The morphology and physical interpretations of the longitudinal variations in the ionospheric plasma density at low-, mid- and high-latitudes
Abstract
As it is well known the longitudinal variations in the ionospheric electron density at equatorial, low-, mid- and high-latitudes have a number of similarities and differences. The data obtained from topside ionospheric sounding, GPS-LEO radio occultation method, worldwide network of ground-based ionosondes and GPS receivers were previously used for investigations of the various kinds of manifestations of the longitudinal ionospheric variability. We discuss and present the brief review of the recent advances and outstanding problems in this important scientific issue. We paid a special attention into our understanding of local time, seasonal, geomagnetic and solar activity dependence of the longitudinal variations in the ionospheric F region parameters. Another main objective of our report is to describe the theoretical understanding and recent model finding of the main formation mechanisms of ionospheric longitudinal variations using the Global Self-consistent Model of the Thermosphere, Ionosphere and Protonosphere (GSM TIP). We compared the GSM TIP model results with IRI empirical model, and different observation data (Intercosmos-19 satellite, DPS-4 ionosondes, GPS TEC and COSMIC ionospheric electron content). This work was supported by RFBR Grants No.14-05-00788, No.14-05-00578, and Program 22 RAS.
- Publication:
-
40th COSPAR Scientific Assembly
- Pub Date:
- 2014
- Bibcode:
- 2014cosp...40E1519K