Ionosphere variability II: Advances in theory and modeling

I Tsagouri, DR Themens, A Belehaki, JS Shim… - Advances in Space …, 2023‏ - Elsevier
This paper aims to provide an overview on recent advances in ionospheric modeling
capabilities, with the emphasis in the efforts relevant to electron density variability. The …

Forecasting ionospheric foF2 using bidirectional LSTM and attention mechanism

J Tang, D Yang, M Ding - Space weather, 2023‏ - Wiley Online Library
The critical frequency of ionospheric F2 layer (foF2) is an important ionospheric
characteristic parameter. In this paper, a deep learning model based on Bidirectional long …

A prediction model of short-term ionospheric foF2 based on AdaBoost

X Zhao, B Ning, L Liu, G Song - Advances in Space Research, 2014‏ - Elsevier
In this paper, the AdaBoost-BP algorithm is used to construct a new model to predict the
critical frequency of the ionospheric F2-layer (foF2) one hour ahead. Different indices were …

Assessment of global ionospheric maps performance by means of ionosonde data

GO Jerez, M Hernández-Pajares, FS Prol, DBM Alves… - Remote Sensing, 2020‏ - mdpi.com
This work presents a new method for assessing global ionospheric maps (GIM) using
ionosonde data. The method is based on the critical frequency at the F2 layer directly …

Modeling ionospheric foF2 response during geomagnetic storms using neural network and linear regression techniques

M Tshisaphungo, JB Habarulema… - Advances in Space …, 2018‏ - Elsevier
In this paper, the modeling of the ionospheric foF 2 changes during geomagnetic storms by
means of neural network (NN) and linear regression (LR) techniques is presented. The …

A Comparison of IRI-2016 foF2 Predictions with the Observations at Different Latitudes During Geomagnetic Storms

E Timoçin, İ Ünal, ÜD Göker - Geomagnetism and Aeronomy, 2018‏ - Springer
This study investigates the impacts of geomagnetic storms on the performance of the
International Reference Ionosphere 2016 (IRI-2016) foF 2 predictions at different latitudes …

Investigation into the linear relationship between the AE, Dst and ap indices during different magnetic and solar activity conditions

BO Adebesin - Acta Geodaetica et Geophysica, 2016‏ - Springer
There are numerous geomagnetic indices used in monitoring various magnetospheric and
ionospheric phenomena. Some of the most widely used indices are the ap, AE and Dst. In …

[HTML][HTML] Impact of ICME-and SIR/CIR-Driven Geomagnetic Storms on the Ionosphere over Hungary

KA Berényi, A Opitz, Z Dálya, Á Kis, V Barta - Atmosphere, 2023‏ - mdpi.com
We investigate the differences between the effects of geomagnetic storms due to
Interplanetary Coronal Mass Ejections (ICME) and due to Stream Interaction Regions or …

An empirical model for the ionospheric global electron content storm-time response

S Li, R Galas, D Ewert, J Peng - Acta Geophysica, 2016‏ - Springer
By analyzing the variations of global electron content (GEC) during geomagnetic storm
events, the ratio “GEC/GECQT” is found to be closely correlated with geomagnetic Kp index …

Mid-Latitude Daytime F2-Layer Disturbance Mechanism under Extremely Low Solar and Geomagnetic Activity in 2008–2009

AV Mikhailov, L Perrone, AA Nusinov - Remote Sensing, 2021‏ - mdpi.com
European near-noontime ionosonde observations were considered during the period of
deep solar minimum in 2008–2009 to analyze foF2 perturbations not related to solar and …