Physics
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.2165e&link_type=abstract
Journal of Geophysical Research, vol. 85, May 1, 1980, p. 2165-2170.
Physics
1
Atomic Spectra, Equatorial Atmosphere, Nitrogen Atoms, Thermosphere, Annual Variations, Diurnal Variations, Mass Spectroscopy, Night Sky, Nocturnal Variations, Satellite Observation
Scientific paper
The open source neutral mass spectrometer on board the equatorial Atmosphere Explorer E satellite (AE-E) measured atomic nitrogen densities at frequent intervals during both the elliptical and circular orbit phases of satellite operations. Elliptical orbit data presented here by means of empirical models at 225- and 300-km altitude provide diurnal and seasonal profiles at altitudes lower than previously possible. Data from individual circular orbits later in the AE-E mission confirm essential features of these models, particularly the diurnal density profile. At lower altitudes, considerable variation is evident near midnight, with density enhancements correlated with increasing levels of geomagnetic activity.
Defreese J. A.
Engebretson Mark J.
Mauersberger Konrad
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