Ionospheric Event 2012-03-16


SUMMARY OF THE EVENT: A Solar CME was detected by ACE the 15/03/2012 at 12:40UTC, linked to the solar flare from the 13/03/2012 (source: As a consequence, the Earth's ionosphere above Europe was disturbed during :

(1) 15/03/2012 from 17:00UTC to 22:00UTC
(2) 16/03/2012 from 7:00UTC to 19:00UTC where the Vertical Total Electron Content (VTEC) of the ionosphere was very low with respect to the 15 previous days.

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