Signature of gravity wave propagations from the troposphere to ionosphere
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Published:2022-12-01
Issue:6
Volume:40
Page:665-672
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ISSN:1432-0576
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Container-title:Annales Geophysicae
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language:en
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Short-container-title:Ann. Geophys.
Author:
Takahashi Hisao, Figueiredo Cosme A. O. B.ORCID, Essien PatrickORCID, Wrasse Cristiano M., Barros Diego, Nyassor Prosper K., Paulino IgoORCID, Egito Fabio, Rosa Geangelo M., Sampaio Antonio H. R.
Abstract
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.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
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