Using data collected by the GNSS dual-frequency receivers network, de-trended TEC maps
were generated to identify and characterize the medium-scale traveling ionospheric …

In this work, we have performed a study for the first time on the climatology of the
intermediate descending layers (ILs) over Brazilian equatorial and low-latitude regions …

Nighttime airglow images observed at the low‐latitude site of São João do Cariri (7.4° S,
36.5° W) showed the presence of a medium‐scale atmospheric gravity wave (AGW) …

Our paper presents the results of investigating wave structures detected in 630 nm atomic
oxygen emission intensity (airglow height is~ 180–300 km). The study employs data from a …

This paper presents the Intertropical Convergence Zone (ITCZ) as the possible source
mechanism of the medium-scale traveling ionospheric disturbances (MSTIDs) propagating …

Observations of concentric gravity waves (CGWs) in the OH airglow emission over the
Brazilian equatorial region are presented. An all‐sky imager installed at São João do Cariri …

Abstract In this study, OI 630.0 nm nightglow image data obtained from an all-sky imaging
station located at Sao Joao do Cariri (7.4° S, 36.5° W), have been used to study the …

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 thermal dynamics of the upper atmosphere, especially in the mesosphere, have been
improving our understanding about the effects of climate change, as well as how the …

Medium-scale gravity waves are atmospheric waves with a horizontal scale of 50 to 1000
km. They can be observed via airglow all-sky images through the keogram technique. Our …