Ionospheric Response to the Severe Geomagnetic Storm of 19–21 January 2026 over Almaty (Kazakhstan) According to the Digisonde and GPS Data
Highlights What are the main findings? We present initial operational results from observing the ionosphere during the severe geomagnetic storm of 19–21 January 2026, using the newly installed Digisonde Portable Sounder (DPS-4D) at the Almaty station (43.25° N, 76.92° E, Central Asia, Kazakhstan). A synergistic combina...