TEC derived from some GPS stations in Nigeria and comparison with the IRI and NeQuick models |
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| Authors: | AB Rabiu AO Adewale RB Abdulrahim EO Oyeyemi |
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| Institution: | 1. National Space Research and Development Agency (NASRDA), Abuja, Nigeria;2. Space Physics Laboratory, Federal University of Technology, Akure, Nigeria;3. University of Lagos, Lagos, Nigeria;4. Centre for Satellite Technology, NASRDA, Abuja, Nigeria |
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| Abstract: | Total electron content (TEC) measured simultaneously using Global Positioning System (GPS) ionospheric monitors installed at some locations in Nigeria during the year 2011 (Rz = 55.7) was used to study the diurnal, seasonal, and annual TEC variations. The TEC exhibits daytime maximum, seasonal variation and semiannual variations. Measured TEC were compared with those predicted by the improved versions of the International Reference Ionosphere (IRI) and NeQuick models. The models followed the diurnal and seasonal variation patterns of the observed values of TEC. However, IRI model produced better estimates of TEC than NeQuick at all locations. |
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| Keywords: | Ionosphere GPS Total electron content IRI NeQuick |
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