Seasonal variations of storm-time TEC at European middle latitudes

Details Seasonal variations of storm-time TEC at European middle latitudes Seasonal variations of storm-time TEC at European middle latitudes

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010adspr..46.1318s&link_type=abstract

Advances in Space Research, Volume 46, Issue 10, p. 1318-1325.

Physics

2

Scientific paper

Global Navigation Satellite System (GNSS) measurements of the Total Electron Content (TEC) from local (Dourbes, 50.1°N, 04.6°E) and European IGS (International GNSS Service) stations were used to obtain the TEC changes during the geomagnetic storms of the latest solar activity cycle. A common epoch analysis, with respect to geomagnetic storm intensity, season, and latitude, was performed on data representing nearly 300 storm events. In general, the storm-time behaviour of TEC shows clear positive and negative phases, relative to the non-storm (median) behaviour, with amplitudes that tend to increase during more intense storms. The most pronounced positive phase is observed during winter, while the strongest and yet shortest negative phase is detected during equinox. Average storm-time patterns in the TEC behaviour are deduced for potential use in ionosphere prediction services.

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