Ionospheric Event 2021-03-01

Contact: iono@gnss.be

SUMMARY OF THE EVENT: Following the Coronal Mass Ejection of the 28th February, an increase of the ionospheric total electron content (TEC) was observed above the southern part of Europe the 1st march 2021. This increase of TEC was greater than +15 TECu (+125%) with respect to the TEC of a quiet day around the peak at 09:00 UTC. It lasted from 8:00 to 16:00 UTC.

VTEC Time Series

Figure 1: VTEC Time Series

VTEC point locations

Figure 2: VTEC extracting locations


Figure 1 shows the time evolution of the Vertical Total Electron Content (VTEC) (in red) extracted from the near-real time VTEC maps at 3 different latitudes (Figure 2): a) Northern part (top), b) Brussels (middle) and c) Southern part (bottom). Also shown, the model based on the median from the 15 previous days (in grey).

About this event, see also:

  • VTEC maps during this event: here
  • Comparisons with the median of the last 15 days: here
  • about the origin of the ionospheric disturbances: www.sidc.be