Pattern of the variation of the TEC extracted from the GPS, IRI 2016, IRI-Plas 2017 and NeQuick 2 over polar region, Antarctica.

As a result of the complex and typical behavior of the earth's magnetic field, the high latitude ionospheric parameters (such as the Vertical Total Electron Content, VTEC) are very dynamic. Thus, this study mainly focuses on the pattern of variation of the VTEC inferred from the GPS, IRI 2016, IRI-Plas 2017 and NeQuick 2 with different height over Antarctica during 2011-2017. It has been shown that the GPS-derived (GPS VTEC) and modelled (IRI 2016, IRI-Plas 2017 and NeQuick 2) VTEC do not show significant variations in the hourly values.