This review summarizes some of the recent results on the disturbed upper atmosphere
obtained by satellite‐borne gas analyzers. According to these measurements …

Composition and temperature data from satellite measurements and from radar backscatter
observations show that dynamics is a major key in our understanding of the upper …

The upper atmosphere constitutes the outer region of the terrestrial gas envelope above
about 100 km altitude. The energy budget of this outer gas layer is partly controlled by the …

The compositional response of the neutral thermosphere to an impulsive geomagnetic storm
has been investigated using a numerical simulation made with the National Center for …

A new theoretical model for mid-latitude mesosphere and lower thermosphere at equinox
conditions has been developed by including new values of various characteristic …

The dissipation of solar wind energy in the Earth's upper atmosphere remains one of the
most challenging topics in thermospheric physics. Not only does this energy transfer have a …

The N2/O density ratio as measured by the Esro 4 satellite is used to investigate seasonal
changes in the latitudinal structure of nine disturbance events. A comparison of summer and …

The ionosphere of the Earth has been actively studied since the 1920's, following the
discovery of ground radio-sounding. By means of this method results were ohtained by an …

A considerable amount of previous work has been carried out to investigate variations in
thermospheric composition that occur in response to the onset and main phase of …

This study investigates seasonal changes in the morphology of atmospheric‐ionospheric
disturbances. They are inferred from variations in the global distribution of negative storm …