| Full text | |
| Author(s): |
Takahashi, Hisao
;
Figueiredo, Cosme A. O. B.
;
Essien, Patrick
;
Wrasse, Cristiano M.
;
Barros, Diego
;
Nyassor, Prosper K.
;
Paulino, Igo
;
Egito, Fabio
;
Rosa, Geangelo M.
;
Sampaio, Antonio H. R.
Total Authors: 10
|
| Document type: | Journal article |
| Source: | Annales Geophysicae; v. 40, n. 6, p. 8-pg., 2022-12-01. |
| Abstract | |
We observed a gravity wave (GW) signature in the OH emission layer in the upper mesosphere, and 4 h later, a medium-scale travelling ionospheric disturbance (MSTID) in the OI 630 nm emission layer. Spectral analysis of the two waves showed that both have almost the same wave characteristics: wavelength, period, phase speed and propagation direction, respectively, 200 km, 60 min, 50 m s-1, toward the southeast. From the gravity wave ray-tracing simulation for the mesospheric gravity wave, we found that the wave came from a tropospheric deep convection spot and propagated up to the 140 km altitude. Regarding the same wave characteristics between mesospheric GW and ionospheric MSTID, the two possible cases are investigated: a direct influence of the GW oscillation in the OI 630 nm emission height and the generation of a secondary wave during the GW breaking process. This is the first time to report an observational event of gravity wave propagation from the troposphere, mesosphere to thermosphere-ionosphere in the South American region. (AU) | |
| FAPESP's process: | 18/09066-8 - TRAVELLING IONOSPHERIC DISTURBANCES OBSERVED BY DETRENDED TOTAL ELECTRON CONTENT MAPS/KEOGRAM OVER ANDES MOUNTAINS |
| Grantee: | Cosme Alexandre Oliveira Barros Figueiredo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/22548-4 - Sources of traveling ionospheric disturbances over the Andes mountains |
| Grantee: | Cosme Alexandre Oliveira Barros Figueiredo |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |