ABSTRACT
In this chapter, an attempt has been made to explain the different impacts of the near-Earth space environment system on the Antarctic sub-auroral upper atmosphere. The work addresses the scientific interest of high-latitudinal ionospheric consequences caused by the modulation of near-Earth space environmental conditions. For better understating, this chapter is divided into three parts based on different scientific investigations. The first part deals with the Earth’s geomagnetic perturbations due to the solar wind–magnetospheric coupling process. However, the second part explores the response of the sub-auroral high-latitude ionosphere to the geomagnetic disturbances. The third part explains the longitudinal ionospheric response of the Southern Hemispheric high-latitude region. This chapter elaborates that the cumulative effect of consecutive three sub-storms have been responsible for a significant increase in ring current, which triggered a moderate-type geomagnetic storm. Further, the consequences of such geomagnetic perturbations on sub-auroral as well as polar longitudinal ionospheric impact and associated phenomena have been described.
