Preprints
https://doi.org/10.5194/angeo-2022-13
https://doi.org/10.5194/angeo-2022-13
 
06 May 2022
06 May 2022
Status: this preprint is currently under review for the journal ANGEO.

Signature of gravity wave propagations from the Troposphere to Ionosphere

Hisao Takahashi1, Cosme A. O. B. Figueiredo1, Patrick Essien2, Cristiano M. Wrasse1, Diego Barros1, Prosper K. Nyassor1, Igo Paulino3, Fabio Egito3, Geangelo M. Rosa4, and Antonio H. R. Sampaio4 Hisao Takahashi et al.
  • 1Space Weather Division, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, Brazil
  • 2University of Cape Coast, Department of Physics, Cape Coast, Ghana
  • 3Unidade acadêmica de Física, Universidade Federal de Campina Grande, Campina Grande, Brazil
  • 4Federal Institute for Education, Science and Technology Baiano (IF Baiano), Bom Jesus da Lapa, Brazil

Abstract. We observed a gravity wave (GW) signature in the OH emission layer in the upper mesosphere, and 4 hours later, a medium-scale traveling ionospheric disturbance (MSTID) in the OI 630 nm emission layer. Spectral analysis of the two waves did show that both have the same wave characteristics: wavelength, period, phase speed and propagation direction, respectively, 200 km, 60 min, 50 m/s, propagating southeastward. During the MSTID occurrence, concentric wavefronts were also observed in the ionosphere by detrended total electron content (dTEC) maps. 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 MSTID, 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. The concentric wave structure suggests the generation of a secondary wave after the primary wave was dissipated in the lower thermosphere. 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.

Hisao Takahashi et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on angeo-2022-13', Anonymous Referee #1, 14 Jun 2022
    • AC1: 'Reply on RC1', H. Takahashi, 10 Aug 2022
    • AC3: 'Reply on RC1', H. Takahashi, 10 Aug 2022
    • AC5: 'Reply on RC1', H. Takahashi, 10 Aug 2022
  • RC2: 'Comment on angeo-2022-13', Anonymous Referee #2, 14 Jun 2022
    • AC2: 'Reply on RC2', H. Takahashi, 10 Aug 2022
    • AC4: 'Reply on RC2', H. Takahashi, 10 Aug 2022

Hisao Takahashi et al.

Hisao Takahashi et al.

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Short summary
We observed three different wave structures in the earth’s upper atmosphere: a gravity wave in the mesosphere, the ionospheric disturbances, and the concentric wave structure in the ionosphere. We investigated these wave propagations by using airglow imaging and GNSS radio wave measurements. It is found that there was a gravity wave generation from the tropospheric convection spot. This is to report an observational evidence of gravity wave propagation from the troposphere to ionosphere.