Topside Plasma Scale Height Modelling Based on CHAMP Measurements: First Results
- 1k Downloads
Presented are first results in retrieving, analysing, and modelling the topside plasma scale height by using CHAMP ionospheric radio occultation observations. The plasma scale height value in the region situated immediately above the ionospheric F2-layer density peak, is very important for the TEC calculation and plasma density reconstruction procedures based on GPS radio occultation measurements. Based on the year-long time series data accumulated so far, obtained were latitudinal, diumal, and seasonal variations of the topside plasma scale height. Considering the growing CHAMP measurement data base, it is possible to develop a new empirical model to be used for improving the process of electron density profile retrieval by delivering an improved initial guess of the topside electron density profile.
Key wordsScale Height Occultation Method Empirical Modelling
Unable to display preview. Download preview PDF.
- Heise S, Jakowski N, Wehrenpfennig A, Reigber C, Lühr H (2002) Sounding of the topside ionosphere/plasmasphere based on GPS measurements from CHAMP: Initial results. Geophys Res Lett 29(14): doi 10.1029/2002GL014738.Google Scholar
- Jakowski N, Wehrenpfennig A, Heise S, Reigber C, Lühr H, Grunwaldt L, Meehan T (2002) GPS radio occultation measurements of the ionosphere from CHAMP: Early results. Geophys Res Lett 29(10): doi 10.1029/2001GL014364.Google Scholar
- Reigber C, Lühr H, Schwintzer P (Eds.) (2002) First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies. Springer-Verlag Berlin Heidelberg New York.Google Scholar