Abstract

The generation and development of ionospheric irregularities is an important topic of study in space weather, particularly due to their adverse effects on navigation positioning systems and trans-ionospheric communications. To improve our prediction capabilities, a comprehensive understanding of their variability during different geomagnetic conditions is important. The purpose of this research is to analyze the inhibition of post-sunset plasma bubbles over South America during geomagnetic storms. To conduct the analysis, we used the moving standard deviation (std), to characterize the occurrence of ionospheric irregularities in ICON IVM ion density data, std ⩾10000 indicates the presence of irregularities. We also used the peak electron density (NMAX) from GOLD night disk scan measurements to identify bubbles. Additionally, we consider ICON MIGHTI wind data (red line emission) to study the role of the neutral wind. We examine the presence of irregularities during three storms Abstract SA53A-2526