| Full text | |
| Author(s): |
Prol, Fabricio dos Santos
[1, 2]
;
Hernandez-Pajares, Manuel
[2]
;
Camargo, Paulo de Oliveira
[1]
;
de Assis Honorato Muella, Marcio Tadeu
[3]
Total Authors: 4
|
| Affiliation: | [1] Univ Estadual Paulista, UNESP, Sao Paulo - Brazil
[2] UPC, IonSAT, IEEC, CTE, CRAE, Barcelona - Spain
[3] Univ Vale Paraiba, UNIVAP, Lab Fis & Astron, IP&D, Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS; v. 123, n. 3, p. 2104-2115, MAR 2018. |
| Web of Science Citations: | 4 |
| Abstract | |
A new method for probing the spatial and temporal features of the topside ionosphere is presented. The Vary-Chap model given by linear functions was used to discover and report features of the topside scale height and its gradient. Based on the global coverage of the radio occultation data, spherical harmonic functions were applied to detect some spatial features of the estimated topside. In addition, a Fourier time-dependent method was applied in 10 consecutive years to both estimate and predict the temporal evolution of the topside. As a result, the temporal variation of the peak height showed high correlation with the scale height. And on the other hand, the electron density peak showed a strong anticorrelation with the gradient of the scale height. This suggests that the equatorial topside was mainly controlled by the E x B equatorial vertical drift, which increases the scale height in the equatorial region, and the diffusion of the electrons along the geomagnetic field lines, which reduces the gradient of the scale height. Also, a 1year prediction with a reasonable accuracy showed that the proposed model can be considered a practical and useful tool for predicting features of the topside ionosphere, which may have special interest for the development of climatological models. (AU) | |
| FAPESP's process: | 16/22011-2 - Data assimilation for three-dimensional modelling of the ionosphere in Brazil |
| Grantee: | Fabricio dos Santos Prol |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 15/15027-7 - Data assimilation for three-dimensional modelling of the ionosphere in Brazil |
| Grantee: | Fabricio dos Santos Prol |
| Support Opportunities: | Scholarships in Brazil - Doctorate |