Guest editors: Dieter Bilitza, Joseph Olwendo, Alessio Pignalberi, Michael Pezzopane

Published: 2026-05-04

SPECIAL ISSUE: IRI - Improving a global standard

Preface on the Special Issue “International Reference Ionosphere: Improvement and Evaluation of a Global Standard"

Dieter Bilitza, Joseph Olwendo, Alessio Pignalberi, Michael Pezzopane

P214

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Evaluating Ionospheric TEC Predictions: A Comparative Analysis between IRI-2016 and IRI-2020 Models Over Indian Equatorial and EIA Regions During 2016-2018

Mukulika Mondal, Mini Rajput, Jitesh Barman, Abhay Kumar Singh

SA215

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Study of the F‑region topside in situ ionospheric density using COSMIC‑2/ICON satellite observations and comparison with the IRI‑2020 model predictions

Awuor Adero, Solomon Otoo Lomotey, Hellen Babirekere, Vladimir Truhlik, Daniel Okoh, Abu Elezz Ola, John Bosco Habarulema, Ebenezer Agyei-Yeboah, Paul Baki, George Ochieng, Geovian Stower

SA216

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GNSS Receiver Bias Model for Near Real Time TEC Monitoring at Low Latitude, Thailand

Prasert Kenpankho, Samatchaya Maichuen, Prarinya Phothila, Jianfeng Zhang, Thanapon Keokhumcheng, Sontaya Ruttanaburee, Patinya Pornsopin

SA217

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Total Electron Content Fluctuations and Their Implications for GPS Signal Delay over Thailand: Insights from Low Latitudes during the Ascending Phase of Solar Cycle 25

Thanapon Keokhumcheng, Prarinya Phothila, Samatchaya Maichuen, Nitipat Buakao, Jianfeng Zhang, Prasert Kenpankho

SA218

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Comparison of Sporadic-E Characteristics from coincident COSMIC-2 Radio Occultation and Digisonde Observations

Mefe Moses, Haris Haralambous, Wilberforce Muniafu, Mostafa Hegy, Nahum Maundu, Francis Kisembo

SA219

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State‑of‑the‑Art Computerized Ionospheric Tomography over Africa and Türkiye

Sinem Deniz Yenen, Feza Arikan, Orhan Arikan

SA220

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Ionospheric foF2 Prediction Using an Interpretable XGBoost Model and COSMIC‑1 and 2 Radio Occultation Data

Fen Wang, Ming Ou, QingLin Zhu, JingJing Li, Qiang Zhang, YuHang Zhang, LongJiang Chen, XiaoRui Chong

SA221

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Reproducing the Ionosphere Climatology with Different 2D Models

Tamara Gulyaeva, Valentin Shubin

SA222

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Synthesizing Virtual and Real‑Height Ionograms using IONOLAB‑RAY

Esra Erdem Kocak, Feza Arikan

SA223

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Low-Latitude Ionospheric Responses to Two Matched Intense Equinoctial Geomagnetic Storms: A Case-Based Comparison Between Solar Cycles 24 and 25

Chollada Pansong, Prasert Kenpankho

SA224

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Large-scale irregularities in the high-latitude F region ionosphere represented by a numerical model, and comparison with Swarm observations

Renata Lukyanova

SA225

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Performance evaluation of Neural Network Modelfor different geomagnetic indices forecastingin Solar Cycle 25

Mostafa Hegy, Romisaa Abdelrahman

SA226

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