The disappearance of the crests corresponds to the negative ionospheric storm observed in the [DELTA]VTEC maps of Figure 5.
Finally, a localized TEC decrement (or negative ionospheric storm) was also identified.
Impact of thc Hallowceen 2003 ionospheric storm
on kinematic GPS positioning in Europe.
This period coincided with a severe ionospheric storm
caused by a "solar bullet" of charged particles emitted by the sun.
Wielgosz, P., Kashani, I., and Grejner-Brzezinska, D.A.: 2005, Analysis of long-range network RTK during severe ionospheric storm. Journal of Geodesy, 79, No.
and Lagovsky, A.F.: 2012, Observation of the ionospheric storm of October 11, 2008 using FORMOSAT-3/COSMIC data.
On explaining the local time variation of ionospheric storm
This is connected with creation of global model of ionospheric storms
and providing stable navigation in polar region.
There are no grooves, no words and no obvious framework: just an ominous, dynamic texture with occasional ionospheric storms
or a muffled scream.
The F1 layer exists only during the daytime and is more noticeable during the summer months, during periods of high sunspot activity and during ionospheric storms
. When utilizing the F1 layer for propagation of radio waves, it is necessary to increase frequency to extend the broadcast range.
Severe ionization fronts are often generated in the course of ionospheric storms which are driven by space weather conditions (Ho et al., 1996, Jakowski et al.
More systematic studies may reveal whether high-latitude TEC monitoring has the capability of forecasting performance degradation of GNSS networks due to ionospheric storms (Jakowski et al.