Combined model of topside ionosphere and plasmasphere derived from radio-occultation and Van Allen Probes data
- In the last years, electron density profile functions characterized by a linear dependence on the scale height showed good results when approximating the topside ionosphere. The performance above 800 km, however, is not yet well investigated.
This study investigates the capability of the semi-Epstein functions to represent electron density profiles from the peak height up to 20,000 km. Electron density observations recorded by the Van Allen Probes were used to resolve the scale height dependence in the plasmasphere.
It was found that the linear dependence of the scale height in the topside ionosphere cannot be directly used to extrapolate profiles above 800 km.
We find that the dependence of scale heights on altitude is quadratic in the plasmasphere. A statistical model of the scale heights is therefore proposed. After combining the topside ionosphere and plasmasphere by a unified model, we have obtained good estimations not only in the profile shapes, but also in the Total Electron Content magnitude and distributions whenIn the last years, electron density profile functions characterized by a linear dependence on the scale height showed good results when approximating the topside ionosphere. The performance above 800 km, however, is not yet well investigated.
This study investigates the capability of the semi-Epstein functions to represent electron density profiles from the peak height up to 20,000 km. Electron density observations recorded by the Van Allen Probes were used to resolve the scale height dependence in the plasmasphere.
It was found that the linear dependence of the scale height in the topside ionosphere cannot be directly used to extrapolate profiles above 800 km.
We find that the dependence of scale heights on altitude is quadratic in the plasmasphere. A statistical model of the scale heights is therefore proposed. After combining the topside ionosphere and plasmasphere by a unified model, we have obtained good estimations not only in the profile shapes, but also in the Total Electron Content magnitude and distributions when compared to actual measurements from 2013, 2014, 2016 and 2017.
Our investigation shows that Van Allen Probes can be merged to radio-occultation data to properly represent the upper ionosphere and plasmasphere by means of a semi-Epstein function.…
| Author details: | Fabricio S. Prol, Artem G. SmirnovORCiDGND, M. Mainul Hoque, Yuri Y. ShpritsORCiD |
|---|---|
| DOI: | https://doi.org/10.1038/s41598-022-13302-1 |
| ISSN: | 2045-2322 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35697752 |
| Title of parent work (English): | Scientific reports |
| Publisher: | Macmillan Publishers Limited, part of Springer Nature |
| Place of publishing: | London |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2022/06/13 |
| Publication year: | 2022 |
| Release date: | 2024/06/07 |
| Volume: | 12 |
| Issue: | 1 |
| Article number: | 9732 |
| Number of pages: | 11 |
| Funding institution: | International Space Science Institute (ISSI -Bern, Switzerland);; Deutsche Forschungsgemeinschaft (DFG) [HO 6136/1-1]; Helmholtz Pilot; projects Information & Data Science II (Initiative and Networking Fund; of the Hermann von Helmholtz-Association Deutscher Forschungszentren; e.V.) [ZT-I-0022]; INdoor navigation from CUBesAT Technology (INCUBATE); project, under the grant from the Technology Industries of Finland; Centennial Foundation; Jane and Aatos Erkko Foundation |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Peer review: | Referiert |
| Publishing method: | Open Access / Gold Open-Access |
| DOAJ gelistet | |
| License (German): |  CC-BY - Namensnennung 4.0 International |
