The 2015 St. Patrick's day storm was the first storm of solar cycle 24 to reach a level of
“Severe” on the NOAA geomagnetic storm scale. The Norwegian Mapping Authority is …

The Rate Of TEC Index (ROTI) is a commonly used measure of ionospheric activity. ROTI
values have been computed every 5 min for the year 2012, for 10 receivers at latitudes from …

This paper presents a characterization of L‐band ionospheric scintillation observed at a
single site in the Arctic auroral zone, and an analysis of GPS‐based point positioning error …

The occurrence of ionospheric irregularities at high latitudes, with dimensions of several kms
down to decameter scale size shows strong correlation with geomagnetic disturbance …

At high latitudes, above 60° N, in the vicinity of the auroral oval, the ionosphere frequently
experiences disturbed conditions that impact GNSS-based services. The Norwegian …

The amplitude and phase of L-band satellite signals are fluctuated randomly due to small
scale electron density irregularity structures in the ionosphere which result in fleeting …

The interval of geomagnetic storms of 7–17 March 2012 was selected at the Climate and
Weather of the Sun-Earth System (CAWSES) II Workshop for group study of space weather …

This paper presents the effects of a weak geomagnetic storm event on 17 January 2013.
While the Kp index reached a maximum of only 4, this event still caused severe disturbances …

Abstract The Global Positioning System (GPS) performance at high latitudes can be severely
affected by the ionospheric scintillation due to the presence of small‐scale time‐varying …

Ionospheric scintillation occurs for transionospheric radio waves propagating through
random ionospheric irregularities, which affect the phase and/or amplitude observations …