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- W4387167448 abstract "In this paper, we evaluate and report the International Reference Ionosphere (IRI) model's vertical Total Electron Content (TEC) regional profile. Diurnal, monthly, seasonal, and storm-time characteristics of IRI estimates over the equatorial region's ionosphere are validated. We compared the vertical TEC derived from IRI-2020 and its predecessor, IRI-2016, with the GPS-TEC measurements. Results show that IRI (both versions) agrees with observed TEC during solar cycle maximum periods. Exceptionally, over Turkwel station, IRI-2020 produced double peak profiles on the March equinox, June solstice, and September equinox and overestimated with larger discrepancies. Over the other three stations, both IRI versions reproduced the seasonal averaged observed TEC with only slight time lags and discrepancies. During geomagnetically perturbed times, IRI-2020 better indicated positively enhanced GPS-TEC than IRI-2016. However, during the March 17, 2015 storm, IRI-2020 underestimated the storm-enhanced TEC over Bahir Dar station at all phases of the storm. IRI-2016 shows good performances for negative storms where lower TEC measurements are recorded." @default.
- W4387167448 created "2023-09-30" @default.
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- W4387167448 date "2023-09-01" @default.
- W4387167448 modified "2023-10-11" @default.
- W4387167448 title "Performance Evaluation for Vertical TEC Predictions over the East Africa and South America: IRI-2016 and IRI-2020 versions" @default.
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- W4387167448 doi "https://doi.org/10.1016/j.asr.2023.09.055" @default.
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