Computer Science – Sound
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.7653b&link_type=abstract
Journal of Geophysical Research, vol. 87, Sept. 1, 1982, p. 7653-7665.
Computer Science
Sound
9
Atmospheric Chemistry, Ionospheric Composition, Oxygen Ions, Photochemical Reactions, Thermosphere, Altitude, Auger Effect, Data Reduction, Ionospheric Ion Density, Photoionization, Satellite Sounding
Scientific paper
An analysis is conducted for the Atmosphere Explorer C observations of O(++) in the daytime thermosphere which supercedes that of Breig et al (1977) and restricts attention to five orbits of data from the high-grain mode of the magnetic ion-mass spectrometer. The present investigation adopts a model for O(++) ionospheric chemistry which has been revised in light of recent laboratory measurements of a fast loss rate for O(++) through reaction with N2. An improved procedure is also introduced which analyzes the basic ion currents recorded by the magnetic ion-mass spectrometer and has special application for the very low concentrations near and below 200 km. It is found that large scale features in the low altitude data are best represented with an additive term which is proportional to the N2 or O2 density, with the preferred interpretation as a contaminant signal induced by neutral particles impinging on instrument or spacecraft surfaces.
Breig Edward L.
Kayser David C.
Torr Marsha R.
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