Space weather prediction is a central focus of solar-terrestrial studies, with forecasts of
geomagnetic storms deemed critical due to their significant practical implications. We have …

This paper presents a deep and comprehensive multi-instrumental analysis of two distinct
ionospheric storms occurring in March and April 2023. We investigate the ionospheric …

Variations in X-ray and extreme ultraviolet (EUV) irradiance during solar flares lead to a
noticeable increase in the electron concentration in the illuminated part of the Earth's …

The effects of solar flares in the D-region ionosphere at two high-latitude stations: Maitri
(70.75° S, 11.75° E) and Abisko (68.4° N, 18.9° E), located in different hemispheres are …

This work investigates the impact of C-class solar flare events (XRA) on ionospheric and low-
frequency signal propagation by analyzing the maximum correlation lag time, correlation …

Positioning, navigation and time are the cornerstones of satellite navigation. These aspects
are frequently affected by ionospheric variations caused by solar flares (SF). In this study, we …

A novel method was developed based on the amplitude data of the EM waves measured by
Digisondes to calculate and investigate the relative ionospheric absorption changes. The …