In recent times it has become increasingly clear that releases of trace gases from human
activity have a potential for causing change in the upper atmosphere. However, our …

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 …

The gravity wave (GW) characteristics over Maui from 2002 to 2007 are deduced from OH
airglow imager. The dominant horizontal wavelength falls between 15 and 30 km. Intrinsic …

To investigate gravity wave dynamics in the mesosphere and lower thermosphere (MLT)
region, we conducted coordinated observations of mesospheric gravity waves over Japan …

Measurements of dynamic parameters of atmospheric gravity waves, mainly the vertical
wavelength, the momentum flux and the momentum flux divergence, are affected by large …

The mesospheric OH layer varies on several timescales, primarily driven by variations in
atomic oxygen, temperature, density and transport (advection). Vibrationally excited OH …

A new stereoscopic measurement technique is developed to obtain an all-sky altitude map
of aurora using two ground-based digital single-lens reflex (DSLR) cameras. Two identical …

An all-sky CCD imager for OH, O 2 and OI (557.7 nm) airglow emission measurements was
operated at São João do Cariri (Cariri), Brazil (7° S, 36° W), from October 2000 to December …

SWIR imagers can operate at near room temperature with cut-off wavelengths that extended
from 1.7 μm (for InP lattice matched InGaAs) to beyond 2.0 μm with strained InGaAs epitaxial …