The Earth's thermosphere and ionosphere (TI) are characterized by perpetual variability as
integral parts of the atmosphere system, with intermittent disturbances from solar and …

We review measurements of nighttime atmospheric/ionospheric waves in the upper
atmosphere in Japan, Indonesia, and Australia, using all-sky airglow imagers of optical …

The nighttime traveling ionospheric disturbances (TIDs) and the F-region 3-m scale field-
aligned irregularities were simultaneously observed with the MU radar and GEONET, a GPS …

Using airglow images of the near‐infrared OH band (720–910 nm) and OI (557.7 nm) line,
we investigated seasonal, latitudinal, and local time variations of short‐period gravity waves …

All‐sky imaging observations of distinct, large horizontal transient mesospheric structures
with a spatial scale of∼ 100 km detected in images of broadband OH and OI 557.7 nm …

In this paper, we examine the lidar observations of middle atmospheric temperature and E
and radar observations of F region FAI from Gadanki to investigate the gravity wave seeding …

We present observational evidence of gravity wave ducting and show, for the first time, that
the ducting occurs over large horizontal distances in the mesopause region. An optical …

The present study investigates the longitudinal variability of equatorial electrojet (EEJ) and
counter electrojet (CEJ) phenomena using concurrent data from three equatorial and low …

This paper presents a 7 year climatology describing medium‐scale gravity waves observed
in the menopause region covering the years from 1995 to 2001. The data comes from the OI …

With the development of cooled CCD detector, it has become possible to detect the spatial
and temporal variation of the small-scale structure in airglow emission more accurately …