Ionospheric chaos in the solar quiet current due to sudden stratospheric warming events across the European and African sectors

Oludehinwa, Irewola Aaron; Velichko, Andrei; Olusola, Olasunkanmi Isaac; Bolaji, Olawale Segun; Marwan, Norbert; Ogunsua, Babalola Olasupo; Njah, Abdullahi Ndzi; Ologun, Timothy Oluwaseyi

doi:https://doi.org/10.5194/npg-32-225-2025

Articles | Volume 32, issue 3

https://doi.org/10.5194/npg-32-225-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/npg-32-225-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 32, issue 3

Research article

|

14 Jul 2025

Research article |

| 14 Jul 2025

Ionospheric chaos in the solar quiet current due to sudden stratospheric warming events across the European and African sectors

Irewola Aaron Oludehinwa, Andrei Velichko, Olasunkanmi Isaac Olusola, Olawale Segun Bolaji, Norbert Marwan, Babalola Olasupo Ogunsua, Abdullahi Ndzi Njah, and Timothy Oluwaseyi Ologun

Data sets

OMNIWeb Data Explorer NASA https://omniweb.gsfc.nasa.gov/form/dx1.html

Kp Index - Kp-Index GFZ https://kp.gfz.de/en/data#c222

International Real-time Magnetic Observatory Network Intermagnet https://imag-data.bgs.ac.uk/GIN_V1/GINForms2

Climate Plotting and Analysis Tools: NOAA Physical Sciences Laboratory NOAA https://psl.noaa.gov/data/composites/day/

Short summary

The contributing influence of SSWs (sudden stratospheric warming) on regional ionosphere through chaos theory is examined. We find that ionospheric chaos is more pronounced in the European sector compared to the African sector during an SSW. Evidence of orderliness behavior in regional ionosphere of African sector is observed. Finally, we notice that after the peak phase of an SSW, ionospheric chaos is found to be more pronounced.