Characterizing the Longitudinal Dependence of Ionospheric Irregularities
Abstract
The development of ionospheric density irregularities can be initiated by one of the two major coupling processes, namely, (a) lower thermosphere-ionospheric coupling that involves upward propagating atmospheric waves (forcing from below) and (b) magnetosphere-ionosphere coupling that involves magnetospheric electric field penetration (forcing from above). Over the past decades significant progresses have been done to understand the physics of ionospheric irregularities that causes the rapid amplitude and phase fluctuations of radio signals that traverse through it. However, characterization of the global ionospheric irregularities as a function of local time, longitude, and magnetic activities is still a challenge for the modeling community. Recently quite a number of instruments have been deployed on the ground and on space at different altitudes to characterize the dynamic of ionosphere. In this paper, using multi-instruments - coordinated (in space and time) - observations onboard recently launched COSMIC-2, ICON, GOLD, and SWARM as well as ground-based GNSS and VHF receivers, we investigate the longitudinal dependence of ionospheric irregularity structures. Its temporal variability, at different longitudes, will also be monitored using VHF scintillation and GNSS ROTI observations by limited instruments located at different longitudes.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMSA0360005Y
- Keywords:
-
- 3369 Thermospheric dynamics;
- ATMOSPHERIC PROCESSES;
- 2411 Electric fields;
- IONOSPHERE;
- 7974 Solar effects;
- SPACE WEATHER