New observations obtained by the satellite CHAMP reveal a detailed picture of the noon‐
time equatorial electrojet (EEJ). The low orbit of CHAMP and its high‐precision …

The first regional total electron content (TEC) model over the entire African region (known as
AfriTEC model) using empirical observations is developed and presented. Artificial neural …

The day‐to‐day variability of the equatorial ionization anomaly (EIA), especially the 2‐day
oscillation of the EIA, has recently been studied in China. We suggest that the main driving …

The diamagnetic effect generally reduces the magnetic field inside a plasma. Its importance
is appreciated in regions like the magnetosphere and the solar wind. In the ionosphere …

Using more than 350 ionospheric images reconstructed tomographically, studies on the
motion of the anomaly crest and its geophysical implications are carried out. On an average …

This paper investigates the features of pre-earthquake ionospheric anomalies in the total
electron content (TEC) data obtained on the basis of regular GPS observations from the …

Comprehensive behavior of the low-latitude upper atmosphere during sudden stratospheric
warming (SSW) events at varying levels of solar activity has been investigated. The …

On days that are quiet with respect to solar-terrestrial activity phenomena, the geomagnetic
field has variations, tens of gamma in size, with major spectral components at about 24, 12 …

The day-to-day variability in the occurrence of ionospheric scintillations, which are of serious
concern in the trans-ionospheric communications, makes their prediction still a challenging …

Ionospheric data observed in 30 stations located in 3 longitude sectors (East Asia/Australia
Sector, Europe/Africa Sector and America/East Pacific Ocean Sector) during 1974–1986 are …