Tinted detail of a photo: Fisheye view of bright green aurora bands swirling across a starry night sky above a snowy curved horizon, with a small lit building at the right edge.
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Solar-Terrestrial Sciences
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Heba S. Mohamed

Unraveling Low-Latitude Ionospheric Delays: How Solar Flux and Energetic Protons Shape Storm-Time TEC Across Solar Cycles 23–25

Two scatter plots showing a positive correlation between DTEC and F10.7 Flux. Blue data points with vertical error bars follow an upward-sloping red trend line in both graphs.

Introduction Geomagnetic storms present a constant challenge to global navigation satellite systems (GNSS), driving space weather researchers to better understand how the ionosphere responds when solar drivers strike. A primary key to this puzzle is ionospheric delay time, the exact duration between the onset of a geomagnetic storm and its peak impact on the Total …[Read More]