European Space Weather Week 2025

High Total Electron Content over Zambia during a space weather event of 23 Feb – 01 Apr 2023

Not scheduled

15m

Mon 27/10: Idun - Tue 28/10, Wed 29/10: Studion

Poster SWR4 - Interactions in the Earth’s Magnetosphere-Ionosphere-Thermosphere System and their Space Weather Impact SWR4 –Interactions in the Earth’s Magnetosphere-Ionosphere-Thermosphere System and their Space Weather Impact

Speaker

Tshimangadzo M. Matamba (South African National Space Agency (SANSA))

Description

Global navigation satellite systems (GNSS) are often used to provide positioning and timing for ground-based users. The low- and mid-latitude GNSS receivers are used to study periods where the Zambia GPS receiver observed high total electron content (TEC). To investigate the ionospheric changes, several receivers located in Namibia, Zambia, Kenya, and Uganda were utilised from 23 Feb to 1 Mar 2023. Occasionally, a high level of TEC is observed over Zambia as well as over Namibia on 24, 27 Feb and 1 Mar 2023. The high TEC values are found not to be dependent on geomagnetic activity. This presentation will highlight the periods of high TEC associated with the movement of the southern crest of the equatorial ionization anomaly to more southern locations as confirmed by electron density measurements from the Langmuir probe on the Swarm-C satellite.