Ionospheric Event 2012-09-01


SUMMARY OF THE EVENT: A major increase of Total Electron Content (TEC) (+15 TECu) in the ionosphere above Europe was observed on 1st of September 2012. A possible explanation might be the extreme UV pulses from the flares which have illuminated Earth's upper atmosphere, causing waves of ionization on the 31st of August 2012 (source:

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