| dc.description.abstract | This study investigates the diurnal and seasonal variations of the low latitude ionosphere
using COSMIC-2 radio occultation data in 2020-2021. By analyzing electron density
profles, intriguing patterns are revealed in the distributions of NmF2 and hmF2. During
the daytime, NmF2 displays two equatorial ionization anomaly (EIA) peaks gradually
separating from the magnetic equator, while hmF2 peaks remain confned to the magnetic
equator. NmF2 exhibits a daytime increase and subsequent decrease, while hmF2 shows
an abnormal rise around 20 LT. The seasonal analysis highlights the December solstice
as having the highest intensity of NmF2, indicating a dominant annual asymmetry in
the low-latitude ionosphere. Additionally, hemispheric asymmetry in hmF2 is observed
during solstices, attributed to wind convergence patterns. These fndings contribute to
our understanding of ionospheric behavior in the low latitude region and advance the
felds of space science. | en_US |
