayomide O. Olabode3 Emmanuel A. Ariyibi

  1. Department of Science Laboratory Technology, The Federal Polytechnic, Ado–Ekiti, Nigeria
  2. Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile–Ife, Nigeria
  3. Department of Physics and Engineering Physics, Obafemi Awolowo University, Ile–Ife, Nigeria

IRJIET, Volume 3, Issue 4, April 2019 pp. 32-39

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